@prefix vivo: . @prefix edm: . @prefix ns0: . @prefix dcterms: . @prefix skos: . vivo:departmentOrSchool "Science, Faculty of"@en, "Zoology, Department of"@en ; edm:dataProvider "DSpace"@en ; ns0:degreeCampus "UBCV"@en ; dcterms:creator "Black, Edgar Clark"@en ; dcterms:issued "2011-10-31T19:34:39Z"@en, "1935"@en ; vivo:relatedDegree "Master of Arts - MA"@en ; ns0:degreeGrantor "University of British Columbia"@en ; dcterms:description "[No abstract available]"@en ; edm:aggregatedCHO "https://circle.library.ubc.ca/rest/handle/2429/38480?expand=metadata"@en ; skos:note "THE INCIDENCE OF BORING AND SESSILE ORGANISMS ON WOODEN STRUCTURES IN BRITISH COLUMBIA COASTAL WATERS EDGAR CLARK BLACK A Thesis submitted f o r the Degree of MASTER OF ARTS i n the Department of ZOOLOGY The U n i v e r s i t y of B r i t i s h Columbia August, 1935. CONTENTS INTRODUCTION REVIEW OF LITERATURE DISCUSSION OF SITES STUDIED GENERAL METHODS METHODS OF OBTAINING INFESTATION DATA METHODS OF OBTAINING PHYSICO-CHEMICAL DATA METHODS AND RESULTS BANKIA INFESTATION RESULTS William Head . . -Eequiraalt V i c t o r i a Departure bay Vancouver- ' Crescent .Prince Rupert Buckley bay Shannon bay LIMNORIA INFESTATION DATA William Head Esquinialt Victoria Beparture bay Vancouver Crescent Princ® Rupert Buc kley bay \\ l / Shannon bay INCIDENCE OF SESSILE ORGANISMS W i l l i a m Head Esquimalt V i c t o r i a Departure bay Vancouver Crescent P r i n c e Rupert Shannon bay page IV I 3 10 12 13 131 16 16 19 S0L 21 24 26 28 28 29 30 31 31 32 33 33 36 36 3? 38 41 42 43 44 TABLES OF RESULTS BANKIA AND LIMNORIA William Head Esquinalt Victoria Departure bay Vancouver Crescent Prince Rupert Buc kley bay Shannon bay 1931*1932 Shannon bay 1933-1934 HYDROGRAPHIC TABLES William Head Esquimalt Victoria Departure bay • Vancouver Crescent Prince Rupert-. Buciley bay Shannon bay 1931-1932 Shannon bay 1933-1934 SESSILE ORGANISMS William Head Esquimalt Victoria Departure bay Vancouver Crescent Princo Rupert Shannon bay VERTICAL DISTRIBUTION TABLES Bankia Limnoria Balanus Mytilus Bryozoa I l l GENERAL DISCUSSION page BORING ORGANISMS Bankia 96 Limnoria •. .„ 100 SESSILE ORGANISMS .B.alaauB . 101 Mytilua 103 B'ryosoa 103 COMPARISON OF INFESTATION BY BANKIA AND LIMNORIA 103 COMPARISON OF INCIDENCE OF BORING AND SESSILE ORGANISMS 104 SUMMARY 105 ACKNOWLEDGMENTS 169 CITATIONS 111 APPENDIX DETAILED HYDROGRAPHIC TABLES William Head 114 Esquimalt 125 Victoria 127 Departure bay ' 136 Vancouver 156 Crescent L 175 -Prince Rupert 180 PRODUCTION Wooden test blocks have been exchanged at intervals in cer-tain coastal areas of Bri t i s h Columbia, with a view to determin-ing the extent and nature of infestation of the marine wood borers, Bankia setaeea and Limnoria lignor.vrou The investigation overlapped to a certain extent that made on marine wood borers by Fraser (1923, 1925) and Vvhite (1929). Hydrographic data were ob-tained for as many areas as was practicable in order that a re-lationship between the a c t i v i t y of the wood borers and the hydro-graphic conditions might be established. At the suggestion and with the kind encouragement of Dr. C. McLean Fraser, the problem was extended to include a record of the incidence of certain of the sessile organisms on the test blocks that were exposed in the course of the investigation. The two most destructive species of wood borers in the Canadian Pacific coastal waters are Bankia (Xylotrya) setaeea Try on and Limnoria lignorum (Rathke). (Fraser, 1983)* Bankia be-longs to the mollusc family Ter-edinidae while Limnoria belongs to the arthropod family Limnoriidae. (Clemens, 1933). Two other wood borers are listed, the mollusc borer Xylophaga washingtona Bartsch of the family Pholadidee and the arthropod borer Exosphae- roma oregensis (Dana) of the family Sphaeromidae. (Fraser, 1923; Clemens, 1933). Common names for Bankia setaeea are: \"giant or plumed p i l e -worm\" (Kbfoid, 1921); \"Northwest shipworm\" (Bartsch, 1922),\"teredo\" V or ^shipworm\" (Fraser, 1923), The common names given to Limnoria ligaorum are the \"gribble\" (Wallace, 1919; Fraser, 1923) or the \"sea louse\" (Fraser, 1923)« Bankia gouldi, the species studied by Sigerfoos (1908) at Beaufort, N0C., differs from Teredo navalis i n spawning habit. The eggs and sperms of the former are extruded into the water where subsequent development of the trochophore and the free-swimming veliger takes place* The veliger larvae of Teredo de-velop in the g i l l cavity. (Sigerfoos, 1908), Concerning the time of development prior to settling on wooden structures, Sigerfoos stated the following for 3ankia gouldls \"The rate of growth of. larvae of marine lamellibranchs, however, is slow, and I think that the larvae of ship-worms when they attach themselves must be at least•a month old© They may be more, for at this time their development is quite advanced and their organization complexc\" An interpretation of the length of the breeding season should be dependent upon a knowledge of the time required for the new i n -dividuals to develop and extrude mature gametes. Again reference must be made to the species which Sigerfoos studied,, \"Individua Is (B, gouldi)become sexually mature in a month after they have at-tached, and those which attach in August must bear ripe sexual products later in the season, so that the breeding period would seem to extend throughout the warmer months*\"(Sigerfoos, 1908)• Limnoria lignorum (Rathke) i s dioecious, but the sexes do not show very decided secondary sexual characters. The most notice-able difference i s i n size, the female being the larger of the two, (Ebfoid and Miller, 1927), Henderson, (1924) referring to the l i f e history of Limnoria ligaorum at St c Andrews, N.B. states that the period of incubation is not less than 4-6 weeks but sets no de-f i n i t e limitationsc Her temperature range was from -1.5° to 12,5°C. Coker (1923) gives two weeks as the period of incubation at Beau-fort, N.C. with a temperature range of from 8° to 30° C. Boring is commenced while the seventh thoracic appendages of the newly-hatched gribble are s t i l l lacking* (Henderson, 1924). Sessile organisms found on regularly exchanged blocks were barnacles, mussels, encrusting Bryozoans and tubicolous annelids, Ascidians and hydroids occurred on blocks exposed for three to four months at William Head, while hydroids and algae were present during similar periods in Departure bay. At Crescent, oysters (Ostrea lurida) were found on the bldbcks exposed three months. No detailed account is made of the incidence of ascidians, oysters? hydroids or algae. The barnacles were of the Balanus type. (Tise'cher (1928), in his study of the reactions of cyprid larvae of barnacles at the time of attachment stated that after a free-swimming period of from three days to several weeks, the cyprids attach to some substratum and metamorphose into the adult type of barnacle. The mussels were of the species Mytilus edulis Linnaeus• With reference to this species Field (1922) states that: \"The sexes are separate and mature their products at the end of the f i r s t yearffi VII A cili a t e d Larva is formed 4- 1/2 hours after f e r t i l i z a t i o n , and when. 10 weeks old possesses nearly a l l the organs of the adult,,M Encrusting Bryozoans of the Departure hay area are dealt with hy 0*Donoghue (1926). He found Membranipora v i l l o s a (Hincks) to be the most common species particularly i n the neighbourhood of extensive kelp beds* The- larva, generally known as the Cyphonautes, i s free swimming, Tubicolous annelids were of the family 8erpulidae» A l l the Polychaet larvae studied by Gravely (1909) were pelagic trochophores. REVIEW OF LIT3RAT0RE Fraser (1925) gives the f i r s t account of the destruction and activity of marine wood borers i n Canadian Pacific coastal waters 0 Bankia, Xylophaga and Limnoria. are l i s t e d by him as destructive agentSo He states with regard to distribution that! \"Xylotfrya (Bankia) and Limnoria were found almost everywhere where untreated piles were exposed*\" Xylophaga was found to be active only in one area, namely Rivers inlet© Included in his investigation were a l -most a l l the waters along the east coast of Vancouver island from Nonoose bay to Porlier pass with the various channels between, i s -lands as well as the open s t r a i t ; Quathiaski cove in Discovery pas-sage; Alert bay on Cormorant island; Sointula on Malcolm island; the majority of the channels from Queen Charlotte sound to Prince Rupert* He records (1925) infestation by Bankia and Limnoria of test blocks exposed in 1923 and 1924 at Victoria, Esquimalt, Quat-sino sound, Barkley sound, Digby island and Rivers inlet» Referring to the factors affecting the distribution of Bankia and Limnoria Fraser (1925) expresses the opinion that while the range of temperature and specific gravity are evidently suitable for growth, these factors are not the most potent ones affecting the rapidity and extent of infection within the area investigated* This conclusion was supported by the fact that infection in areas of somewhat similar sali n i t y and temperature range showed a wide var-iation* According to Fraser's findings, infestation by Bankia may be most intensive during the' spring and early summer months but must take place at a l l times of the year. (Fraser, 1925). Limnoria also was found by Fraser to thrive throughout the year. Although the extent of the season i n which gribble larvae are hatched out was not accurately determined by Fraser, there was evidence that i t must include a large portion of the year. White (1929) dealing with the breeding season of Bankia in Departure bay, summarizes his findings as follows: \"A preliminary investigation of the breeding season of Bankia setaeea has i n -dicated the occurrence of two breeding seasons: one of short dur-ation in the month of October, and another (probably the main one) commencing in the month of March®w White found that October and March were the months of low tem-perature and high s a l i n i t y and that during the winter months when no Bgnkia breeding took place, very low sa l i n i t i e s were recorded?. He suggests that whereas low temperature i s a favourable condition the dominant factor is a high s a l i n i t y . (White, 1929), There were indications from the results of Fraser (1925) of an association between Limnoria and species of barnacles, mussels, an-nelids, other isopods, etc. He thought that the tunneling of the wood by Limnoria might be beneficial to the other forms either be-cause better surfaces for attachment were provided or because the tunnels themselves served for protection. DISCUSSION Off SITES STUDIED In the selection of sites for investigation an effort was made to choose locations differing markedly i n ecological conditions* At the same time some attention was given to their importance as ship-ping centres and to their geographical position* At the south end of Vancouver island, William Head, Esquimalt harbour and Victoria inner harbour were selected as the most important harbours* In a l l of them temperatures and s a l i n i t i e s are relatively uniform, owing to their direct connection with the open ocean water* Vancouver har-bour and Boundary bay on the southern mainland and Departure bay on the east coast of Vancouver island were taken as representing bodies of water not di r e c t l y communicating with the ocean. Each of them is subject to considerable variation both in temperature and salinity* According to Lucas and Hutchinson (1927) a l l of them are influenced by Fraser river discharge® Boundary bay receives additional dischar-ges from the Nicomekl and Serpentine rivers* In northern waters, Prince Rupert harbour and Masset inlet were investigated* The body of ocean water at Prince Rupert is influenced by fresh water from the Skeena river* At Buckley bay and Shannon bay, Masset inlet, Queen Charlotte islands, low s a l i n i t i e s and a wide tem-perature range have been recorded. This hydrographical condition in Masset inlet i s made poss ible by the heavy r a i n f a l l end by the res-tr i c t i o n of the escapement of the diluted sea water by the shallow and narrow channel towards the entrance of the i n l e t . Plat© I 5 i Plats II P l a t e III Plats IV 8 Plate VI GENERAL METHODS METHOD OF OBTAINING INFESTATION DATA The method of procuring data of infestation was similar to that used by Fraser (1925). Douglas f i r test blocks 2\"x4\"x5\", double dressed, k i l n dried and free from knots and resin, were bored and placed on a bar® Each test block was separated by means of a wooden block l\"xl\"xl/2\". A numbered cell u l o i d \"chicken tag\" was attached to each block for identification. YJhere a set of blocks was placed out at one time, the bar supporting the blocks was placed horizontally, rather than v e r t i c a l l y as suggested by the Committee on Marine P i l -ing Investigations, National Research Council, Washington, D.C. (Atwood and Johnson, 1924)0 The vert i c a l distribution of the incid-ence of the organisms was studied by employing two or more sets of test blocks. At William Head, Departure bay, Vancouver and Crescent, three series of test blocks were used for each level investigated. Each block of the f i r s t series was exchanged for a new block at the end of the exposure interval, which interval varied from two weeks to two months. The second series consisted of twelve blocks which were placed on the horizontal bar. One block of the second series was taken out at the end of the exposure interval used for the particular station and a block of the third series was set out. When the test blocks had been changed twelve times, the entire frame was taken in and another set of blocks exposed. Only the data obtained from the f i r s t series of blocks are presented. At Esquimalt, Victoria, Prince Rupert, Buckley bay end Shannon bay, two sets of blocks were set out, one for exchange at fortnightly or monthly intervals, the other at intervals of 6 months© When, only one level was investigated and where conditions per-mitted the anchoring of the frame, the test blocks were placed at zero tide level, otherwise the test blocks were suspended from a float at an appropriate distance below that reached by the fresh water portion of the epithalassa. At Departure bay the levels inves-tigated were surface, zero tide level (8 feet from bottom) and bottom* The test blocks were suspended from a float for the f i r s t level and suspended from a dock for the two low levels* The counts of the Limnoria infestation and that of the easily recognizable sessile organisms were made with the unaided eye* Sub-sequently each block was ruled off into sections and examined with the aid of a binocular microscope^ using a 48 mm. objective* The area of the surface examined was determined and the infestation ex-pressed in terms of a unit block area of 40.5 square inches (261 square centimeters)* The number of individual Limnoria furrows was taken to represent the number of Limnoria attacking a test piece, regardless of the fact that the furrow might be empty or contain more than one animal at the time of examination* At Vancouver and Prince Rupert the exposed test blocks when re-moved, were sprayed with formaldehyde solution to prevent damage by the \"fish-meal weevil, Ptinus ocellus Brown? I am indebted to Professor G*J. Spencer for the identification of this organism. 12 METHOD 0? OBTAINING PHYSICO-CHEMICAL DATA Temperatures s a l i n i t y and the hydrogen-ion concentration were investigated with a view to'establishing a relation between the i n -cidence of the organisms and the environment* In such places as was practicable, water samples and temperatures were taken at the levels at which the test blocks were exposed* The temperatures for the most part were determined by the use of an or-dinary laboratory thermometer*. At Departure bay a thermograph and a reversing thermometer were used when avallable* The sea water samples were stored in two ounce \"medicine\" bottles and the total halide was determined within a year's time by means of Mahr•s silver nitrate method* (Lucas and Hutchinson, 1927). Hydrogen-ion concentration was determined by l a Mbtte's Cresol Red pH set* No correction was made for \"salt error*\" METHODS AND RESULTS BANKIA INFESTATION RESULTS William Head (Quarantine Station) Table 1. Period investigated: September 20, 1932 to July 20, 1934, Depth investigated: Six inches below surfaces Exposure interval: One month. Time: The infestation by Bankia was sporadic. No seasonal periodicity was demonstrated. Intensity: The infestation was light. The heaviest incidence was 5.2 per block for the month intervals January 20 to Feb-ruary 20, 1933 and Ifey 20 to June SO, 1933® Eydrographic condition: The average temperature and salini t y ranged from 7° to 11° 0. and from 30 to 31.5 parts per mille respectively. Tables 11 and 34. Figure 1 . Esquimalt harbour (Canadian Pacific Railway Co. o i l wharf) Table 2. Period investigated: November 4, 1933 to June 11, 1934, Depth investigated: Six feet below surface. Exposure interval: One month. Time: Every test block examined was attacked by Bankia. No seasonal periodicity was demonstrated. Intensity: The infestation was light, the greatest, count being 7.2 for the interval November 4 to December 9, 1933. Bydrographlc conditions The average temperature and salini t y ranged from 8° to 15° C. and from 30 to 31 parts per mille res-pectively. Tables 12 and 35. Figure 2 . Plate VII Figure 1 • Plate VIII * Figures 2 and 3 Victoria inner harbour (Johnstone St* bridge) Table S» Period investigated: October 15, 1933 to July 20, 1934* •9 Depth investigated: Six'feet below surface. Bxposure,JLn;teryal: Two weeks* Timet The infestation by Bankia was sporadic* No seasonal per-iodicit y was demonstrated* Intensity: The infestation was light* The count 4*8 per block per month for the interval A p r i l 6 to 13, 1934 was the greatest recorded. Hydrographic condition: The fortnightly average temperature and salinity varied from 7° to 15° C, and from 28*5 to 30*5 parts per mille respectively* Tables 13 and 36* Figure 3 * Departure bay (Pacific Biological Station) Tables 4 and 29* 1 Period investigated: October 4, 1931 to September 1, 1934, Depths investigated: (a) Surface (float); (b) Zero-tide level; (c) Bottom (eight feet below zero otide level* Exposure interval: Usually one month* Occasionally two months or longer© Time: Two principal periods of infestation by Bankia are evident from an examination of Table 4, a heavier f a l l infestation that extends from October (September) to December and a lighter spring infestation extending from March to May* These limits for the time of f a l l infestation are wider than those set by White (1929) who restricted i t to October. While no infestation took place from December 16, 1931 to Plate IX Figure 4 Harch 24, 1932 there was infestation from December, 1932 to Ap r i l 4, 1953 and in a l l the winter months of the season 1933 -1934* ' Ho infestation took place i n mid-summer 1932 hut counts were recorded for blocks exposed in both 1933 and 1934 from July to the f a l l . Departure bay Infestation may take place at a l l times of the year as contended by Fraser (1925} although infestation may cease during mid summer and mid winter in certain years. Intensity; The results f o r the period investigated point to the fact that the greatest a c t i v i t y of Bankia i s in the f a l l . This i s at variance with the nature of infestation of Bankia i n Departure bay as- reported by White (1929) who suggested that the main breeding season took place in the spring. The infestation f o r the month interval October 7, 1933 to November 4, 1933 was 258.0 per block. The heaviest spring attack was on the block exposed from February 4 to March 4, 1934, 5.9 per unit block area. Hydrographic conditi on; The fortnightly average temperature and . sal i n i t y ranged from 3° to 18°C. and from 18 to 29.3 parts per mille respectively for the period October 1, 1931 to August 13, 1932. The average temperature at the four foot level varied from 5° to 20° 0, for the period August 14, 1952 to August 19, 1933 and from 4.3° to 19° C. f o r the period August 20, 1953 to June 6, 1934. 19 The average -temperature and salinity at the three foot l e v e l ranged from 15° to 19° C, and from 21»3 to 26 parts per mille respectively for the period June 12 to September 3, 1934. Tables 14 and 37* Figure 4 0 Vertical distribution: Table 29. Infestation took place at the three levels investigated. There was no significant difference between the attack at the surface and at the zero tide level. The attack at the bottom however, was markedly greater than that at the two higher levels. In certain instances only the surface experimental block was attacked. In one case, only the bottom block showed infestation. Vancouver harbour (Gore avenue wharf) Table 5. . Period investigated: October 14, 1951 to May 19, 1934. Depth investigated: Zero tide level (ten feet from bottom) Exposure interval: Two weeks. Time: No infestation was recorded for the early summer months 0 Li The infestation f o r the remainder of the year was irregular. Intensity: The attack by Bankia was very light. The almost complete absence of attack is d i f f i c u l t to explain in view of the fact noted by Mr. J.R, Townsend that a destructive attack occurred i n 1929 at the site and level used for the present i n -vestigation. Hydrographic condition: Tables 15 and 38. Figure 5 . The average (fortnight) temperature and salinity ranged o o from 4 to 15.5 C, and from 15 to 28 parts per mille respec-tively. s f y Salinity \\ 1 i - / s'\\ / \\ / \\ / X \\ \\ \\ \\ \\ ? / . / / --i i | \\ \\ \\ > 1 1 1 Temperature -< 1 Salinity Temperature 21 S 20 g 19 g Pi 18 is Oot. Hov. Deo. 1 9 3 3 J m . Feb. Sfaroh ^ J m e ^ — V A H C O U V E R Gore Avenue Wharf . ^ Plate X Figure 5 Crescent {Crescent Oyster Go* float) Table 6. Period investigated: September 1, 1952 to May 16, 1954® Depth investigated* Zero tide level (one foot from bottom) Exposure interval: One month. Time: The Bankia attack was confined to the colder months of the year. Intensity: The infestation was l i g h t . Four. Bankia larvae per month per unit block was the heaviest count, the interval being from October 1 to November 16, 1953. Hydrograuhie condition: The period for which liydrographic data are given i s from May 18, 1955 to May 16, 1954. Tables 16 and 59, Figure 6 . The average temperature and s a l i n i t y ranged from 6° to 19° C. and from 21 to 28 parts per mille respectively. The samples were taken six feet below the surface at the daylight high flood tide. Prince Rupert (Fisheries Experimental Station) Table 7. Periods investigated: June 29 to November 10, 1952. l&reh 1 to August 1, 1954. Depths investigated: 1952: Two feet from bottom, 1954: Two feet from surface. Exposure interval: 1952: Two weeks. 1954: One month. Time: The incidence was recorded for the interval October 25 to November 10, 1952, Intensity: The results are inconclusive since the investigation has not been run long enough at this station. 22 Plats XI Figure 6 Plato XII • Figures 7and 8 24 Hydrograpalc condition: February 1 to August 1, 1934. The average temperature and salinity taken at six feet from the surface ranged from 4.6° to 13° C. and from 22.7 to 29 parts per mille respectively. Tables 17 and 40. Figure 7 , Buckley bay,. Ifesset' inlet, Q,ueen Charlotte islands. Table 8* Period investigated; October 1, 1931 to May 12, 1932. Depth investigated: light feet from bottom* (Below zero tide level). Exposure interval: Two weeks. Time: Every test block examined was attacked by Bankia. The investigation was not carried on long enough to show the seasonal characteristics of infestation. Intensity* The infestation by Bankia was never less than 5 per block per month. The most severe attack took place from October 1, 1931 to January 7, 1952. The number of Bankia l a r -vae per unit area of 261 square centimeters for the month inter-val from October 29 to November 26, 1931 was 1,620. Hydrographic condition: The temperatures and salinities taken at weekly intervals at -fee surface are presented in table 18. The temperature and salinity varied from 3.7° to 15.5° C. and from 9 to 20.7 parts per mille respectively. The very low sa l i n i t i e s (less than 16 parts per mille) were probably res-tricted to the epithalassa. Figure 8 . S H A N N O N B A Y 1! A 5 3 S T I N L E T ' 20 S H A . N H 0 H B- A Y Plate XIII Figures 9 and 10 26 Shannon -bay9 I/asset inlet, Queen Charlotte islands. Tables 9 and 10, Periods investigated: September 17, 1931 to September 15, 1932, November 3, 1933 to July 31, 1954, 1951-1932 Table 9. Depth investigated: l i g h t feet from bottom, (Six feet below zero tide level. Exposure interval: Two weeks. Time § As was the case at Buckley bay, every test block exposed was attacked by Bankia, Intensity: The infestation by Bankia was never less than 9 per block per month. The greatest a c t i v i t y was from September to November and during May and June, the f a l l infestation b e i n g the heaviest* The number of Bankia entries per unit area of 261 square centimeters for the month interval between October 15, 1931 to November 12, 1931 was 1,880, The infestation per unit area from May 26 to June 23, 1952 was 550, Hydrographic condition: Table 19, Figure 9 . The surface temperature and salinity (taken at weekly i n -tervals) varied from 3*5° to 14.5° C. and from 5,1 to 21.6 parts per mille respectively. The very low s a l i n i t i e s (less than 16 parts per mille) were probably re s t r i c t e d to the epi-thalassa. 27 1955-1954 Table 10 Period investigated: November 3, 1955 to July 31, 19 54. Depth investigated: Fourteen feet from bottom (zero tide l e v e l ) . Exposure interval: Two weeks. Time: The second investigation at Shannon bay again demonstrated a definite seasonal periodicity with regard to Bankia infestation. The f a l l infestation continued into the early winter months. The spring attack extended from A p r i l to the middle of June. As recorded for Buckley bay and for the f i r s t investigation at Shannon, every test block exposed was attacked by Banlcia. Intensity: The f i r s t test block was not exposed u n t i l November, 1955 by which time the heavy f a l l infestation of 1951 was well advanced. The most active attack during the spring of 19 54 was - from May 21 to June 18 when the count per unit area of 261 square centimeters was 1,080. The lowest count for the period inves-tigated was 9 per month. Hydrographic condition: Table 20. Figure 10 . The temperatures and s a l i n i t y samples were taken every two weeks at the level at which the test blocks were exposed; The temperature and salini t y varied from 5.5° to 16° 0. and from 17 to 21.6 parts per mille respectively* METHODS AMD RESULTS LIMNORIA INFESTATION RESULTS William Head (Quarantine Station) Table 1, Period investigated: September 20, 1932 to July 20, 1934, Depth investigated: Six inches below surface. Exposure interval: One month* Time: The infestation by Limnoria was continuous throughout the year. In 1933 the greatest activity was from June to July. During 1934 the increased activity began in March and continued u n t i l July 20, when the last test block was exposed. Intensity: The heavy attack by Limnoria took place from June 20 to July 20, the count for the month being 106. During the winter of 1933-1934 the infestation dropped to one or two i n -dividuals per block per month. The infestation from February 20 to June 20, 1934 ranged from 50 to 130 individuals per block per month. Hydrographic condition: The average temperature and s a l i n i t y ranged from 7® to 11° C. and from 30 to 31.5 parts per mille respectively. Tables 11 and 34. Figure 1 . Esquimalt harbour (Canadian Pacific Railway Co. o i l wharf) Table 2. Period investigated: November 4, 1933 to June 11, 1954. Depth investigated; Six feet below surface. Exposure interval: One month. Time: Every test block exposed was attacked by Limnoria. Intensity: Although the time of infestation was similar to that at William Head, the attack was three times as severe at Esquimalt. From March 11 to April 15, 1954 the count per block was 386c The extent of infestation at or near the surface was the second greatest at Esquimalt, the greatest having occurred at Departure bay, Fraser (1925) reported that the greatest amount of destruction wrought by Limnoria was at Belmont wharf, Esquimalt and at Ogden point, Victoria (outer harbour), Hydrograuhic condition» The average temperature and s a l i n i t y ranged from 8° to 15° C, and from 30 to 51 parts per mille res-pectively. Tables 12 and 35. Figure 2 , ctoria inner harbour (Johnstone St, bridge) Table 5, Period investigated: October 15, 1933 to July 20, 1934, Depth investigated: Six feet below surface. Exposure intervals: Two weeks. Time: No infestation occurred during the f a l l or early winter months of 1933. Infestation was continuous from February to July, 1934. Intensity: The greatest a c t i v i t y was recorded for the interval A p r i l 27 to May 25, 1934, the count being 17 per block. Hydrographic condition: The.average temperature and salinity varied from 7° to 15° and from 28.5 to 30.5 parts per mille respectively. Tables 13 and 36, Figure 3 , Departure bay (Pacific Biological Station) Tables 4 and 30. Period investigated; October 4, 1931 to September 1, 1954. Depths investigated; (a) Surface (float) (b) Zero tide level; (c) Bottom (eight feet below zero tide level)* .Exposure interval; Usually one month. Occasionally two months or longer. Timet Limnoria infestation took place during 29 of the 36 months investigated at Departure bay. In contrast to the cessation of attack during the winter months at William Head and at Crescent, infestation occurred during the winter at Departure bay„ Hydrographic condition: The average temperature and s a l i n i t y ranged from 3° to 18° C. and from 18 to 29.3 parts per mille respectively for the period October 1, 1931 to August 13, 1932. The average temperature at the four foot level varied from 5°to 20° C. for the period August 14, 1952 to August 19, 1932. and from 4,3° to 19° C, for the period August 20, 1933 to June 6, 1934, The average temperature and s a l i n i t y at the three foot level ranged from 15° to 19° 0, and from 21,3 to 26 parts per mille for the period June 12 to September 3, 1934, Tables 14 and 37, Figure 4 , Vertical Distribution. Table 30. Test blocks were exposed at three different levels con-currently at Departure bay, namely at the surface (float), zero tide (eight feet from the bottom) and at but not touching the bottom. The counts per unit area per month are presented in table 30. The average infestation was much greater at the bottom than at the surface or at the zero tide levels The average in-festation at the surface, however, was slightly greater than that at the zero tide level. Johnson and Miller (1935) found that the settlement of Limnoria on blocks exposed at Friday harbour was heavier below than above the zero tide level, a l -though i t extended upward to approximately mid-tide,, Vancouver harbour (Gore avenue wharf)- Table 5, Period investigated; October 14, 1931 to May 19, 1934,, Depth investigated: Zero tide level ( ten feet from bottom). Exposure interval:- Two weeks. Time: No seasonal periodicity infestation was demonstrated* Intensity:The a c t i v i t y was not very great. The greatest count, 8,4 per block was f o r the month interval July 22 to August 19, 1933, Hydrographic condition: The average temperature and s a l i n i t y ranged from 4° to 15*5° C, and from 15 to 28 parts per mille respectively. Tables 15 and 38, Figure 5 . Crescent (Crescent Oyster Co, f l o a t ) . Table 6. Period investigated; September 1, 1932 to May 16, 1954, Depth investigated.: Zero tide l e v e l (one foot from bottom). Exposure interval: One month. Time: The infestation by Limnoria at Crescent i s characterized by a definite seasonal periodicity. There was a complete ces-sation of gribble a c t i v i t y during the months of December, Jan-uary and February 1952-1935 and during December. January, Feb-r-uary and the f i r s t three weeks of March, 1955-1954, Intensity: The infestation from September 1 to October 1, 1952 .was 150 per blocks The following month only one individual attacked the exposed test block,, The a c t i v i t y varied from 90 to 110 per block per month during the interval May 50 to September 50, 1935. Hydro graphic condition: The period for which hydrographic data are given i s from May 18, 1933 to Kay 16, 1934. Tables 16 and 59. Figure 6 . The average temperature and salini t y ranged from 6° to o 19 C» and from 21 to 28 parts per mille respectively® The • samples were taken at the six foot level below surface on the high daylight flood tide. Prince Rupert (Fisheries Experimental Station) Table 7. Periods investigated: June 29 to November 10, 1952, March 1 to August 1, 1954© Depths investigated: 1932; Two feet from bottom» 1954; Two feet from surface. Exposure interval: 1952; Two weeks. 1934; One month. Time: Infestation occurred during the entire interval inves-tigated i n 1932, July to Ho verber 10, Infestation w a s recorded in 1934 for the months March, April, May and June. No attack took place during July, 1954. 33 Intensity: The infestation during the period investigated i n 1932 averaged 7 per block per month,, The average count per month during the period\" investigated in 1934 was 50 per block per month. Hydrographic condition: February 1 to August 1, 1934® The average temperature and salinity taken at six feet from the o o surface ranged from 4.5 to 13 C. and from 22.7 to 29 parts per mille respectively. Tables 17 and 40. Figure 7 • Buckley bay, Masset inlet, Queen Charlotte islands. Table 8. Period investigated: . October 1, 1932 to May 12, 1932® Depth investigated: Sight feet from bottom (Below zero tide leve l ) . Exposure interval: Two weeks. Time: Infestation was sporadic. Intensity: Infestation was very light. The largest count was 2 e6 per month. Hydrogranhic condition: Temperatures and salinities taken at the surface at weekly intervals are presented in table 18. The o o temperature and salinity varied from 3.7 to 15.5 C. and from 9 to 20.7 parts per mille respectively. The very low s a l i n i t i e s (less than 16 parts per mille) were probably restricted to the epithalassa. Figure 8 «, Shannon bay, Masset' inlet, Queen Charlotte islands. Tables 9 and 10. Periods investigated: September 17, 1951 to September 15, 1932. November 3, 1955 to July 31, 1954. 1931 - 1932 Table 9. Depth investigated: Eight feet from bottom (Six feet below zero tide level, Exposure interval: Two weeks* Time: From September 17, 1931 to March 31, 1932 the attack was sporadic* Every test block exposed during the period March 31 to September 15, 1932 was infested by Linmoria. Intensity: The attack was rather l i g h t . The greatest count per block per month, 19, occurred from May 12 to June 9, 1932* Hydrographic condition: Table 19* Figure 9 , The surface temperature and salinity (taken at weekly i n -tervals) varied from 3*5° to 14.5° C, and from 5*1 to 21*6 parts per mille respectively* The low s a l i n i t i e s (less than 16 parts per mille) were probably restricted to the epithalassa* 1933-1934 Table 10, Period investigated: November 3, 1933 to July 51, 1934, Depth investigated: Fourteen feet from bottom (zero tide level)* Exposure interval: Two weeks, Tims: The infestation from November 3, 1933 to February 9, 1954 was irregular. From February 9 to July 31, 1934 the attack was continuous. Intensity: As was the case during the f i r s t investigation at Shannon bay, the attack generally was not very great» The highest count per block per month was 45 for the interval March 26 to A p r i l 23, 1934* 35 Hydrographic condition; Table 20, Figure 10 . Sea-water samples were taken every two weeks at the level at which the test blocks were exposed® The temperature and salin i t y varied from 3,5 to 16° C. and from 17 to Sl 06 parts per mille respectively. METHODS AND RESULTS INCIDENCE OF SESSILE ORGANISMS William Head (Quarantine Station) Table 21. Period investigated: October 20, 1935 to July 20, 19 34* Depth investigated: Six inches below surface* Brpostire interval: One month, Balenus Times Settlement took place from March 20 to June 20, 1954* .Intensity: The incidence of Balanus was very;light, the greatest count being but 5 per block, Bryozoa Time and Intensity: A single encrusting bryozoan colony was found on the block exposed October 20 to November 20, 1933* Eydrographlc condition: The average temperature and salinity ranged from 7° to 11° C, and from 30 to 31,5 parts per mille respectively. Tables 11 and 34, Figure 1 „ Esquimalt harbour (Canadian Pacific Railway Co* o i l wharf5 Table 22* Period investigated: November 4, 1955 to June 11, 1934. Depth investigated: Six feet below surface. Exposure interval: One month, Balanus Time and Intensity: Thirty organisms settled on the block that was exposed from A p r i l 15 to May 12, 1954. A l l other blocks were free of infestation. •» Bryozoa .Times Settlement of encrusting bryozoa commenced on Harch 11 and continued to June 11, 1934, the date on which the last block was removed© Intensity; The count f o r the test block exposed May 12 to June 11, 1954 was 15. Esquimalt harbour Hydrographic condition: The average temperature and s a l i n i t y ranged from 8° to 15° C„ and from 50 to 51 parts per mille respectively. Tables 12 and 55. Figure 2 . Victoria inner harbour {Johnstone St. bridge) Table 25, Period investigated: October 15, 1955 to July 20, 1954. Depth investigated: Six feet below surface. Exposure intervals Two weeks. Balanus Time and intensity; Two organisms settled on the experimental block exposed from May 25 to June 22, 1934. A l l other blocks were without barnacles. Hydrographic condition: The average temperature and sa l i n i t y varied from 7° to 15° C. and from 28.5 to 50.5 parts per mille respectively. Tables 15 and 56. Figure 3 • Departure bay (Pacific Biological Station) Tables 24, 31, 32 and 3S„ Period investigated: October 4, 1931 to September 1, 1954, Depth investigated: (a) Surface (float); (b) Zero tide level; (c) Bottom (eight feet below zero tide level)*, Balanus Time: The main settlement of Balanus in Departure bay takes place in March, April, May and June. Some settlement usually occurs from August to November, Intensity: Of the two incidence periods which are indicated at Departure bay the early spring period is decidedly the heaviest,. On the block exposed May 18 to June 18, 1932 150 barnacles were recorded* The count f o r the block exposed during April, 1935 was 670» The. incidence during June, 1955 was 800 and during May, 1954 the count was 450. The greatest count per block during the months of late summer and f a l l was 5. Vertical distribution: Table 31. From a comparison of the counts f o r the five months for which records are complete for the three depths, surface (float), zero tide level and bottom, i t would seem that there i s a tendency for the barnacle cyprids to settle at or near the surface. It is apparent that test blocks must be placed at more than one level and that the surface must be included i f an adequate pic-ture of seasonal settlement i s to ba obtained. Mytilus Timet The principal period of incidence i s during July and August although attachment may begin as early as March® Intensityt Settlement from July 8 to September 8^ 1935 occurred at iiie rate of 110 per block per month. During March, 1954 the incidence was 8* The counts per block per month for trie in-tervals July 6 to August 6, 1934 and from xiugust 9 to September 1, 1934 were 10 and 325 respectively.) Vertical distribution: Table 32„ Demarcation of incidence at the different levels i s more decided than that found for Balanus© The counts for the levels, float, zero tide and bottom for the interval August 9 to Sep-tember 1, 1934 were 525, 35 and 0 per block per month respectively* From these results i t i s manifest that test biocks should be placed at the f i r s t two levels at least, i f reliable incidence for Hytilus edulis are to be obtained. In connection with the attachment of Mytilus edulis and Hytilus caiifornianus on test blocks placed at low water level at the pier of Scripps Institution of Oceanography, La Jolla, California,Coe (1952) makes the following statement: \"Of the several species of mussels occurring on the coast of California, only two of the edible species, M. edulis and caiifornianus have been found on the experimental blocks. Although these species form thick growths on the neighbouring piles, only a few individuals of the former and only tv/o of the latter were found attached to the blocks. The smooth surface evidently does not afford a suitable attachment for the byssus of the young molluscs, for the water i s often swarming with the free-swimming larvae of both species during the warmer summer months of the year*\" At Orescent no mussels were found on the test blocks placed at zero tide level although a heavy set of mussels commonly occurs on floats adjacent to the site where the test blocks are placed. Bryozoa Time' The incidence of Membranipora took place in 1952 and 1955 during the months of May and June* During 1954 settlement began in March and continued sporadically u n t i l the end of August, when the last block to be examined was removed. Intensity: The monthly count per block for May and June, 1935 was 155. The. incidence during March, April and May, 1934 was 42, 110 and 0 respectively* The heaviest settlement of Bryozoa took place at Departure bay. Vertical distribution: Table 55. Membranipora colonies at the levels, surface, zero tide and bottom numbered 80, 40 and 0 respectively. A tendency to aggregate at the surface is indicated. Sorpulids Time and in tensity: A single specimen attached to the block ex-posed August 9 to September 1, 1954. The organism was not suf-f i c i e n t l y developed to make possible i t s identification to genus. Hydrographic condition: Tables 14 and 37. Figure 4 ; The average temperature and sal i n i t y at the surface ranged 41 o o from S t o 18 C, and from 18 to 29,3 parts per mille respectively for the period October 1, 1951 to August 13, 19 32, The average temperature at the four foot level varied, from o o 5 to 20 0, for the period August 14, 1952 to August 19, 1932 and o o from 4,3 to 19 0, for the period August 20, 1953 to June 6, 1954, The average temperature and salinity at the three foot leve l ranged from 15° to 19° C, and from 21,5 to 26 parts per mille respectively for the period June 12 to September 3, 1934, Vancouver harbour (Gore avenue wharf) Table 25, Period investigated: October 14, 1931 to May 19, 1954, Depth investigated:Zero tide level (ten feet from bottom) Exposure interval: Two weeks, Balanus Time: Attachment occurred in the months April, May, July and September,, Intensity: The settlement was very light, in no instance exceed-ing 5 per block, Mytilus Time: Sporadic incidence took place from March to October, Intensity: Incidence was comparatively l i g h t . The greatest number 21, was recorded for the interval August 5 to September 2, 1935. Bryozoa Time and intensity: Only one colony was observed. This occurred on the block exposed from Ap r i l 25 to May 19, 1954, 42 Hydrographic condition' Tables 15 and 58. figure 5 . The average temperature and salinity ranged from 4° to 15.5° 0, and from 15 to 28 parts per mille respectively. Orescent (Crescent Oyster Co. float) Table 26. Period investigated\" September 1, 1952 to May 16, 1954. Depth investigated? Zero tide level (one foot from bottom) Exposure interval* One month. Balanus Time; Two periods of settlement occur at Crescent. The spring settlement of 1953 extended from Ap r i l to June. That of 1934 began in March. The principal f a l l settlement of 1952 was con-fined to September whereas that of 1935 began in October and con-tinued to December 16. Intensity: The counts for the blocks exposed from Ap r i l to June, 1955 averaged 180 per month. During the f a l l of 1955 from October 1 to December 16 settlement on blocks was at the rate of 160*per month. Such counts are relatively high. Bryozoa Time and intensity: Incidence of encrusting forms occurred only during ihe month of June, 1955 and amounted to 4 per block, Hydrographic condition: Tables 16 and 59. Figure 6 . The period for which hydrographic data are given i s from May 18, 1955 to May 16, 1954. The average temperature and s a l i n i t y ranged from 6°to 19° C. and from 21 to 28 parts per mille respec-tively. The samples were taken at the six foot level on the daylight high flood tide* 'i Prince Rupert (Fisheries Experimental Station) Table 27. Periods investigated: June 29 to November 10, 1932. March 1 to August 1, 1934, Depths investigated: 1932: Two feet from bottom. 1934: Two feet from surface 6 Exposure interval: 1932: Two weeks. 1934; One month. Balanus Time: Incidence occurred from July 20 to September 13, 1932 and from Ap r i l u n t i l August 1, 1934, the date the last biock examined was removed, • Intensity: Intensity at the bottom during 1932 was li g h t . In-cidence during the period A p r i l 2 to July 3, 1954 (two feet from surface) was at the rate of 105 per block per month. Mytilus Time: Settlement took place during July and August, Serpulids Time and intensity: Six specimens settled on the block exposed feom June 29 to July 20, 1932 and 1 on the block exposed from October 25, 1932 to November 10, 1952, Settlement during 1954 occurred only in July, during which time 5 serpulids attached. Bryozoa Time and intensity; A light settlement of encrusting Bryozoans took place during the months June, July and August. Hy drographic condition; February 1 to August 1, 1934, The average temperature and salinity taken at six feet from the surface ranged from 4,6° to 13° C. and from 22»7 to 29 parts per mille. Tables 17 and 40. Figure 7 . Shannon bay, Masset-.. inlet, Q,ueen Charlotte islands. Table 28. Period investigated; November 3, 19 35 to July 51, 1934. Depth Investigated: Fourteen feet from bottom (zero tide level) Exposure interval: Two weeks. Balanus Time: Sporadic settlement took place from Ap r i l 23 to July 31, 1954, No settlement took place from November 5, 1933 to A p r i l 25, 1934. Intensity: Spring settlement per month did not exceed 17 to the blocks Incidence on the last block, which was exposed from July 17 to 31, 1954 was 600, or at the rate of 1,200 f o r a month interval. Hytilus Time: Incidence was sporadic. Settlement occurred during the months of December, January, March, April, July and August. This i s the only record of winter attachment of Hytilus. (It i s of interest that infestation by Bankia was continuous at this station.) Field (1922) found that My-tilus edulis spawned at the Atlantic coast from A p r i l to Septembers Fish (1925) reported that Mytilus edulis larvae appeared in the plankton hauls taken at Woods Hole in June (1922) and continued to be taken as late as December. Hydro graph! c con dit i o n T a b l e . 20. Figure 10 « Temperatures and salinities were taken every two weeks at the level at which the test blocks were exposed. They varied from 3.5° to 16° C. and from 17 to 21.6 parts per mille res-pectively. TABLE I BANKJA AND LIMNORIA • WILLIAM HEAD Depth ^ 1 foot from surface Date . Infestation*. Bankia Area 261 sq Limnoria Sept* 20, 1932 to Oct* 20, 1932 0 8*4 Oct* 20, 1932 to Nov, 20, 1932 0 1.9 Nov* 20, 1932 to Dec, 20, 1932 6.5 0.6 Dec* 20, 1932 to Jan* 20, 1933 1*5 4.6 Jan* 20, 1933 to Feb. 20, 1935 5*2 0.6 Feb.. 20, 1933 to Mar. 20, 1935 1*5 7,5 Mar* 20, 1933 to Apr* 20, 1955 0 5.9 Apr. 20, 1935 to May 20, 1953 1.5 5.9 May 20, 1935 to June 20, 1955 5.2 19.5 June 20, 1953 to July 20, 1935 0 106.0 July 20, 1955 to Aug* 20, 1955 1*5 10.5 Aug* 20, 1953 to Sep. 20, 1955 0 19.0 Sept. 20, 1955 to Oct. 20, 1955 0 1*0 Oct, 20, 1935 to Nov. 20, 19 53 0 3*0 Nov* 20, 1955 to Dec* 20, 1955 0 0 Dec, 20,. .1933 to Jan. 20, 1954 0 1*0 Jan* 20, 1934 to Feb. 20, 1934 5.7 4*5 Feb, 20, 1934 to Mar. 20, 1954 0 54*0 Mar, 20, 1934 to Apr, 20, 1934 0 154.0 Apr* 20, 1934 to May 20, 1954 0*8 61*0 May 20, 1954 to June 20, 1934 0 103.0 June 20, 1934 to July 20, 1954 0 21*4 TABLE I I BANKIA AND HmOBIk ' ESQUIMAU? HARBOUR Depth - 6 feet from surface Date Infestation. Bankia Area 261 sq* Limnoria NOT* 4, 1933 to Dec. 9, 1933 7.2 10.0 Dec* 9, 1933 to Jan, 7* 1934 0*6 13.1 Jan. 7, 1934 to Feb. 11, 1934 2*0 58*8 Febi l i t 1934 to Mar* 11, 1934 0,6 131.0 Mar* l l j . 1934 to Apr-, 15, 1934 1*2 386,0 Apr* 15, 1934 to May ::.12, 1934 0.7 279.0 May 1934 to June 11, 1934 2.9 10.5 TABLE I I I VICTORIA, INNER HARBOUR Depth - 6 feet from surface \"If Date Infestation. Bankia Area 261 sq Limnoria Oct, 15, 1933 to Oct. 29, 1933 0 0 Oct. E9, 1933 to Nov. 11, 1933 0 0 NOT. l l j 1933 to Nov. 25, 1933 0 0 Nov. 25^ 1933 to Dec. 9, 1933 0*8 0 Dec. 9, 1933 to Dec. •27* 1933 0 0 Dec. 27, 1933 to Jan. 10, 1934 o 0 Jan. 10, 1934 to Jan. 24, 1934 0*8 o\" Jan. 24, 1934 to Feb. 10, 1934 0 0 Feb. 10j 1934 to Feb. 2*3j 1934 0 2,6 Feb. 23, 1934 to LSar. 9, 1934 0 0*6 S i r . 9, 1934 to Mar. 24, 1934 0 6*5 Mar. 24, 1934 to Apr. 6, 1934 0 5,2 Apr. 6, 1934 to Apr. 13, 1934 2.4 0*6 Apr. 13, 1934 to Apr. 27, 1934 0 0*6 Apr. 27, 1934 to fey 11, 1934 1,8 16*3 May 11, 1934 to May 25, 1934 1.4 1.9 toy 25, 1934 to June 8, 1934 0*6 1© 3 June 8, 1934 to June 22, 1934 1,4 6.5 June 22, 1934 to July 7, 1934 -j 0 1,9 July 7, 1934 to July 20, 1934 0 0 TABLE IV BANKIA AMD LMQRIA DEPARTURE BAY Depth. Infestation, Area 261 sq* cm. Bankia Limnoria Oct. % 1931 to NOT. 4, 1931 bottom 14,2 59,5 Nov. 1931 to NOT. 18, 1931 bottom 7.0 0 NOT. 18, 1931 to Dec. 2, 1931 bottom 5*6 6*5 Dec. 2, 1931 to Dec, 16, 1931 bottom -1*4 7*9 Dee. 16, 1931 to Dec, 30, 1931 bottom 0 353.0 Jan. 1, 1932 to Jan, 13, 1932 bottom 0 0 Jan. 13, 1932 to Jan, 27, 1932 bottom 0 72.0 Jan. 27, 1932 to Feb, 10, 1932 bottom 0 21,0 Feb. 10, 1932 to 'Mar.* 9, 1932 bottom 0 0 Mar. 9, 1932 to Mar. 24j 1932 bottom 0 470*0 Kar. 24, 1932 to Apr. 6, 1932 bottom 1.4 190,0 Apr. 7, 1932 to Apr* 21, 1932 bottom 0 72.0 Apr. 20* 1932 to May 4, 1932 bottom 0 285,0 May 4, 1952 to June 4, 1932 bottom 0 130*0 Jtme 4, 1932 to July 4, 1932 bottom 0 130*0 July 4, 1932 to Aug* 2, 1932 bottom 0 130*0 Aug. 2, 1932 to Sep. 2, 1932 bottom 16*0 25*0 Sep. 3* 1932 to Oct, 4, 1932 bot torn 2,8 0 Oct, 7, 1932 to Dec* 7, 1932 bottom 96*0 19.5 Dec. 4, 1952 to Feb, 4, 1933 bottom 21*0 100*0 Feb. 2, 1933 to Apr. 4, 1933 6 feet off 0,8 165.0 bottorn Apr. 2, 1953 to May 2, 1935 6 feet off 0 0 bot torn TABLE •IV (Continued) BANKIA AND LIMNORIA DEPARTURE BAY Depth Infestation* Area 261 sq* Bankia Limnoria May- 4, 1935 to June 15, 1953 6 feet off 0 41.0 bottom June 4,1953 to June 29, 1955 surface 0 0 June 29,1953 to July 8, 1933 - - ••. -July 8,1935'to Aug* 8, 1953 surface 5.4 222*0 X Aug* 8,1933 to Sep. 6, 1935 surface 5*4 0 Sep* 6, 1933 to Oct. 7j 1955 - • - .. -Oct* 7,1935 to Nov, 4* 1953 bottom 258*0 57,0 Nov* 4*1935 to Dec, 4, 1955 bottom 51,5 54*0 Dec* 4>1955 to Jan, 4,' 1934 bottom 2*8 53*0 Jan; 4,1954 to Feb, 4, 1954 - - -Feb„ 4,1954 to Mar, 1934 surface 5*9 35.0S Mar* 4,1934 to Apr, 4> 1954 surface 0,8 95.0s Apr. 4,1954 to May 4, 1934 surface 5.4 12*0 May 4,1954 to June 4i 1954 surface 1,7 85.0S~ June 4,1954 to July 5, 1934 surface 0 5*0 July 7,1954 to Aug, 9, 1954 bottom 7.5 22.0 Aug. 9,1954 to Sep, 1, 1954 bottom 22.0 41.0 Bottom TABLE V BANKIA AND LLWORIA VANCOUVER, GORE AVE. Depth - zero tide level (10 feet from bottom) • Date Infestation. Bankia Area 261 sq> Limnoria Oct. 14, 1931 to Nov. 4* 1951 0 0»6u Nov. 4, 1931 to Nov. 18, 1931 0 0,6 Nov. 18, 1931 to Dec. 3, 1931 0 1,9 Dec. 5, 1931 to Dec. 17, 1931 0 0 Dee. 17, 1931 to Dec. 31, 1931 0 0 Dec. 31, 1951 to Jan, 13, 1932 0 0.6 Jan. 13, 1932 to Jan, 27, 1932 0 1.3 Jan. 27, 1932 to Feb. 10, 1932 • 0 0 Feb. 10, 1932 to Feb. 27, 1932 0 0 Feb. 27, 1932 to Mar. 9, 1932 0 present Mar. 9, 1932 to Mar. 19, 1932 0 0 Mar. 19, 1932 to May . 10, 1932 0 present May- 10, 1932 to May 21, 1932 0 present May 21, 1932 to June 4, 1932 0 0.6 June 4, 1932 to June 18, 193 2 0 present June 18, 1932 to July 2, 1932 0 present July 2, 1932 to July 16, 1932 0 0 July 16, 1932 to July 30, 1932 0 0 July 30, 1932 to Aug. 13j 1932 0 present Aug. 13, 1932 to Aug.. 27, 1932 0 0 27, 1932 to Sep. 10 j 1932 0 0 TABLE V ( Continued) BANZZLA AND LIMNORIA VANCOUVER, Gl Depth - zero tide level Date Sep. 10* 1932 to Sep, 50, 1932 Oct. 1, 1932 to Oct, 15, 1932 Oct. 15 i 1932 to Oct* 29, 1932 Oct. 29, 1932 to Nov* 12, 1932 Nov. 12, 1952 to Nov* 26j 1932 Nov. 26, 1932 to Dec* 10, 1932 Dec. 10, 1952 to Dec* 26, 1932 Dec. 26, 1932 to Jan* 7, 1933 Jan. 7, 1953 to Jan* 21, 1933 Jan* 21, 1935 to Feb* 4, 1953 Feb. 4, 1955 to Feb* 18, 1955 Feb. 18, 1933 to Mar* 4, 1953 Mar. 1953 to Mar. 18, 1955 Ida** 18, 1935 to Apr* 10, 1955 Apr. 10, 1935 to Apr* 24, 1955 Apr. 24, 1955 to June 10, 1955 June 10, 1935 to June 24, 1953 June 24, 1935 to July 8, 1955 July- 8, 1955 to July 22, 1955 July 22, 1955 to Aug. 5, 1955 RE AVE. ( 10 feet from bottom) Infestation. Area 861 sq* onu Bankia Limnoria 0 0 0 0 ' 0 present 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 5*2 0 1*5 0 0 0 5*2 0 0 0 0 0 5*2 0 0*6 0 5.2 . TABLE V (Continued) , BANKIA AND LIMNORIA VANCOUVER, GORE AVE, Depth - zero tide level (10 feet from bottom) Date Infestation, Area 261 sq. cm, Bankia Limnoria Aug, 5, 1955 to Aug* 19, 1955 1.3 5.2 Augo 19, 1955 to Sep* 2, 1955 0 0 Sep. 1955 to Sep* 16, 1955 0 0 Sep, 16, 1955 to Sep. 50, 1953 0 0 Sep. 30, 1955 to Oct* 14, 1953 0 0 Oct* 14, 1955 to Oct. 28, 1955 0i 0 Oct. 30, 1953 to Nov* 15, 1935 0 0 Nov, 15, 1933 to Dec. 1, 1955 2,6 0 Dec. 1* 1955 to Dec* 16, 1953 0 0 Dec. 16, 1935 to Jan. 2, 1954 5.9 0 Jan* 2, 1954 to Jan* 15, 1934 1* 5 0 Jan. 15, 1952 to Feb* 2, 1954 . 0 0 Feb, 2, 1954 to Feb. 16, 1934 1.3 0 Feb* 16, 1934 to Mar. 6, 1954 1*3 0 Mar* 6, 1954 to Mar* 24, 1934 0 0 Mar* 24, 1954 to Apr* 9, 1954 0 0 Apr* 9, 1954 to Apr. 25, 1934 0 0 Apr* 25, 1954 to May 19, 1954 0 0 TABLE VI BANKIA AND LMTORIA ORESCENT Depth - zero tide level ( 1 foot from bottom) Kate Infestation. Area 261 sq.. Bankia Limnoria Sep. 1, 1932 to Oct. 1, 1952 0 150.6 Oct. 1, 1932 to Oct, 31, 1952 2.6 0.6 Oct, 51, 1932 to Nov. 30, 1932 0 1*3 Nov. 50, 1932 to Dec, 30, 1932 0 0 Dec. 30, 1932 to Jan. 30, 1935 2.6 0 Jan. 30, 1933 to Feb. 28, 1933 1.3 0 Feb. 28, 1933 to Wiser, 30, 1933 0 0*6 Mar-* 30, 1933 to Apr, 30, 1933 0 12*4 Apr. 30, 1933 to May 30, 1953 0 41*2 1 % • 30, 1935 to June 30, 1935 0 94*5 June 30, 1933 to July 30> 1935 0 91*0 July 30, 1933 to Aug, 30, 1955 0 114*0 Aug. 30, 1935 to Sep, 50, 1953 0 103.0 Oct. 1, 1933 to Nov, 16, 1933 5,2 3*2 Nov0 16 j 1933 to Dec, 16, 1933 0 0 Dec. 16, 1933 to Jan.. 16, 1934 2,6 0 Jan. 16, 1934 to Mar. 20, 1934 1.3 0 lifer. 20, 1934 to Apr* 16, 1934 0 2*6 Apr. 16, 1934 to May 16, 1934 0 10.5 55 TABLE VII BAWKEA AND LII-1T0RIA PHBTCE RUPERT Depth - 2 feet from bottom Date Infestation. Bankia Area 261 sq. Limnoria June 29, 1932 to July 29j 1932 0 24.2 July 29, 1932 to Aug* 3, 1932 0 9.3 Aug. -3, 1932 to Aug. 17, 1932 0 5*9 Aug. 17, 1932 to Aug, 31, 1952 0 0*6 Aug. 31, 1932 to Sep* 13, 1932 0 9,3 Sep. 13, 1932 to Sep, 28, 1932 0 0.6 Sep. 28, 1932 to Oct. J L S J 1932 0 12.4 Oct, 12, 1932 to Oct. 25, 1932 0 0.6 Oct. 25, 1932 to N O T * 10, 1932 0*7 3.2 Depth - 2 feet from surface Mar* l j 1934 to Apr. 2, 1954 0 53.5 Apr* 2, 1934 to July 3, 1954 0 214*0 July 3, 1934 to Aug* 1, 1934 0 0 56 TABLE VIII BANKIA AND LIMORIA BUCKLEY BAY, MASSETT INLET Depth - 8 feet from bottom Date Infestation, Area 861 sq,, em* Bankia Limnoria Oct, 1* 1951 to Oct. 15, 1951 607 0 Oct. 15, 1951 to Oct. 29, 1951 551 0.6 Oct, 29, 1951 to NOT. 12 j 1951 828 0 Nov. 12, 1951 to NOT. 26, 1951 796 0 NOT* 26, 1951 to Dec. 10, 1951 259 0 Dec. 10 j 1951 to Dec* 24* 1951 106 0 Dec. 24* 1931 to Jan, 7* 1952 49 0 Jan, 7, 1952 to Jan* 1952 15 1.3 Jan. 21, 1932 to Feb* 4* 1952 6 0 Feb. 1952 to Feb* 18, 1952 17 0.6 Feb. 18 i 1932 to Mar* 4* 1952 3 1,9 lifer* 4, 1952 to Mar, 17, 1952 11 0 Mar* 17, 1952 to Mar* 51, 1952 1 0 Mar. 51, 1952 to Apr, 14, 1952 4 2,6 Apr* 14, 1952 to Apr. 28, 1952 5 0 Apr. 28, 1952 to May 12, 1952 5 0 TABLE IX •BANKIA AND LIMNORIA SHANNON BAY, MASS1TT INLET Depth - 8 feet from \"bottom Date Infestation, Area 261 s q , i Bankia Limnoria Sep, 17, 1931 to Oct. 1, 1931 361 0 Oet, l i 1931 to Oct. 15, 1951 354 2*6 Oct* 15, 1951 to Oct. 29, 1931 554 0 Oct, 29, 1931 to NOT. 12, 1951 1,525 5*9 NOT, 12, 1951 to Nov* 26, 1951 21 0 NOT, 26, 1951 to Dec, 10, 1931 24 1.9 Dec* 10, 1951 to Dec. 24, 1931 85 1.5 Dec* 24, 1951 to Jan* 7, 1932 56 0 Jan* 7* 1952 to Janw 21, 1932 102 0 Jan* 21, 1952 to Feb. 4, 1932 51 1*9 Feb, 4, 1952 to Feb.. 18* 1932 6 0 Feb* 18, 1952 to Mar. 3, 1932 16 0 Mar. 3, 1952 to Mar. 17, 1932 52 1® 3 Mar. 17, 1952 to Mar. 31, 1932 28 0 Mar, 31, 1952 to' Apr* 14, 1932 77 9.5 Apr. 14, 1932 to Apr. 28, 1932 51 9.5 Apr* 28, 1952 to May 12, 1932 51 5*2 May- 12, 1932 to May 26, 1932 127 7.5 May 26, 1952 to June 9, 1932 580 11.7 June 9, 1252 to June 3*5} 1932 168 June 23, 1952 to July 7, 1932 45 0,6 TABLE IX (Continued) BAMIA AMD LBS'TORIA SH&MTOKT BAYj MSSSETT- UJL1T •Depth - 8 feet from bottom Date Infestation. Bankia Area 261 sq* Limnoria July 7, 1932 to July 21, 193 2 21 1.9 July 21, 1932 to Aug* 4, 1932 24 2*6 Aug* 4, 1932 to Aug. 18, 1932 6 10.5 Aug* 18* 1932 to Sep. 11, 1932 5 6*5 Sep* 1, 1932 to Sep. 15, 1932 8 1,9 TABLE X BANKIA AMD LHKTORIA SHANNON BAY,. MASSETT INLET \" •; Depth - 14 feet from bottom (zero tide level) Date Infestation* Area 261 sq> Bankia Limnoria Nov, 3, 1935 to Nov. 17, 1933 93 0 Nov, 17, 1935 to Dec, 1, 1933 119 X$ 3 Dec. 1, 1933 to Dec, 15, 1933 35 1*3 Dec. 15, 1955 to Dec* 29, 1933 13 1,3 Dec. 29, 1935 to Jan* 12, 1934 25 1*9 Jan. 12, 1954 to Jan* 26, 1934 12 0 Jan, 26, 1954 to Feb, • 9, 1934 7 0 Feb. 9, 1954 to Feb. 26, 1934 4 0,6 Feb. 26, 1934 to Mar* 12, 1934 5 3© »2 Mar. 12, 1954 to Mar. 26, 1954 5 5,3 Mar. 26 * 1934 to Apr, 9, 1934 96 7*5 Apr. 9, 1954 to Apr, 23, 1934 179 37,4 Apr. 23, 1934 to May •7t ,1934 189 5*2 May 7, 1934 to lay 21, 1934 266 3*9 May 21, 1934 to June 4j 1954 551 5*8 June 4, 1934 to June 18, 1954 751 5,2 June 18, 1934 to July 2, 1934 14 1*9 July 2, 1934 to July 17, 1934 22 2,6 July 17, 1934 to July 31, 1934 4 2,6 TABLE XI B3DR0GHAPHI0 DATA. Averages for sal i n i t i e s and temperatures for intervals of block exposure Samples taken 6 feet from surface WILLIAM HEAD Date 0 Temp. °()0 . Cl/kg. /oo Salinity Sep. 20, 1932 to Oct* 20, 1952 10*4 17*30 51.26 Oct. 20* 1932 to Nov. 20, 1952 9.2 17*58 51.40 Nov* 20, 1952 to Dec. 20, 1952 8.2 17.14 50.97 Dec* 20, 1952 to Jan. 20, 1953 7,4 17.14 30.97 Jan. 20, 1953 to Feb. 20, 1933 6.8 17*21 51*09 Feb. 20, 1955 to Mar. 20, 1933 7,0 17.41 31*46 Mar* 20, 1933 to Apr. 20, 1935 7.6 17.11 50*91 Apr* 20, 1955 to May 20, 1935 8*6 17.42 51.47 Ifey - 20, 1953 to June 20, 1955 9.8 17.51 51.27 June 20, 1955 to July 20, 1955 10.4 17.04 50*79 July 20, 1953 to Aug. 20, 1955 11,0 16.77 50.50 Aug. 20. 1955 to Sep. 20, 1955 10.8 17.01 30.73 Sep. 20, 1935 to Oct. 20, 1955 9.8 17.09 50.88 Oct. 20, 1955 to Nov. 20, 1955 9*0 17.08 30,86 Nov. 20, 1955 to Dec* 20, 1955 8*1 17*12 50.95 Dec* 20, 1955 to Jan* 20, 1954 7*8 16*76 30.28 Jan* 20, 1954 to Feb. 20, 1954 8*0 16.70 50.17 Feb. 20, 1954 to Mar. 20, 1954 8.1 16.81 30.57 Mar* 20, 1934 to Apr. 20, 1954 8*7 17.00 50.72 Apr. SO, 1954 to May 20, 1954 9*7 17.04 50.79 May 20, 1954 to June 20, 1954 10.5 16*95 50.59 June 20, 1954 to July 20, 1934. 11.1 17.05 50*77 TABLE XI2 HYDROGRAPHIC DATA Average for temperatures and sa l i n i t y for intervals of block exposure Samples taken 6 feet from surface ESQHIMALT Date • 0 .Temp* °/oo Cl/kg. % o Salinity Hov, 4, 1935 to Dec* 9, 1955 8.8 17.04 50.79 Dee* 9, 1955 to Jan, 7, 1934 7.4 16*94 30*61 Jan, 7, 1934 to Feb. 11, 1954 8.0 16.79 50*34 Feb, 11, 1934 to Mar. 11, 1954 8.5 16.88 50.50 Mar, 11, 1934 to Apr* 15, 1954 10.2 16*77 50,50 Apr, 15, 1954 to May 1954 11.8 16,79 50,54 May 1 1934 to June i i , 1954 15.0 16.80 50.55 June 11, 1954 to July l , 1954 14.5 16*84 30.43 TABLE XIII HYDBOGBAPHEC DATA . Averages for temperatures and sa l i n i t y for intervals of block exposure Deptn - 6 feet from surface VICTORIA, INKER HARBOUR, JOHNSTONE ST, BRIDGE Date .0 , Temp, /oo • Cl/kg /oo Salinity Oct, 15, 1935 to Oct. 29j 1935 10.0 16*80 50.55 Oct, 29* 1933 to Nov. 11, 1953 9,8 16*66 50.10 Nov. 11, 1933 to Nov. 25, 1955 9*1 16*55 29*90 Nov. 25, 1933 to Dec. 9, 1935 8.0 16*37 29*58 Dec. 9> 1933 to Dec. 27, 1955 7.5 16.55 29.87 Dec. 27, 1935 to Jan. 10, 1954 7.7 16*55 29.54 Jan. 10, 1934 to Jan. 24, 1954 7*5 16.22 29,51 Jan. 24j 1934 to Feb. 10* 1954 8.0 16*29 29.45 Feb, 10, 1934 to Feb. 25, 1934 8.2 16*55 29*54 Feb. 23, 1934 to Mar. 9, 1954 8*0 15*79 28,55 Mar* 9, 1934 to Mar. 24, 1954 9.2 16*14. 29,16 Jfer, 24, 1934 to Apr. 6, 1954 9.6 16 .08 29*04 Apr,- 6i 1954 to Apr. 13, 1954 10.0 16.56 29*92 Apr. 13, 1934 to Apr. 27, 1954 11,5 16*25 29*57 Apr. 27, 1954 to May 11, 1954 11*2 16*62 50*05 May 11, 1934 to May 25, 1954 12.7 16*55 29,90 May 25, 1934 to June 8, 1954 13*5 16*64 50*07 June 8, 1954 to June 22, 1954 14.8 16.65 50.08 June 22, 1934 to July 7,' 1954. 14.4 16*80 50.55 July 7, 1934 to July 20, 1954 14*2 16.82 30.39 July 20, 1954, to July 31, 1934 14.7 16.91 30.55 TABES XIV HYDROGRAPHIO DATA Averages for temperatures and s a l i n i t i e s , DEPARTURE BAT Date Depth 1931 Oct. 1 to Oct. 14 Surface Oct. 15 to Oct. 27 . ' Oct. 28 to Nov. 7 \" Nov. 9 to Nov. 30 \" Dec. 1 to Dec. 14 \" Dec. 16 to Jan. 7 » 1932 Jan.* 8 to Jan. 11 \" Jan* 13 to Jan. 15 n Jan. 17 to Jan* 20 \" Jan. 21 to Feb. 4 \" Feb. 5 to Feb. 25 \" Feb* 26 to Mar. 1 « Mar* 4 to Mar. 9 4 feet below surface Mar, 10 to Mar* 16 » Mar. 19 to Apr. 9 \" Apr. 11 to Apr* 27 \" Apr* 28 to May 10 \" May 13 to May 27 \" May 28 to June 7 \" June 8 to June 23 \" 0 Temp. /oo Cl/kg. /oo S a l i n i t y 11.9 15.07 2*7 « 23 10.4 15.00 27.11 9*6 12.90 23.31 7*5\" 15.06 27,21 • 7.0 15.20 27.47 6.3 IS & G 2 23.17 6.8 13*86 25*05 3.0 10.41 18.82 5.7 11,82 21.37 5© 2 15.28 27.61 .6*2 15.54 28.08 7.1 9.06 16,38 5.8 15.95 28. 82 7.4 16*22 29.31 7.9 15,41 27.85 9,8 14.71 26.58 12.6 14.76 26.67 12.8 13.95 25.21 14,8 14.14 25$ 55 X7 # 1 15,56 24.51 TABLE, XI? (Continued) HTDROGEAPHIC DATA Averages for temperatures and s a l i n i t i e s DEPARTURE BAT C /oo /oo Depth Temp. Cl/kg Salinity June 24, 1952 Surface 17.4 10.69 19.35 June 29 to July 8 2 feet he low- 17.7 12.60 22.77 surf ace July 11 to July 14 4 feet below- 14*5 14.40 26,02 surface July 15 to JUly 26 »t 16 4 9 12*54 22,66 July 27 to Aug, 3 » . 17,0 12*84 23© Si Aug, 8 to Aug. 13 If 17.4 65 TABLE XIV (continued ) EXDROGRAPHIC DATA Averages computed from thermograph records. Thermograph bulb placed 4 feet below surface. DEPARTURE BAY Mean Mean Temp* Temp. Date C° Date 0° 1932 1955 Aug. 14 to Aug. 25 16.9 Mar, 10 to Mar. 19 6.4 Aug, 24 to Sepi 2 17.8 Mar. 20 to Mar. 29 6.6 Sep, 3 to Sep, 12 15.5 Mar. 50 to Apr. 11. 8*1 Sep. 13 to Sep, 22 14.1 Apr. 12 to Apr. 21 9.6 Sep* 23 to Oct. 2 15.6. Apr. 22 to May 1 Oct. 3 to Oct. 12 . 15.1 May 2 to May 11 9.8 Oct. 13 to Oct. 22 10.5 May- 12 to May 21 11.7 Oct. 23 to Oct, 51 10.5 May 22 to May 31 11.4 Nov. 1 to Nov, 17 June 1 to June 10 14.1 Nov. 18 to Nov* 20 8.9 June 11 to June 20 16.5 Nov. 21 to Nov* 28 8.4 June 21 to June 30 16,7 Nov. 29 to Dec* 2 8* 2 July 1 to July 10 16.5 Dec. 6 to Dec. 20 July 11 to July 20 17.5 Dec. 21 to Dec. 25 7.7 July 21 to July 50 19.6 Dec. 24 to Jan* 2 6*9 July 31 to Aug. 9 18.3 1935 Jan. 3 to Jan. 12 6.4 Aug. 10 to Aug. 19 19*7 Jan. 13 to Jan. 25 6.1 Aug. 20 to Aug. 29 18.6 Jan. 24 to Feb. 2 6,2 Aug. 30 to Sep. 8 14.8 Feb. 3 to Feb. 12 5.2 Sep. 8 to Sep. 18 15.0 Feb, 13 to Feb. 22 5.8 Sep* 19 to Sep. 28 12*0 Feb. 23 to liar. 9 6*2 Sep. 29 to Oct. 8 13,1 TABLE XIV (Continued) . HYDROGRAPHIC DATA Averages computed from thermograph records. Thermograph bulb placed 4 feet below surface. DEPARTURE BAY Mean Mean Date Temp. Date Temp. 1933 0 1934 0° Oct. 9 to Oct. 18 11.8 Feb. 4 to Feb. 13 4,6 Oct. 19 to Octo 28 10.4 Feb. 14 to Feb. 23 4.9 Oct. 29 to Nov. 7 9.6 Feb. 24 to Mar. 5 5® 2 Nov. 8 to Nov. 17 9.5 Mar. 6 to Mar. 10 5.5 Nov. 18 to Nov. 27 9.5 Mar. 11 to Mar. 13 . Nov. 28 to Dec. 7 8.5 Mar. 14 to Mar. 16 6,5 Dec. 7 to Dec. 17 7.5 Mar. 17 to Mar, 26 7.4 Dec. 18 to Dec. 19 7.4 Mar* 27 to Apr. 5 7.7 Dec. 20 to Dec. 27 Apr. 6 to Apr. 15 9,5 Dec. 28 to Dec. 29 7.5 Apr. 16 to Apr. 24 9.6 Dec. 30 to Jan. 8 7.2 Apr. 25 to May 4 11,0 1934 Jan. 9 t6 Jan. 18 6.7 May,/ 5 to May 14 10.8 Jan. 19 to Jan. 24 6.6 May 15 to May 24 12,6 Jan. 25 to Jan. 31 May 25 to May 31 15.1 Feb. 1 to Feb. 3 4.3 June 1 to June 6 15.8 TABLE XIV HJDROGHAPHIO DATA Averages for temperatures and salini t y for intervals of one week Samples taken 3 feet from surface DEPARTURE BAT Date 0 Temp, % o Cl/kg % o Salinity June 12, 1934 to June 18, 1934 17.8 13.50 24*04 June 19, 1934 to June 25, 1934 17.2 12.77 23*08 June 26, 1934 to June 30, 1934 17.1 12.78 25*10 July •'2, 1934 to July 9, 1934 17.5 15.70 24*76 July 10, 1934 to July 16j 1934 16.5 14*59 26*00 July 17, 1954 to July 23, 1934 16.8 11.92 21,55 July 24, 1954 to July 30, 1934 18© 1 15.49 24*58 July 31, 1954 to Aug. 6, 1954 15*4 14*39 26.00 Aug. 7, 1954 to Aug. 15, 1934 17.4 11.81 21*35 Aug., 14, 1954 to Aug. 20, 1934 18.8 13.14 23.75 Aug. 21, 1954 to Aug. 27, 1934 19*1 13.85 25.05 Aug, 28, 1934 to Sep, 3, 1934 18.0 14.01 25,52 TABLE XV HTDROGRAPHIG DATA Averages for temperatures and salini t i e s for intervals of block exposure Surface samples VANCOUVER, GORE AVE, Date 0 Temp. O / /oo Cl/kg. % o Salinity Oct, 14, 1931 to Nov.. ,4, ,1931\" 10.5 14.52 25.88 Nov. 4, 1931 to Nov. 18, 1931 9,3 15*95 35 s 31 Nov. 18, 1931 to Dec. 3, 1951 8*0 14*54 26.27 Dec. 3, 1931 to Dec* 17, 1931 7.6 15.02 27.14 Dec. 17, 1931 to Dec, 51, 1951 7*4 14*07 25.45 Dec. 31, 1931 to Jan* 13, 1932 7*5 15.17 27*41 Jan. 13, 1932 to Jan* 27, 1932 6.5 14*91 26.94 Jan. 27, 1932 to Feb. 10, 1932 6*1 15,47 27*95 Feb. 10, 1932 to Feb. 27, 1932 6.3 14*68 26*55 Feb. 27, 1952 to Mar* 9, 1932 6*1 15,67 24.70 Mar. 9* 1932 to Mar. 19, 1932 7.6 15,85 24*99 Mar* 19, 1952 to Apr* 10, 1932 7.7 15*89 25,10 Apr. 10, 1932 to May 10, 1932 9,5 15.60 24*58 May 10, 1952 to May 21, 1932 11,5 11*56 20,55 May 21, 1952 to June 4, 1932 12*2 10.70 19,54 June 4* 1952 to June 18, 1952 15,8 9.27 16*76 June 18, 1952 to July 2, 1932 14.6 9.22 16.67 July 2, 1952 to July 16, 1932 15*9 10.26 18,55 July 16, 1952 to July 30, 1932 14*5 10*54 18*69 July 30, 1952 to Aug. 13, 1932 14.4 12.42 22.45 TABLE XV (continued) HTDRO GRAPHIC DATA Averages for temperatures and salinity for intervals of block exposure Surface samples VMCOBVER, GORE AVE. 0. /oo /oo Date Temp. Cl/kg. Salinity Aug. 13, 1932 to Aug. 27, 1932 15,3 11*29 20*41 Aug. 27, 1932 to Sep. 10, 1932 13.6 13 ©59 24*20 Sep. 10, 1932 to Sep.. 50, 1932 12.3 13,51 24.42 Oct. 1, 1932 to Oct. 15, 1932 11.3 14.45 26*11 Oct. 15, 1932 to Oct. 29, 1932 10.1 14*28 25*81 Oct. 89, 1932 to Nov.. 12, 1952 9.1 13.89 25*10 Samples taken at zero tide level ( 10 feet from bottom) Nov. 18, 1932 to Nov. 26, 1932 5.0 12.28 22*09 Nov, 26, 1932 to Dec. 10, 195 2 4,6 13*48 24*56 Dec. 10, 1932 to Dec. 28, 1932 4.0 15.49 27,99 Dec, 26, 1932 to Jan. 7, 1955 4.1 15,41 27.85 Jan. 7, 1935 to Jan. 21, 1935 4*1 15.28 27.61 Jan. 21, 1935 to Feb. 4; 1955 4.1 25.55 27*70 Feb. 4\\ 1955 to Feb. 18, 1955 4.9 15*55 28,06 Feb. 18, 1955 to Mai*. 4, 1933 4.2 15,* 26 27,57 Mar. 4* 1955 to Mar. 18, 1953 4.1 15,56 27*75 Mar* 18, 1955 to lifer. 30, 1935 4.a 15*11 27*50 TABLE XV (continued) HZDROGRAPHIC DATA Averages for temperatures and sal i n i t y for intervals of block exposure Surface samples VANCOUVER, GORE AVE, C °/oo °/oo Date Temp. Cl/kg. Salinity Mar* 30, 1955 to Apr* 10 * 1933 8*0 14*88 26*89 Apr, 10, 1933 to Apr. 24, 1955 8,9 15*17 27,41 Apr, 24, 1955 to May 15, 1933 9.7 15.73 24.81 May 15, 1935 to June 10, 1955 10.9 11,43 20.66 June 10, 1935 to June 24, 1933 15.3 9.44 17.07 June 24, 1953 to July 8, 1955 13*2 8,70 15,73 July 8, 1955 to July 22, 1935 14*7 8*78 15.88 July 22, 1935 to Aug* 5, 1955 15,2 9*35 16,87 Aug, 5, 1933 to Aug. 19, 1955 15.5 11,06 19*99 Aug. 19, 1955 to Sep* 2, 1955 13*7 12*60 22,77 Sep. 2, 1935 to Sep. 16, 1953 12.1 12*24 22,12 Sep* 16, 1955 to Sep, 50, 1955 11*1 12*70 22*95 Sep. 50, 1953 to Oct, 14, 1935 10.7 13.99 25*28 Oct. 14, 1953 to Oct, 50, 1933 9.7 12.82 23,17 Oct. 30, 1955 to NOT. 13, 1955 9*0 13© 23 23.91 Nov. 13, 1933 to Dec, 1, 1935 8.6 13*33 24,09 Dec. 1, 1953 to Dec* 16, 1955 8*0 13.64 24* 65 Dec. 16, 1935 to Jan* 2, 1954 7.0 14.15 25,57 Jan* •2, •1954 to Jan., 15, 1954 7.1 13.13 25*75 Jan. 13, 1952 to Eeb, 2, 1954 6*9 13.96 25.23 TABLE XV (continued) HYDROGRAPHIC DATA Averages- for temperatures and salinity for intervals of block exposure Surface samples VANCOUVER, 9 0 R E AVE. Date C Temp. /oo Cl/kg. /oo Salinity Feb. 2, 1934 to Feb. 16* 1934 7.4 13.66 24.69 Feb. 16, 1934 to Mar. 6, 1934 7.5 13,98 25.26 Mar* 6* 1934 to Mar. 24, 1934 7.9 14,36 25.95 Mar. 24, 1934 to Apr. 9, 1934 8*6 13.10 23.68 Apr. 9, 1934 to Apr. 1934 10.2 13.21 23.87 Apr. 23, 1954 to May 1 9 , 1934 10.9 10.09 18,24 72 TABLE XVI BYDROGSAPHIC DATA Samples taken at daylight flood tide Depth - 6 feet below surface CRESCENT Date 0 Temp. /oo Cl/kg* /oo Salinity May 18, 1933 to May 30, 1935 15.4 15.17 27.41 May 30* 1933 to June 30, 1955 16.5 15.81 24.96 June 30, 1933 to July 30, 1953 18.7 11. 80 21« 2*1) July 30, 1933 to Aug, 50, 1955 18.9 12.69 22.94 Aug. 30, 1933 to Sep. 30, 1935 14*6 13*68 24.72 Oct. •1, 1933 to Oct* 16, 1955 12* 5 15* 28 27.61 Oct, 16, 1933 to Nov. 16, 1953 9.5 14.83 26.80 Nov. 16, 1933 to Dec. 16, 1955 7*5 14.82 26.78 Dec. 16, 1933 to Jan. 16, 1934 6.2 14*82 26,78 Jan. 16, 1934 to Jan.. 31, 1954 7.0 14.64 26*46 Feb. h-1934 to Feb. 4, 1954 7.7 15.10 27.29 Mar.- 20, 1934 to Apr. 16*. 1934 10*2 15* 32 27*68 Apr. 16, 1934 to May 16, 1954 14.4 14*94 27*00 73 TABLE XVII HYDROGRAPHIC DATA Bi-monthly averages of temperatures and salinity Depth - 6 feet from surface PRINCE RUPERT, FISHERIES EJFERBCMTAL STATION Date C Temp* % o Cl/kg % o Salinity Feb. 1, 1934 to Feb. 15, 1934 4.6 14,89 26*91 Feb. 15. 1934 to Mar. It 1954 5.8 15.95 28.78 tor. 1, 1934 to Mar. 15, 1934 6.0 15.84 28.62 Mar. 15, 1934 to Apr. 1, 1934 6.6 15.91 28,75 Apr. 1, 1934 to Apr* 15, 1934 6.7 16.08 29,05 Apr. 15, 1934 to May 1,. 1934 8.5 14.55 26.26 May 1, 1934 to May 15, 1934 7*9 15.56 24*51 May- 15 * 1934 to June 1, 1934 10* 2 12*65 22»86 June 1* 1934 to June 15, 1934 11.7 12.57 22 & 7 2 June 15, 1934 to July 1, 1934 10.7 12.77 25.08 July 1, 1934 to July 15, 1934 11.2 12.98 23.46 July 15, 1934 to Aug* 1, 1934 11.5 15.41 24,24 Aug* 1, 1934 to Aug, 15, 1934 12.9 15.75 24.85 TABLE XVIII HYDROGBAPHIO DATA Surface samples BUCKLEY BAY, HASSETT INLET Date Time C Temp« /oo Cl/ k g . % o Salinity October 8, 1931 15100 15.5 9.09 16.44 15 17:00 14*5 8,48 15.34 22 14:00 i i . o 11.41 20.63 29 16:30 11.0 10*57 ' 19,11 November 5 13:oo 10.5 7*57 13,69 12 16:oo 10.0 11*00 19.89 19 13:30 9*5 11.54 20.86 26 15:00 8*0 9,65 17.45 December 3 13:00 8.0 5.06 9*16 10 15:00 8*0 11.70 21,15 17 10:00 4.0 8*68 15.70 24\" 15:00 6.0 10*05 18.17 31 9:00 6*0 8*29 14.99 January 7, 1932 12:00 7.0 9*92 17.94 14 9:00 4*0 8.99 16*26 21 15:00 5.5 11.35 20.52 28 8:oo 3.7 9.66 17.47 February 4 14:30 4*0 10.54 19.05 11 8:00 4.0 11.33 20.48 18 11:30 4*5 11.45 20.70 25 8:00 4.5 March 3 13:30 5.0 TABLE XVIIl(Continued) HYDROGRAPHIC DATA Surface samples BUCKLEY BAY, MASSETT INLET 0 °/oo Date Time Temp, Cl/kg. Salinity March 10 8:00 4.5 17 11:00 6.0 24 17:00 7.0 31 11:00 6.5 A p r i l 28 9:30 10.0 Date September 24, 1931 October 1 8 15 22 29 November 5 12 19 26 December 3 10 17 24 31 January 7, 1952 14 21 28 February 4 TABLE XIX HYDROGRAPHIC DATA Surface samples SHANNON BAY, MASSETT INLET 0 /oo Time Temp. Cl/kg. Salinit; 15:50 14.5 11, 61 20.99 17:50 15.0 18:15 14 11*55 20*48 15:00 15.5 11.92 SI* 55 17:15 10.5 8.76 15,84 17:50 9.5 6*75 12*18 10:50 8.0 5*02 5.48 16:oo 9,0 10.55 18.71 IIJSO 7.0 10.50 18,62 16:14 6.5 11.04 19*96 15:00 7.5 11*81 21*55 15:45 8.0 11.80 21.55 18:50 7.7 8*91 16.11 10:15 6*5 8.96 16,20 14.25 5*5 8*99 16, 26 16:55 6,7 2*81 5,10 14:50 7.5 5.25 5,86 16:15 6.7 10*22 18.48 9:00 5.5 10,25 18,50 12:15 5.5 10.28 18.59 10:00 5.7 4*95 8.96 TABLE XIX (Continued) HHffiOGRiPHIC DATA Surface samples SHMNQN. I JAY, MAS SETT INLET Date Time 0 Temp. /oo Cl/kg. /oo Salinity February 18, 1932 16.00 4,5 5,63 10.19 25 18.00 5,7 11 1933 to Dec, 9, 1935 0 0 Dec, 9, 1933 to Jan. 7, 1934 0 0 Jan. 7, 1934 to Feb. 1954 0 0 Feb, 11, 1934 to Mar. 11, 1934 0 0 Mar, 11, 1934 to Apr. 15, 1954 0 5.0 Apr, 15, 1934 to May 12, 1934 29.6 4.7 May 12, 1934 to June 11, 1934 0 14.6 82 TABLE XXIII SESSILE ORGANISMS VICTORIA., INNER HARBOUR Depth - 6 feet from surface Infestation. Area 261 sq* cm. 'Date Balanus Oct. 15, 1935 to Nov. 11,\" 1935 0 Nov. 11, 1955 to Dec. 9, 1955 0 Dec. 9, 1955 to Jan. 10, 1934 0 Jan. 10, 1954 to Feb. 10, 1954 0 Feb. 10, 1954 to Mar. 9f 1934 0 Mar, 9, 1934 to Apr. 6, 1954 0 Apr. 6, 1954 to May 11, 1934 0 May 11, 1934 to May 25 j 1934 0 May 25 y 1954 to June 8, 1934 1,0 June 8, 1934 to June 22, 1954 1.0 June 22, 1954 to July 7, 1934 0 July 7, 1934 to July 20, 1954 0 TABLE XXIV SESSILE ORGANISMS DEPARTURE BAY Infestation* Area 261 sq> cm. Date Balanus Mytllus Bryozoa Serpulids Oct. 4, 1931 to Noy. 4, 1951 0 0 0 0 Nov. 4, 1931 to Nov. •18, 1951 S 0 0 0 0 Nov. 18, 1931 to Dec. 2, 1951 S 0 0 0 0 Dec. 2, 1931 to Dec. 16, 19515£ 0 0 0 0 Dec. 16, 1931 to Dec. 50, 1931s 0 0 0 0 Jan. 1, 1932 to Jan. IS, - • • St 1932 0 0 0 0 Jan. 13, 1932 to Jan. 27, 1952s 0 0 0 0 Jan. 27, 1932 to Feb. 10, 1932s 0 0 0 0 Feb. 10, 1952 to Mar. 9* 1952s 0 0 0 0 Mar. 9, 1932 to Mar, 24, 1952s 5.2 0 0 0 Mar. 24, 1952 to Apr. 6, 1932s 0 0 0 0 Apr. 6, 1932 to Apr. 21, 1932s 0 0 0 0 Apr. 21, 1932 to May 4* 1932s 0 0 0 0 May- 4, 1932 to May 18, 1932s 0 0 0 0 May 18, 1932 J ;o June L4, 1932s 150.0 0 5.2 0 June 14, 1932 to Aug. 2, 1932* 0 0 0 0 Aug. 2, 1932 to Sep. 2, 1932s 0.6 5.4 0 0 Sep. 2, 1932 to Oct. 4, 1932 s 5.2 0 0 0 Oct. 7, 1932 to Dec. 7, 1932s 5.0 0 0 0 Dec. 4, 1932 to Feb. 4, 1935 s 0 0 0 0 Feb. 2, 1935 to Apr. 4, 1955s 255.0 0 0 0 84 TABLE XXIV (continued) SESSILE ORGANISMS DEPARTURE BAY Infestation* Area 261 sq.* cm* Date Balanus Mytilus Bryozoa Serpulids Apr* 2, 1933 to May 2, 1935s 670.0 0 0 0 May .; 4, 1933 to June 15, 1955s 870*0 0 0 0 May 4* 1933 to June 4, 1953KX 145.0 0 136.0 0 June 4, 1933 to June 29, 1955 s s 790*0 19.0 140 0 June 29, 1933 to July 8, 1935 - - - -July 8, 1933 to Aug. 8, 1955# 7*0 100,0 0 0 Aug. 8, 1935 to Sep. 6, 1955^ 0 127.0 0 0 Sept; 6, 1933 to Oct. 7, 1955 - - - -Oct* 7, 1955 to Nov. 7, 195 2*0 4.0 9 0 Nov* 7, 1935 to Dec* 4, 1953s 0 0 0 0 Dec. 4, 1955 to Jan* 4, 1954S 0 0 o 0 0 Jan. 4, 1954 to Feb. 4, 1934 - - -.' -Feb* 4, 1934 to Mar. 4, 1934H 0 0 0 0 Mar* 4, 1954 to Apr. 4, 1934 s 5 60.0 8.0 42*0 0 Apr* 4, 1934 to May 4, 1934 S S 45.0 0 ' 111,0 0 May 4* 1954 to June A 1934# 457.0 4.0 0 0 June 4, 1934 to July 6, 1934# 0 4*0 37*0 0 July 6, 1954 to Aug. 6, 1934# 0 10.0 0 0 Aug. 9, 1934 to Sep. 1, 1954** 5.0 325.0 29.0 1*0 Bottom ^Surface § 8 feet from bottom 85 TABLE XXV SESSILE ORGANISMS VANCOUVER, GORE AVE. Depth - zero tide level (10 feet from bottom) Infestation. Area 261 sq.. cm. Balanus Mytilus Bryozoa Date Oct. 14, 1931 to Nov, •.,'=4, 1931 Nov. 4, 1931 to Nov* 18, 1931 Nov, 18, 1931 to Dec. 5, 1931 Dec. 3, 1931 to Dec. 17, 1931 Dec. 17, 1931 to Dec. 31, 1931 Dec. 31, 1931 to Jan. 13, 1932 Jan* 13, 1932 to Jan. 27, 1932 Jan. 27, 1932 to Feb. 10, 1932 Feb* 10, 1932 to Feb* 27, 1932 Feb. 27* 1932 to Mar* 9, 1932 Mar* 9, 1932 to Mar. 19, 1932 Mar. 19, 1932 to May 10, 1932 May 10, 1932 to May 21, 1952 May 21, 1952 to June 4, 1952 June 4, 1952 to June 18* 1952 June 18, 1952 to July 2, 1952 July 2, 1952 to July 16, 1952 July 16, 1952 to July 50, 19 52 July 50, 1952 to Aug. 15, 1952 Aug. 15, 1952 to Aug. 27, 1952 Aug. 27, 1952 to Sep. 10, 1952 0 0 0 0 0 0 0 0 0 0 0 present 0 0 0 0 0 1*0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 2*0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 86 TABLE XXV (continued) SESSILE ORGANISMS VANCOUVER, GORE AVE. Depth - zero tide level(10 feet from bottom) Infestation* Area 261 sq. cm. Date Balanus Mvtilus i3.ryo7.na Sep. 10, 1952 to Sep* 30, 1932 - - -Oct* 1, 1952 to Oct* 15, 1932 0 0 0 Oct. 15, 1952 to Oct. 29, 1932 0 0 0 Oct. 29, 1952 to Nov. 12, 1932 0 0 0 Nov, 12, 1952 to Nov* 26, 1932 0 0 0 Nov. 26, 1952 to Dec. 10, 1932 0 0 0 Dec. 10, 1952 to Dec. 26, 1932 0 0 0 Dec* 26* 1952 to Jan. 7, 1935 0 0 0 Ian. 7, 1955 to Jan* 21, 1935 0 0 0 Jan, 21, 1955 to Eeb* 4* 1955 0 0 0 Eeb. 4, 1933 to Eeb. 18, 1933 0 0 0 Eeb, 18, 1955 to Mar, 4, 1955 0 0 0 Mar, 4, 1935 to \"Mar* 18, 1933 0 1*0 6 Mar, 18, 1955 to Apr* 10, 1953 0 0 0 Apr* 10, 1955 to Apr* 24, 1935 0 0 0 Apr. 84, 1955 to June 10, 1953 0 0 0 June 10, 1933 to June 24, 1953 0 4*0 0 June 24, 1955 to July 8, 1935 0 0 0 July 8, 1935 to July 22, 1955 0 6*0 0 July 22, 1955 to Aug. 5, 1933 1*0 12.0 0 Aug* 5» 1955 to Aug* 19, 1955 0 15.0 0 TABLE XXV (continued) SESSILE ORGANISMS VANCOUVER, GORE AVE, Depth - zero tide level (10 feet from bottom) • Infestation, Area 261 so, cm. Date Balanus Mytilus Bryozoa Aug, 19, 1933 to Sep, 2, 1933 0 6.0 0 Sep, 2, 1933 to Sep. 16, 1933 1.0 4.0 0 Sep, 16, 1933 to Sep, 30, 1933 1.0 2,0 0 Sep* 30, 1933 to Oct, 14, 1933 0 1.0 0 Oct, 14, 1933 to Oct. 28, 1933 0 0 0 Oct, 30, 1933 to Nov, 13, 1933 0 0 0 Nov* 13, 1933 to Dec, 1, 1933 0 0 0 Dec b 1, 1933 to Dec, 16, 1933 0 0 0 • Dec. 16* 1933 to Jan. 2, 1934 0 0 0 Jan. 2, 1934 to Jan, 13, 1934 0 0 0 Jan. 13, 1934 to Feb. 2, 1934 9 0 0 Feb. 2, 1934 to Feb. 16, 1934 0 0 0 Feb. 16, 1934 to Mar* • B» 1934 0 0 0 Mar. 6, 1934 to Mar, 24, 1934 0 0 0 Mar* 24, 1934 to Apr. 9, 1934 3.0 0 0 Apr. 9, 1934 to Apr, 23, 1934 0 0 0 Apr. 23, 1934 to •May 19, 1934 0 1,0 1.0 TABLE XXVI SESSILE ORGANISMS CRESCENT Depth. - zero tide level (one foot from bottom) Infestation* Area 261 sq> cm. Date Balanus Bryozoa Sep. 1, 1932 to Oct. 1, 1932 14.3 0 Oct* 1, 1932 to Oct* 31, 1952 0 0 Oct. 31j 1952 to Nov* 50, 1952 0 0 Nov. 50, 1952 to Dec* 50* 1952 0 0 Dec* SO, 1952 to Jan. 30* 1935 \"0 0 Jan, 50* 1955 to Feb. 28, 1955 0 0 Feb* 28, 1955 to Mar* 50, 1955 0 0 Mar. 30* 1955 to Apr* 50, 1955 78.0 0 Apr. 50, 1955 to May 50, 1955 141*0 0 May 50, 1955 to June 50, 1955 555.0 5.9 June 30, 1935 to July 50, 19 53 0 0 July 30, 1935 to Aug* 50* 1955 5.5 0 Aug* 50, 1955 to Sep. 30, 1935 0 0 Oct, 1, 1955 to Nov* 16, 1953 157.0 0 Nov. 16, 1955 to Dec. 16, 1955 250.0 0 Dec, 16, 1955 to;Jan. 16* 1954 0 0 Jan. 16, 1954 to Mar. 20, 1954 18.2 0 Mar. 20, 1954 to Apr. 16, 1954 210.0 0 Apr. 16, 1954 to May 16, 1954 170.0 0 TABLE XXVII SESSILE ORGANISMS FRINGE RUPERT Depth - 2 feet from bottom Infestation. Area 261 sq. cm. Date Balanus Mytilus Bryozoa Serpulids June 29, 1932 to July 20, 1932 0 0 4*4 5.7 July 20, 1932 to Aug. 5, 1932 5.7 0 1.9 0 Aug. 3, 1932 to Aug. 17, 1932 7.2 1.5 1.0 0 Aug. 17, 1932 to Aug. 51, 1932 3© 3 1.5 0 0 Aug. 31, 1S32 to Sep, 13, 1932 2*6 0 0 0 Sep. 13, 1952 to Sep. 28, 1932 0 0 0 0 Sep. 28* 1932 to Oct. 12* 1932 0 0 0 0 Oct. 12* 1952 to Oct. 25, 1932 0 0 0 0 . Oct. 25, 1952 to Nov* 10, 1952 0 0 0 1.0 Depth - 2 feet from surface Mar. 1, 1954 to Apr. 2, 1954 0 0 0 0 Apr. 2, 1954 to July\" 3, 1954 520*0 78*0 0 0 July 3, 1954 to Aug* 1, 1954 51.0 2.6 5.9 2.6 90 TABLE XXVIII SESSILE ORGANISMS SHANNON BAY, MASSETT INLET Depth - 14 feet from bottom (zero tide level) Infestation. Area 261 sq. cm. Date Balanus Mytilus Nov. 3, 1933 to Nov, 17, 1955 0 0 NOV. 17, 1933 to Dec* 1, 1955 0 0 Dec. 1, 1933 to Dec* 15, 1953 0 1*0 Dec. 15, 1933 to Dec. 29, 19 35 0 1*0 Dec. 29, 1933 to Jan* 18, 1934 0 0 Jan. 12, 1934 to Jan* 26, 1954 0 1*0 Jan. 86, 1934 to Feb. 9, 1934 0 0 Eeb, 9, 1934 to Feb. 26, 1954 0 0 Feb. 26, 1934 to Mar* 12, 1934 0 0 Mar. 12, 1934 to Mar. 26, 1954 0 1*0 Mar.- 26, 1934 to Apr, 9* 1934 0 1*0 Apr. 9, 1934 to Apr, 25, 1954 0 2,0 Apr* 23, 1934 to May 7, 1934 1*0 0 May 7, 1934 to May 21, 1954 16*0 0 May 21, 1954 to June 4* 1954 0 0 June 1934 to June 18, 1954 2,0 0 June 18, 1954 to July 2, 1954 3,0 66,0 July 1934 to July 17, 1934 57*0 0 July 17, 1954 to July 51, 1934 600*0 90.0 Table XXIX vertical distribution of the infestation by Bankia DEPARTURE BAY Date of Exposure Counts per unit area of 261 sq, cm. and unit time of one month. July 8 to August 8, 1935 October 7 to Nov, 7S 1955 November 4 to Dec, 4, 1955 February 4 to March 4, 1954 . March 4 to A p r i l 4, 1954 May 4 to June 4, 1954 July 7 to August 9, 1954 August 9 to Sept, 1, 1954 Float 5,4 9,5 17,0 2,2 0,8 1*7 © 0-tide l e v e l \" Bottom 0 0 25,4 4.2 54.6 1,0 50.6 258,0 51.0 0.8 7.5 28,0 525,5 0-tide level - 8 feet from bo ttom. 92 T A B L E Vertical distribution of the infestation by Limnoria D E P A R T U R E B A Y Date of exposure July 8 to August 8 , 1 9 3 3 October 7 to November 4 , 1 9 3 3 November 4 to December 4 , 1 9 3 3 February 4 to March 4 , 1 9 3 4 March 4 to April 4 , 1 9 3 4 May 4 to June 4 , 1 9 3 4 June 4 to July j>» 1 9 3 4 July 7 to August 9 , 1 9 3 4 August 9 to September 1 , 1 9 3 4 . Counts per unit area of 26l 8q..cm. and unit time of one month. Float Zero tide level* Bottom. G 0 0 0.8 1.7 72.0 1.7 0 3 . 1 6.6 0 1 4 . 4 7 - 3 0 0 4.1 178.0 33*0 1 9 . 0 I8.3 78.0 32.0 0 12.0 32.0 76.-2 3 7 . 3 4 2 2 . 3 1 Zero tide level = 8 feet from bottom. 93 T A B L E UXI V e r t i c a l d i s t r i b u t i o n o f the incidence of Balanus DEPARTURE BAY Date of exposure March 4 to A p r i l 4,• F l o a t 1934 31.0 May 4 t o June 4, 1934 300.0 August 9 to September 1 , 3*0 1934 February 2 to A p r i l 4, 1933 0 J u l y 8 to August 8 9 0 Count per u n i t area of 2 6 l sa.cm. and u n i t time of one month. Zero t i d e l e v e l bottom 0 0 300.0 3.0 5 .0 0 : 93.0 100.0 3 0 336.0 403.0 103.0 TABLE XXXII Vertical distribution of the incidence of Mytilus DEPASTURE BAY Count per unit area of 2 6 l sq.. cm. per unit time of one month. Date of exposure JtFloat July 8 to August 8, 1933. 17.0 October 7 to Ixovemfeer 4, 1933. 0 March 4 to Ap r i l 4, im-... 6.7 May 4 to June 4, 1934. 0 June jj to July 6, 1934. 0 July j? to August 6, 1934. 3 6 . 0 August 9 to September 1, 1934. 323.0 Zero tide level\" Bottom 3 2 . 0 3 . 0 0 3 . 0 4 . 0 10.0 3 3 . 0 16*0 0 0 0 0 0 0 383 107 16 1 Zero tide level • 8 feet from bottom. 95 TABLE X X X I I I V e r t i c a l d i s t r i b u t i o n o f t h e i n c i d e n c e o f M e m b r a n i p o r a DEPARTURE BAY Count p e r u n i t a r e a o f 26l sq.. cm. p e r u n i t t i m e o f one month. Dat e o f e x p o s u r e M a r c h 4 to A p r i l 4 1934. June 4 t o J u l y 6 1934. J u l y 3 t o A u g u s t 6 1934. F l o a t 3 3 . 0 0 16.0 A u g u s t 9 t o September 1 29.0 1934. Z e r o t i d e l e v e l * B o t t o m 0 0 40.0 0 0 0 0 0 80.0 40.0 * Z e r o t i d e l e v e l - 8 f e e t f r o m b o t t o m . 96 CMBRAL DI5CUSSI0H BMSJA Th© southern stations of Vancouver island are characterized by a relatively light but almost continuous Bankia infestation. There is no indication of seasonal peaks in the intensity of attack and l i t t l e variation in i t s proportion from year to year. It i s at these stations that open sea conditions obtain. Departure bay on the east coast of Vancouver island, which re-presents a body of water influenced by river discharge, i s subjected to an attack of moderate intensity® Infestation may be practically continuous as was the case in 1934. Usually, however, -there ore decided peaks of intensity during spring and f a l l . Such peaks are clearly shown in 1932 and 1953. White (1929) reports for the year 1927 a heavy spring infestation in March and for 1926 a somewhat lighter f a l l infestation which was confined to October. It i s ap-parent from the present investigation that the infestation periods of both spring and f a l l may be of much longer duration than those previously reported and that the f a l l infestation i s much heavier than that occurring in the spring*, For Vancouver harbour, Crescent and Prince Rupert the results are inconclusive. Infestation in Vancouver harbour appears to bs almost lacking, It is possible however, in view of heavy infestation reported by Townsend as having occurred in 1929, that hydrographic conditions during the period of investigation may have been unusual© It i s recommended that in future, several sites be investigated and 97 that more than one level be included in -fee study® At Crescent the light infestation cannot be accounted for by reference to such hydro-graphic data as have been obtained© The almost complete absence of Bankia from piles and other wooden structures indicates that the con-dition obtaining at the site and level investigated was representative. In Prince Rupert harbour the investigation has not been extended long enough for the results to be interpreted satisfactorily. The most devastating infestation by Bankia took place at Masset inlet, Q.ueen Charlotte islands, Fraser (1925) reported that the areas formed by the inlets adjacent to Queen Charlotte islands to be the most favourable for Bankia growth. In Shannon bay for the period October 15 to November 12, 1931, on an area of 261 square centimeters, there ware 1,880 entries of Bankia. The minimum monthly infestation for either station was 5. It i s d i f f i c u l t to account satisfactorily for the variations noted in intensity and time. Where open sea conditions obtained a light infestation was experienced. A heavy infestation by Bankia was recorded for Masset inlet where the sea water i s diluted by fresh water. The temperatures for these areas were between 3° and 16° C. The sa l i n i t y averages for the three stations at the south end of Vancouver island were about the same, the spread being from 29 to 32 parts per mille. The salin i t y at zero tide level at Shannon bay varied from 17 to 22 parts per mille. Thus there would seem to be a relation between the heavy infestation by Bankia and a lowered sa l i n i t y range from 17 to 22 parts per mille, when the temperature limits are from 3° to 12° C. An intermediate infestation by Bankia occurred at Departure bay. The sa l i n i t y range at Departure bay was midway between that for William Head and Shannon bay. The temperature range at Depar-ture bay was greater than that recorded for the stations at the south end of Vancouver island and at the Queen Charlotte island in-' vestigated. That the intensity of the infestation by Bankia at Departure bay is related to the hydrographic data obtained for this area can not be substantiated, since the hydrographic data obtained for Vancouver and Crescent are similar to that obtained for Depar-ture bay, yet the infestation at the latter place was consistently more intense than that found at the former sites. Certainly the dominant factor favourable to the incidence of Bankia larvae does not seem to be one of high salinity as contended by White (1929). While the main infestation by Bankia occurred at Shannon bay and Departure bay when the temperature ranged from 7° to 12° C., infes-tation of destructive intensity by Bankia took place at the latter station during the month of August 1934 when the average temperature for the month ranged from 17.4° to 19.1° C. Johnson and Miller (1935) suggest that 7° to 12° C 0 represents the temperature range of effec-tive breeding of Bankia setaeea i n Puget sound, and that as long as the temperature of the water is either above or below these limits, no attack of destructive intensity i s to be expected. Infestation of experimental blocks exposed concurrently at three levels at Departure bay indicate the necessity of using at least two levels for each site to be investigated in the future. For Departure bay these levels should be surface (float) and bottom. Infestation took place at the three levels investigated* There was no significant difference between the attack at the surface and at the zero tide level. The attack at the bottom however, was de-cidedly greater than that at the two higher levels* In certain i n -stances the surface experimental block only'was attacked. In other eases, the attack was restricted to the lower levels. It is possible that for short intervals, one to two months, a Bankia attack might be dangerous t o inadequately protected wooden hulls and to log booms but not to unprotected piling below the zero tide level. GENERAL DISCUSSION XJMxfOBIA The infestation by Limnoria occurred at a l l times of the year at a l l the areas investigated except at Crescent and Victoria, at which stations activity ceased during the winter months. Infestation of destructive intensity occurred at William Head, Esquimalt, Departure bay, Crescent, Prince Rupert and Shannon bay. The attack at Victoria, Vancouver and Buckley bay was comparatively lig h t , The greatest activity was that noted for Departure bay and Esquimalt, The hydrographic data for the three stations at the south end of Vancouver island are similar. The infestation at William Head and at Esquimalt i s much greater than that recorded for Victoria, At Crescent there was a cessation of the activity of Limnoria during the winter months. At Departure bay, where the average salinity and temperature ranges are about the same as those for Crescent, the i n -tensity of the Limnoria infestation lessened during the winter months but by no means ceased. Thus there does not seem to be a relation-ship between the intensity of infestation and the hydrographic data obtained. Eraser (1925) found that no data available would account for the nature of the distribution and the variation in the extent of Limnoria infection. The maximum infestation in the winter months occurred at Depar-ture bay. The count for December 1951 was 360 (bottom) while the sur-face temperature averages varied from 6° to 8° C. The maximum during the spring was during March, 1952, 565 (hottorn) while the temperature averages at three feet from the surface ranged from 6°to 13° C, The .greatest activity during the summer, 220 (bottom) was for the inter-val July 8 to August 8, 1935® The temperature averages taken at three feet from the surface were between the limits 16° and 19° C, The results of the investigation of the vertical distribution of the incidence of Liimioria point to the fact that the attack is concen-trated at the bo ttom. The average infestation at the surface however, of blocks continuously submerged was greater than that at the zero tide level. The contention that in the study of the incidence o f marine wood borers, more than one level be investigated is supported by the infestation data recorded for Limnoria, Since the test blocks could not be examined immediately after they were taken from the water, no data were procured with regard to the breeding habits of Limnoria. Fraser (1925) noted for British Columbia that the various stages of development were to be found from June to September, Eofoid (1927) reported for San Francisco bay that gravid female Limnoria were to be found at a l l times of the year, SESSILE ORGANISMS Balanus The incidence of Balanus was restricted to spring, summer and f a l l months. The settlement was most extensive at Departure bay, Crescent, and at tie three northern stations, Prince Rupert, Shannon bay and Buckley bay. Spring and f a l l maxima of incidence were demonstrated at Crescent, Johnson and Miller (1955) in their studies at Friday harbour, found two maxima of settlement of Balanus glandule Darwin, i n May and Sep tember. In general, there would seem to be a relation between the lowered salini t y and the i n t e n s i t y of incidence of Balanus. Incidence was recorded for the three levels investigated. The settlement at the surface and at the zero tide l e v e l were s i g n i f i c a n t l y greater than that at' the bottom. Mytilus Incidence of Mytilus edulis occurred at Departure bay, Vancouver, Prince Rupert and Shannon bay. No incidence of larvae was recorded for Crescent yet mussels here are quite pl e n t i f u l . The fact that there were no experimental blocks at the surface might account for the failure to obtain mussel set at this station. Settlement of mussels during the spring,summer and f a l l months was sporadic. The only record of an incidence for the winter months was that for Shannon bay. The main incidence occurred in July and August. The heaviest settlement of larvae took place at Departure bay and Shannon bay. The suggestion i s put forth that there is a relation between the intensity of the incidence of Mytilus edulis and a lowered salinity. Incidence occurred at the three levels investigated at Departure bay. The s t r a t i f i c a t i o n was quite distinct, the main settlement having taken place at the surface (float)„ 103 Bryozoa Tae Bryozoans that settled on the test blocks belonged to the family Electrinidae. At Departure bay the chief species represented was Membranipora v i l l o s a Hincks. Encrusting Bryozoans settled on the experimental blocks exposed at William Head, Esquimalt, Departure bay, Vancouver, Crescent and Prince Rupert® Incidence of Bryozoa took place in the warmer months of the year. Ho incidence occurred during December, January and February. The heaviest settlement of Bryozoa was at Departure bay0 Totals for the incidence of Bryozoa for four months at the levels surface (float), zero tide level and bottom are 80, 40 and 0 respec-tively. The species represented was chiefly Membranipora v i l l o s a which form 0*Donoghue (1927) found so abundantly on kelp within the bay. COMPARISON OF INFESTATION BY BANKIA AND LIMNORIA The, infestation of wood by the marine boring crustacean Limnoria presents a decided contrast to that of the mollusc borer Bankia. The latter must of necessity attack new material while in the free swim-ming larval veliger stage, while the former seems to attack non infec-ted wood as the adult© Limnoria infestation was more extensive than that by Bankia at nearly a l l the stations studied, Masset inlet being a conspicuous exception. The heaviest limnoria attack and the second greatest Bankia attack occurred at Departure bay* During the f i r s t year of 104 the investigation at Departure bay, the Liimioria attack v;as much heavier than that of Bankia, During the ensuing 22 months, attack ,rof the former diminished while that of the latter increased. Infestation by both borers at Victoria and Vancouver was never more than 20 organisms per experimental block per month. At William Head, Esquimalt, Crescent and Prince Rupert, Limnoria effected a considerable infestation while that of Bankia was insig-nificant in comparison. The most devastating infestation by Bankia occurred at the Masset inlet stations, Shannon bay and Buckley bay. The attack by Limnoria at i t s greatest was numerically only one fortieth of the greatest caused by Bankia, COMPARISON OF INCIDENCE 0? BORING- AND SESSILE ORGANISMS The boring organisms, Bankia and Limnoria tended to concentrate at the bottom while the sessile organisms Balanus, Hytilus and encrust-ing Bryozoans tended to concentrate at the surfaces Since experimental blocks were not placed at more than one level except at the one station, the geographic comparison of the intensity of the incidence of the boring and sessile organisms does not seem to be feasible. Bankia infestation was light at the southern end of Vancouver island. There was no indielation of seasonal peaks in the intensity of attack. A moderate Bankia attack occurred at Departure bay, on the east coast of Vancouver island. Attack may be continuous or sporadic. Usually there are decided peaks in the spring and f a l l , the latter being the more important. The duration of the f a l l and spring attacks was found to be longer than that reported by White (1989). Results of Bankia studies carried on at Vancouver, Crescent and Prince Rupert are inconclusive. For Vancouver harbour, It i s recommended that in future, several sites be investigated and that more than one level be included in the study® Heaviest infestation by Bankia took place at Buckley bay and Shannon bay, Masset inlet, Queen Charlotte islands. In Shannon bay for the period October 15 to November 12, 1931, on an area of 261 square centimeters, there were 1,830 entries of Bankia. The minimum monthly infestation for either station was 5. A comparison of Bankia infestation and the hydrographic con-dition that obtains at the southern end of Vancouver island and at Masset inlet, Queen Charlotte islands indicates that a lowered salinity range of from 17 to 22 parts per mille when 106 the temperatures are from 5° to 12° 0. Is accompanied by a heavy infestation. 6o No relation between Bankia infestation and hydrographic con-ditions could be derived from the data obtained for Departure bay, Vancouver harbour5 Crescent and Prince Rupert harbour, 7. Results obtained for Departure bay point to the fact that the dominant factor favourable to infestation by Bankia i s not one of high s a l i n i t y as contended by White (1929). 8. While the main infestation by Bankia occurred at Shannon bay and Departure bay when the temperature ranged from 7° to 12° C., infestation of destructive intensity took place at the latter station during the month of August, 1934 when the average tem-perature ranged from 17,4° to 19.1° C. 9. Infestation by Bankia of experimental blocks exposed concurrent-l y at three levels at Departure bay indicate the necessity of using at least two levels for each site to be investigated in the future. I0o Bankia infestation occurred at the three levels investigated. Attack at the bottom was greater than that at the surface or at the zero tide level. No significant difference in attack was obtained between that noted for the surface and zero tide level. . 11. Limnoria infestation occurred at a l l times of the year in a l l the areas investigated except Crescent and Victoria, at which 107 stations activity ceased during the winter months, 18. Infestation by Limnoria of destructive intensity occurred at William Head, Esquimalt, Departure bay, Crescent, Prince Rupert and Shannon bay, The attack at Victoria, Vancouver and Buckley bay was comparatively light. The greatest activity was that noted for Departure bay and Esquimalt, 13. Variations in the time and intensity of Limnoria infestation could not be accounted for by the hydrographic data obtained. 14® Infestation by Limnoria of destructive intensity occurred at temperatures from 6° to 19° C. 15. The heaviest attack by Limnoria occurred at the bottom; attack at the surface was greater than at zero tide level. 16. Settlement of barnacles occurred in spring, summer and f a l l months. Incidence was most extensive at Departure bay, Crescent and at the three northern stations, Prince Rupert, Shannon bay and Buckley bay. Spring and f a l l maxima of incidence occurred at Crescent. 17. Settlement of mussels during the spring, summer and f a l l months was sporadic. The only record of an incidence for the winter months was that for Shannon bay. The principal incidence oc-curred during July and August. The heaviest settlement of l a r -vae took place at Departure bay and Shannon bay* 108 188 Encrusting Bryozoans s e t t l e d on experimental blocks exposed at William Head, Esquimalt, Departure bay, Vancouver, Crescent and Prince Rupert 0 Incidence took place during the warmer months of the year* 19o Incidence of serpulids occurred at Departure bay end Prince Rupert* 20, Results of s t r a t i f i c a t i o n studies made at Departure bay show that the principal settlement of barnacles, mussels (Mytilus edulis) and encrusting Bryozoans, occurred at the surface (float)« Settle-ment was least on the blocks exposed at the bottom, 21, Limnoria infestation was more extensive than that by Bankia at nearly a l l the stations studied, Masset inlet being a conspicuous exception* The heaviest Ljjmxoria attack and the second greatest Bankia attack occurred at Departure bay, 22* Results for Departure b a y showed that the boring organisms, Bankia and Limnoria tended to concentrate at the \"bottom while the s e s s i l e organisms, barnacles, mussels and encrusting Bryo-zoans tended to concentrate at the surface. 109 ACEGTOYiXSPavSNTS The necessary financial assistance for this investigation was extended hy the Biological Board of Canada, the Department of Botany, University of B r i t i s h Columbia and by my parents. Working f a c i l i t i e s were provided by the Biological Board of Canada, shellfish investi-gations (Pacific) and by the Department of Botany, University of British Columbia, I am indebted to Dr, C, McLean Fraser, head of the Department of Zoology, University of B r i t i s h Columbia, for his consistent and sym-pathetic interest in this investigation. Thanks are also due to Dr, W.A. Clemens, Director, Pacific Biological Station, Dr* C.B., Elsey in charge of shellfish investigations at the Pacific Biological Station and to Dr. A.H. Hutchinson, head of the Department of Botany, Univ-ersity of B r i t i s h Columbia, for their assistance and many courtesies and to Dr. J.L, Hart, Pacific Biological Station, for his helpful criticisms. Acknowledgment i s made to Mr, J.L. McHugh for preparation of the charts used in this work and to Dr. F. Dickson of the Department of Botany and to Professor G.J. Spencer of the Department of Zoology, University of B r i t i s h Columbia for photographic assistance. Special acknowledgment is due to those who exchanged the experim-ental blocks and procured the hydrographic data. This investigation would have been impossible of execution without the consistent assis-tance of Mr. Ira Cornwall (Quarantine Station, William Head); Mr. Edward Cooke(Esquimalt and Victoria); Dr. C.R. Slsey, Dr. N.M. Carter 110 and Mr. T.P. Tully (Pacific Biological Station, Departure bay)| Mr. A, Oldershaw and Mr. J. Christopherson (Crescent); Mr. H. Beard and Mr. J.R. Towns end (Vancouver); Dr. N.M, Carter and Dr. H.N. Brocklesby (Fisheries Isperimental Station, Prince Rupert); Dr. A.L. Pritchard (Masset i n l e t ) . I l l CITATIONS At?/cod, and Johnson, A , A , 1924® Marine structures, their deterioration and preser-vation. National Research Council, Wash., B.C. pp. 1-534, 169 f i g . Bartsch, P. 1924© A monograph of the American shipworms. Bull, U.S. National Museum, 122, 51 pp., 57 pis., 1 f i g . in text. Clemens, W.A. 1955, A check l i s t of the marine fauna and flora of the Canadian Pacific Coast. Nat, Res. Coun, Can. Coe, W.R, 1952, Season of attachment and rate of growth of sedentary marine organisms at the pier of the Scripps Institution of Oceanography, La Jo11a, California. Bull, Scripps Inst, Ocean., Tech. ser., 3, (5), pp. 57-86, pis, 1-6, 5 f i g , in text. Coker, R.E, 1925. Breeding habits of Limnoria at Beaufort. N.C. Jour. Elisha Mitchell Sci. Soc, 59, pp. 95-100. Field, Irving A. 1922, Biology and economic value of the sea mussel, Mytilus edulis. Bull. U.S. Bur. Fish., 58, pp. 127-259, 150 f i g . Fish, Charles J. 1925. Seasonal distribution of the plankton of the Woods Hole region. Bull. U.S. Bur. Fish., 41, pp. 91-179, 77 f i g . 112 Fraser, C. McLean, 1925« Marine wood borers in Br i t i s h Columbia waters, Trans, Hoy, Soc, Can. Ser. 5, 17, (5), pp, 21-28, Fraserj C. McLean. 1925, Marine wood borers in Br i t i s h Columbia waters, II Trans. Hoy. Soc. Ser. 5, 19, (5), pp. 159-167. Gray el ey, F,H. 1909, Polyehaet larvae, L i v. Mar. Biol. Com. Memoir 19, pp. 1-179, 4 pis. Henderson, Jean T. 1924, The gribble: a study of the distribution factors and the lif e - h i s t o r y of Limnoria lignorum at St. Andrews, XT.B. Contr. Can. Biol. 2, (14), pp. 507-525, 2 pis. Johnson, Martin W. and Miller, Robert C, 1935. The seasonal settlement of sliipworms, barnacles, and other wharf-pile organisms at Friday harbour, Washington. Uhiv. Wash. Pub. Ocean. 2, (1), pp. 1-18, 1 f i g * Kbfoid, C.A. 1921. The marine borers of the San Francisco Bay region. Report on the San Francisco Bay Marine P i l i n g Survey, 1, pp. 23-61, 36 pi s o 1 f i g . in text. •Kbfoid, C.A. and Miller, Robert C. 1927. Marine borers and their relation to marine construction on the Pacific coast. Final report of the San Francisco Bay Marine Piling Committee, (San Francisco, published by the Committee), pp. 188-545, f i g . 68-141. 113 Lucas, C0C. and Hutchinson, A.Ho 1927. A bio-hydrographical investigation of the sea adjacent to the Eraser- river mouth® Trans. Roy. Soc Can, Ser. 5, 31, (5), pp. 485-520. O'Donoghue, C.H. 1926, Observations on the early development of Membranipora v i l l o s a Hincks. Contr. Oan. Biol, 3, (8), pp, 247-265, p i . 1. Sigerfoos, Charles P. 1908. Natural history, organization, and late development of Teredinidae, or shipworms. Bull, U.S. Bur. Fish., 27, pp. 191-251, pis . 7-21. Visscher, J. Paul, 1928. Nature and extent of fouling of ships' bottoms.nBull. U.S. Bur. Fish., 45, pt. 2, pp. 195-852, 40 f i g , in text. Wallace, N.A. 19190 Isopoda from the Bay of Fundy. Univ. Toronto Studies. V/hite, F.D. 1929. Studies on marine borers. III. A note on the breeding season of Bankia (ffylotrya) setaeea in Departure bay, B.C. Contr. Can. Biol. 4, (5), pp. 19-25, 1 f i g . TABLE XXXI? HYDROGRAPHIC DATA Sea water samples taken at 6 WILLIAM HEAD foot l e T e l from surface Date Time 0 Temp. °/oo 01/kg Sep . 21, 1952 9:00 10.4 17.05 Sep. 24 10 **00 11.6 17.25 Sep, 27 10:00 10.9 16.92 Sep, SO 10:00 10.6 17.16 Oct. 5 14:00 10*0 17.57 Oct. 6 10:00 9*8 -17*45 Oct. 9 15:00 9.9 17.58 Oct* 12 ll:oo 10.0 17.24 Oct* 15 10 :00 9*8 17.48 Oct* 18 9500 9.4 17*51 Oct* 21 11:00 9.4 17.47 Oct. 24 10:00 9.4 17.40 Oct* 27 9:00 9.4 17:64 Oct. 50 10:00 9.5 17.66 WOT. 2 11:00 9.0 17.59 NOT* 5 12:00 8.9 17.40 NOT. 8 14:00 9.2 17.45 NOT. 11 11:00 9*0 17.59 NOT. 14 11:00 8.9 17.41 NOT. 17 11:00 9.5 17.40 NOT. 20 14:00 9.0 17.21 TABLE XXXXV (Continued) HTDROGHAPHIC DATA Sea water samples taken at 6 foot level from surface WILLIAM HEAD Date Time 0 Temp. 0, /oo Cl/kg Ebvo 25, 1952 10:00 8,6 17.24 HOT, 26 11:00 8.9 17,15 Nov, 89 14:00 8.9 17.27 Dec. 2 11:00 8,9 17.51 Dec. 5 14:00 8.6 17.54 Dec. 8 11:00 7.1 17.57 Dec. 11 10:00 7,7 17,99 Dec. 14 15:00 7.4 17.57 Dec. 17 10:00 7.8 17.25 Dec. 20 12:00 7,6 17 • 25 Dec. 25 11:00 7,6 17.50 Dec. 26 12:00 7.7 17.58 Dec. 29 10:00 7.6 17.27 Jan. 1, 1955 11:00 7.0 16.93 Jan. 4 14:90 7.6 17.27 Jan, 7 11:00 7,5 16.79 Jan. 10 14:00 7.6 17.13 Jan* 15 10:00 7.8 Jan. 16 11:00 7.1 17.09 Jan. 19 11:00' 6.5 17.13 Jan. 22 12:00 7.1 17.19 TABLE XXXIV( Continued) HTDROGPAPHIC DATA Sea water samples taken at 6 foot level from surface • WILLIAM HEAD Date Time C Temp. °/oo Cl/kg Jan. 25, 1933 14:00 7.1 17,29 Jan. 28 14:00 7.1 17.56 Jan. 31 11:00 6.7 17.26 Feb. 3 10:00 7.0 17. 21 Feb. 6 10; 00 6,8 17.08 Feb. 9 15:00 6.5 16.96 Feb, 12 11:00 6*7 17,28 Feb. 15 12:00 6*5 17.19 Feb, 18 14:00 7.0 17.52 Feb. 21 10 :oo 6.7 17.55 Feb, 24- 9:00 7*0 17.66 Feb. 27 13:00 7,0 17.55 Mar, 2 11:00 6*9 17*20 Mar, 5 11:00 6.8 17* 21 Mar* 8 14:00 7*0 17*19 Mar, 11 10:00 7.0 17.14 Mar* 14 10:00 7*1 17.21 Mar. 17 10:00 Mar* 20 11:00 7.1 17.28 Mar. 23 14:00 7.2 17.13 Mar* 26 10:00 7.5 17.09 TABLE XXXIV (Continued) HYDROGRAPHIC DATA Sea water samples taken at 6 foot level from surface • -WILLIAM HEAD Date Time C Temp. /oo Cl/kg Mar. 29, 1933 10 too 7,2 17.13 Apr, 1 10:00 7,0 17,20 Apr, 4 12:00 8,2 17.09 Apr, 7 11:00 7.3 17*11 Apr, 10 9:00 7.7 2J7 & 12 Apr, 13 10:00 7,8 ,17.34 Apr, 16 11:00 7.8 17,34 Apr, 19 10:00 8.0 17*55 Apr, 22 11:00 8.5 17*36 Apr, 25 10:00 8.3 17.55 Apr, 28 10:00 8,5 17.43 May - 1 10:00 8.3 17.43 May 4 9:00 8.5 17.26 lay 7 11:00 8,9 17*39 May 10 10:00 8.5 17.48 May 13 11:00 9.0 17,58 lay 16 13:00 9.2 17.41 May 19 9:00 8.9 17.39 May 22 14:00 9.3 17.32 May 25 10:00 9.2 17.59 May 28 10:00 9.9 17.34 TABLE XXXIV (Continued) -HYDROGRAPHIC DATA -Sea water samples taken at 6 foot level from surface • WILLIAM HEAD Date Time C Temp. /oo Cl/kg May 31, 1933 8:00 9.4 17.56 June 3 8:00 9.6 17.24 June 6 10:00 9.3 17.19 June 9 13:00 9.8 17.48 June 12 14:00 10,6 17,41 June 15 9:00 9,8 17.55 June 18 11.00 10.6 17.06 June 21 14:00 10.4 16.92 June 24 14:00 10.6 17,10 June 27 10:00 10.5 17.12 June 30 11:00 10,1 17.19 July 3 10:00 10.6 16.69 July 6 11:00 10.5 17.22 July 9 9:00 9,6 17.56 July 12 9:00 9,9 17.29 July 15 14:00 11.7 17.00 July 18 10:00 H i 1 16.52 July 21 10:00 16,62 July 24 10:00 11.1 16,94 July 27 10:00 10.6 17,09 July 30 10 too 10,6 16.81 TABLE XXXIV (Continued) .HYDROGRAPHIC DATA .Sea water samples taken at 6 foot level from surface , piLIAM HEAD Date Time 0 Temp. /oo Cl/kg Aug, 2, 1935 10 too H « X 16. 68 Aug, 5 10:00 10.6 17*11 Aug, 8 14:00 10.3 17.51 Aug, 11 10:00 10.4 17.37 Aug, 14 9:00 XX o 0 16,72 Aug, 17 9:00 XS@ 13 15*75 Aug, 20 10:00 XX© 8 16,63 Aug, 23 10:00 XX $ 2 16*73 Aug* 26 9:00 12.0 16.81 Aug, 29 9:00 11.0 16*77 Sep* 1 10:00 10,4 •17,10 Sep, 4 9:00 10.0 17,35 Sep, 7 15:00 10.6 17.37 Sep, 10 12100 10.9 17*39 Sep, 13 10:00 10*9 17.15 Sep. 16 10:00 10*4 16*94 Sep. 19 10:00 10.1 16.91 120 TABLE XXXIV(Continued) HYDROGRAPHIC DATA Sea water samples taken at' 6 foot level from surface WILLIAM HEAD C /oo Date Temp. Cl/kg September 22, 1953 9.37 17.41 25 9.37 17.59 28 9.76 17.20 October 1 10.11 4 10*0 17,41 7 10.0 17.10 10 9.8 16.96 ;15 10.5 16*77 16 10*2 16,65 19 9*48 16*97 22 9.0 17.40 25 9*4 17*36 28 9,2 16.99 51 8.9 17.22 November 5 8.9 17,26 6 8.8 17.22 9 8,8 16.99 12 8,9 16.69 15 8.9 16,55 18 M 17»20 21 8.5 17.45 121 , TABLE XXXLV. (Cont inued) HYDROGRAPHIC DATA Sea water samples taken at' 6 foot level from surface WILLIAM HEAD 0 /oo Lte Temp, Cl/kg 24, 1935 8,6 17,22 27 8, 5 17.30 50 8.3 17.65 5 8.1 17.32 6 8.0 17.27 9 8.1 16.26 12 7.7 16.57 15 7.8 17© 12 18 8.1 16.66 21 7.7 17.52 24 7,5 16.84 27 7.2 16.74 50 7,8 16.64 1, 1954 8.0 16.68 4 8© 2 16.74 .77 7.8 16,65 10 7.8 16,97 15 . 7.8 16.75 16 8.1 16.77 19 8,0 16.84 22 • . 7.5 16.25 122 •TABLE XXXIV (Continued) •HZDSOG-RiPHIC DATA •Sea water samples taken at' 6 foot level from surface .WILLIAM HEAD Date C Temp. /oo 01/kg January 25, 1934 7.7 16*73 28 8.0 16. 61 31 8.0 16.55 February 5 7*0 16,77 6 8.0 16.75 9 8,0 16,71 12 8. 2 16,88 15 8*2 16.88 . 18 8.1 16*84 21 8,0 16,84 24 8*1 16.77 27 8*2 16*69 March 2 8*1 16.79 5 . 7,7 16.63 8 8.1 . 16.84 11 7,8 16.83 14 7.8 16.87 17 8,6 16.92 20 8,8 16.95 . 2 3 8,2 17.06 26 8.6 16.77 TABLE XXXIV( Continued) .HYDROGRAPHIC DATA .Sea water samples taken at 6 foot level from surface A p r i l May .WILLIAM HMD 0 /oo ite Temp. Cl/kg 29, 1934 8. 8 16*69 1 7.8 16.85 4 8.4 17.12 7 8*9 17.11 10 8.8 16*99 13 9,0 17.00 16 9,0 17.22 19 9*6 17.19 22 9.5 17.05 25 9.5 16.93 28 10,0 16*89 1 9,2 17 <» 21 4 9,2 17.55 7 9,4 17.25 10 9,8. 17.05 13 10,5 16.91 16 9,8 17.00 19 10.1 16,76 22 10,7 16,82 25 10,7 16*69 28 10,5 16.77 51 9,5 17.06 •CABLE XXXIV (Continued) HYDROGRAPHIC DATA Sea water samples taken at' 6 foot level from surface WILLIAM HEAD 0 /oo Date Temp. Cl/kg .June 3, 1934 10.3 17.13 6 10.8 17.05 9 10.8 16.85 IS 10.8 17.09 15 10,6 16,93 18 10,8 16.93 21 11.3 16.65 24 12.5 16.58 27 10.4 17.26 50 11.3 17.30 July 3 11.2 17.57 6 11.9 16.92 9 10.8 16,75 12 10.4 17.50 15 10.7 17.15 18 10.9 17,12 21 11.5 17.03 24 11.8 17.13 27 11.8 17,30 30 10.4 17.43 TABLE XXXV( • HTDHOG-HAPHIC DATA . Sea water samples taken one fathom from surface ESQUIMALT HARBOUR Date Time C Temp. /oo 01/kg Foy. 4, 1935 15130 9.1 17.48 Nov. 12 16:30 9.1 16.75 UOY, 25 15:30 8,4 17,55 Dec. 9 15:00 8,0 17.24 Dec. 16 16:30 7.2 16.88 Dec. 25 15:50 7,2 17.05 Dec. 51 15:00 7.4 16. 62 Jan. 7, 1954 15:00 8.0 16.87 Jan. 21 15:30 8,0 16.58 Jan. 28 16:30 8,0 16.70 leb. 11 16:30 8,1 16.81 Feb. 18 ll:oo 8.3 16*95 Mar, 4 14:30 8.0 17,15 Mar. 11 16:50 9.1 16.84 Mar. 18 15:30 9.3 16.75 Mar. 28 15:45 9.2 16.80 Apr. 7 14:30 11,3 16.76 Apr. 15 16.'50 11.0 16*77 Apr. 28 15:00 12,2 16.58 May 12 15:00 12.5 16,93 May 20 16:45 15.2 16.87 s - sulphide contamination. TABLE XXXV(Continued) HYDROGRAPHIC DATA •Sea water samples taken one fathom from surface ESQUIMALT BARBOUR C /oo Date Time Temp. Cl/kg May 26, 1934 14:30 14*0 16,34 June 3 10:00 17.10 June 11 15:00 16,97 June 17 10:00 14.4 16,80 June 24 15:30 15.4 16.58 July 1 14:30 15 ® 1 17.04 TABLS XXXVI HYDRO GRAPHIC DATA Sea water samples taken, at depth of one fathom FEDERAL GOVERNMENT WHARF, VICTORIA HARBOUR Date Time C Temp. °/oo 01/kg Oct. 15, 19S5 16J00 10,0 16,56 Oct, 17 15:; so 9.3 16.46 Oct. 19 15550 9.4 16,80 Oct. 25 13J30 . 10.4 17.28 Oct. 24 15 5 50 10.3 16.82 Oct. 26 13530 10.2 17,55 Oct* 29 15 500 10.0 16,55 Oct. 51 13530 10.0 16,80 HOT* 2 13 550 10*5 16. 82 HOT. 5 13550 10.2 16,82 HOT. 6 13«30 10.2 16,84 NOT* 8 15 550 10.4 16.75 NOT. 10 15550 9.0 16*44 NOT. 11 16 550 9*0 16*20 NOT. IS 15 530 9.5 16,20 NOT. 15 15 550 9,0 16,45 NOT. 17 15530 9.1 16,96 NOT. 20 13 550 9.0 16.90 NOT* 22 13530 9,1 .17,02 NOT* 25 15 550 9.1 16.89 NOT* 24 13550 9,1 14,82 a - sulphide contamination TABLE XXXVI (Continued) . HYDROGRAPHIC DATA Sea water samples taken at depth of one fathom •FEDERAL GOVERNMENT WHARF, VICTORIA HARBOUR Time C Temp. /oo Cl/kg Nov. 25, 1933 13:30 9,0 17.21 Nov. 28 13:30 8.4 16.45 Nov. 30 13:30 8.2 16.96 Dec. 1 15:30 8.1 16*85 Dec. 4 15:50 7.4 16.49 Dec. 6 13:30 8,0 16.75 Dec. 7 15:50 8.0 14.68 Dec. 9 13:30 8.0 16.48 Dec. 11 15:30 8,1 17,52 Dec. 13 13:50 8.1 16*94 Dec* 15 13150 7.3 16.85 Dec. 16 15:30 7*5 17.10 Dec. 18 15:50 7.5 16.69 Dec. 19 13:30 7*5 15,85 Dee. 20 15:30 7.4 15,66 Dec* 22 13:50 8.0 16.44 Dec* 26 15:50 7.a 16.16 Dec* 27 15:50 7,1 16,54 Dec. 28 15:30 7.4 16*42 Dec. 29 15:30 8.0 16,35 Dec. 31 14:00 7.4 16.57 sulphide contamination. T A B L E X X X V I (Continued) F E D E R A L GOVERITi.IEIT W H A R F , V I C T O R I A H A R B O U R Bate Time c Temp* /oo 01/kg Jan* 1, 1934 13 S30 8*0 16.15 Jan* 5 13'30 8.1 16.88 Jan. 8 13:30 8.0 16.55 Jan* 10 13:30 7.4 15,58 Jan* 11 13:30 7.4 16*54 Jan. 12 15:30 7.2 16*55 Jan* 15 13:30 7.4 16.68 Jan. 16 13:50 8*0 17*06 Jan* 17 13:50 8*0 16,74 Jan* 18 15:50 7.4 16.58 Jan* 19 15:50 8,0 17,54 Jan. 22 15:50 7*5 16.20 Jan* 23 15:30 7*2 14,71 Jan. 24 13:30 7.1 14*07 Jan. 25 13:50 7.5 16.65 Jan. 26 13:50 8.6 16.20 Jan* 29 15:50 7.4 16,29 Jan. 30 15:50 3d-1 16*64 Jan* 31 15:50 8» 1 16.55 Feb* 1 15:50 8.0 16,57 Feb. 2 15:30 8.0 15.81 Feb* 5 13:30 8.1 15*94 Feb* 6 13:50 8.1 16.55 s - sulphide contamination. TABLE XXXVI (Continued) FEDERAL GOVERNMENT YffiARF, VICTORIA HARBOUR Date Time. C Temp. /oo Cl/kg Feb. 7, 1934 13530 8.5 15.96 Feb. 8 13:30 8.3 16*46 Feb. 9 13:30 8. 2 16.09 Feb* 10 13:30 8,1 16.14 Feb. 12 13:30 8 . 2 16*55 Feb. 13 13:30 8.2 16,62 Feb* 14 13:30 8*2 16.55 Feb. 15 13:30 8.5 16.72 Feb* 16 13:30 8*5 16.11 Feb* 19 13:30 8t> £ 15,88 Feb* 20 13:30 8,4 16,59 Feb. 21 13:30 8 . 2 17*01 Feb. 22 13:30 8.2 16.17 Feb. 23 13:30 8*2 16.17 Feb.. 26 13:30 8.5 16,75 Feb. 27 13:30 8.2 16.46 Feb. 28 13:30 8.2 16.45 Mar. 1 13:30 8.5 16.54 Mar. 2 13:30 8.5 15.79 Mar* 5 13:30 7*4 15.59 Mar. 6 13:30 7.4 14,86 Mar, 7 13:30 8.1 14,25 Mar. 8 13:30 8. 2 15*09 s - sulphide oontaminati on* TABLEXXXVI (Continued) FEDERAL GOVERNMENT WHARF, VICTORIA HARBOUR Date Time c Temp. /oo Gl/kg Mar. 9, 1934 13:30 8,4 15.79 Mar, IS 13:30 9.1 16,72 Mar. 13 13:30 9,2 16.49 Mar. 14 13:30 9*2 16.01 Mar. 15 13:30 9,1 15,80 Mar. 16 13:30 9.2 16,55 Mar. 19 13:30 9.5 15.93 Mar, 20 13:30 9,2 16.04 Mar. 21 13:30 9 © S 16,26 Mar. 22 13:30 9*2 l a r . 23 13:30 9.5 15.78 Mar. 26 13:30 9.2 16.46 liar, 27 13:30 9*2 16,83 Mar* 28 13:30 9.5 16.55 Mar. 29 15:30 9*4 16.68 Mar. 31 7:50 9.2 15,96 Apr, 2 7:50 9.2 16.92 Apr. 3 15:50 9.5 15. m Apr, 4 15:50 10.2 14.96 Apr. 5 15:50 10 « 2 15.52 Apr. 6 15:50 10,4 15,26 Apr, 9 15:30 9.5 16.81 Apr. 10 15:50 10.1 16,49 s - sulphide contamination. TABLE XXXVI (Continued) FEDERAL GOVERNMENT WHARF, VICTORIA HARBOUR Time 0 Temp. °/oo 01/kg Apr, 11,, 1934 13530 10.0 16*87 Apr, 12 13:30 10.0 16.74 Apr* 15 13:50 10.4 15*95 Apr, 16 13:50 11.2 15.69 Apr, 17 15:50 11*0 16.02 Apr, 18 15:50 XX* X IB* 98 Apr, 19 15:5© 11.4 16.46 Apr, 20 15:30 12*1 16.28 Apr, 25 15:50 11.4 16.55 Apr, 24 15:50 11.3 16*59 s Apr, 25 15:50 11*3 16.50 Apr, 26 15:30 12.1 16,45 Apr. 27 15:39 • X 2 s 2 16*26 Apr* SO 13:50 12.0 16.46 May 1 13:50 12.0 16.49 May 2 13:50 11.3 16*26 May 3 15:50 11.3 16*54 May 4 12:00 11*2 16.41 May 7 15:30 11,1 16.66 May 8 13:50 10.3 16*92 May 9 13:30 11*1 16*82 May 10 15:30 11.0 16,91 May 11 12:30 11.3 16*74 s - sulphide contamination TABLE XXXVI (Continued) FEDERAL GOVERNMENT WBARF, VICTORIA BARBOUR Date Time c Temp. /oo Cl/kg May 15, 1934 13530 15.1 16.46 May 16 13550 13^ 1 16.56 May 17 13530 15. 0 16.55 May 18 12500 13.0 16,40 May 21 15550 15.0 16.52 May 22 15 550 IS « 2 16.65 May 23 155 50 12 » 1 16,67 May 25 115 50 12.1 16*60 May 28 15550 14.1 16.52 May 29 15550 14.4 16.45 May 30 15550 12 «1 16.85 May 31 15550 15,1 16.45 June 1 11545 15*4 16.46 June 5 9 500 15,1 16.85 June 5 13 5 30 13© 2 16.85 June 6 15550 14.0 16,74 June 7 15 530 14.2 16*76 June 8 11530 13* 3 16.82 June 11 155 50 14.4 16.79 June 12 15530 15,4 16.80 June 13 13530 15.0 16.81 June 14 15550 15.1 16.75 June 15 13 550 15 e 2 16*77 TABLE XXXVI(Continued) FEDERAL G0V13PMMT. YfflARF, VICTORIA BARBOUR Date Time c Temp. /oo Cl/kg June 17, 1934 9:00 14.4 16*65 June 18 13:30 15 © 2 16.55 June 19 13:30 15.2 16*55 June SO 11:30 15.2 16.46 June 21 13:30 15.2 16*51 June 22 11:45 15,1 16,59 June 25 13:30 15 0 3 16.46 June 26 15:30 14.1 16. 58 June 27 13:50 14.1 16*55 June 28 13:50 2 16*63 June 29 15:50 15 © 2 16*60 July 2 15:00 15*1 16*96 July 3 15:50 14,0 17,08 July 4 15:50 15.4 17.02 July 5 14:00 15.0 17.10 July 6 12:00 15.4 16*94 July 7 11:45 15.4 16.90 July 9 15:30 15* 1 16.77 July 10 15:30 14.4 16,75 July 11 13:30 15.1 16.55 July 12 13:50 15« 1 16*74 July 13 12:00 14.4 16.76 July 16 15:50 13© 3 16*84 TABLE XXM (Continued) FEDERAL (K)VERFM3M\" WHARF, VICTORIA HARBOUR Date Time 0 Temp* /oo 01/kg July 17, 1934 13:30 14.0 16.95 July 18 13:30 14*0 16.98 July 19 13:30 13* 3 16.94 July SO 12:00 15.4 16,98 July 23 13:50 14.0 16*95 July 24 13:30 14.5 16.87 July 25 15:30 14,5 16.95 July 26 13:50 15.0 16.77 July 27 11:45 16,0 16,77 July 30 13:50 15,4 17*02 July 31 15:30 14,5 17.07 136 .. TABLE XXXVII HYDROGRAPHIC DATA Surface samples DEPARTURE BAY, B. C. Oct. Date oe Temp.' /oo Cl/kg Date, r c. Temp, /oo Cl/kg 1, 1931 12.0 15.63 Oct. 29 10,4. 12.01 2 11.8 15,64 30 9,8 10.77 3 11.7 14.57 51 10,0 10*17 6 10.7 14.44 HOT, 2 9.0 14.78 7 12.8 14.56 5 9,0 14,66 9 11.9 14.93 4 10.0 15.99 10 12& 7 14.95 5 9,0 IS© 32 12 11$ 8 15.05 6 9,5 14.23 13 11® 7 15.17 7 9,5 11*64 14 11.8 15,75 9 7.8 14. 27 15 12.1 15.01 15 8.5 15.24 16 11.7 14.53 16 7.5 13,64 19 11.8 14.29 17 7.0 14.24 20 11® 2 15,18 18 9.0 15 o 27 21 10.6 15,14 21 7.4 15.65 22 10*3 15.32 25 7,4 15*60 23 9.6 15.56 27 6.5 15.48 24 8.6 15.57 28 7.2 15*64 26 8.8 IS. 63 50 7,2 15,54 27 9.2 14.77 Dec. 1 7.1 15.52 28 9.8 14.41 2 7.0 13.67 TABLE XXXVII (Continued) DEPARTURE BAY, B . 0. Date c. Temp. /oo Gl/kg Date 0. Temp* /oo Gl/kg Dec. 3, 1951 7.2 15.75 Jan* 15 3# 3 11.16 4 7.6 16,59 17 5.3 12, 20 5 7.2 '15.61 18 6*1 15*31 7 8.2 15*62 19 5,6 8*37 10 7.2 . 15.50 20 5*7 11.40 11 6*2 15.49 21 6.6 15.90 12 6.0 15,44 22 „3« 5 10.47 14 5.8 13© 81 25 6*0 15*80 16 • 6.1 14,95 24 5,6 15*57 18 7.4 11*56 25 5*0 16,74 23 6.5 12,87 26 5,6 15«5 3 28 6.5 13.21 Feb* 1 5.7 15.94 29 5,8 12,14 2 4*9 16*89 30 5.8 13.81 5 4.5 15*27 51 5.8 12.22 4 4*7 14*93 Jan. 2, 1952 6*0 10.70 5 5*9 15.91 4 6.1 13.15 6 6.5 16*04 7 7.4 13* 65 8 6.3 16.74 8 7.8 12*66 10 6*3 16* 12 9 6.0 12.81 11 6.0 16,05 11 6,8 16.07 15 5.3 15*99 15 2.4 9.41 17 5.5 15,51 14 2,2 10,67 18 5*3 15.98 TABLE XXXVII( Con tinned) HEPARTURE BAY, B* 0. 0* 0 /oo C /oo Date Temp* Cl/kg Temp, Cl/kg 24, 1932 7.2 14.21 A p r i l 5 8,0 16*52 25 7.8 IB® 89 6 7*4 14.77 26 7,8 9.76 7 7.5 14*82 27 7.4 8.00 9 7*9 16.39 29 7.8 12,60 11 8*5 13.72 1 5.3 5,87 13 9.0 14.39 Samples taken 4 feet from surface 4 4.8 14.70 15 -9 © £ 14.95 5 . 6,5. 16*52 18 8*8 14,66 7 16.18 19 9.5 15*76 8 6.1 16*27 20 9.5 15.88 J9 6.3 16.07 22 10*0 14.85 10 7.3 15.49 25 10*8 14. 21 11 7.2 16.16 26 10.8 14.55 14 8.0 16,82 27 11.4 14.22 15 8.5 16*81 28 11.0 15.10 16 7.0 15.82 29 11,7 15*51 19 9.0 14*78 May 1 13,4 15.05 21 8.1 13.62 2 13* 4 15,05 24 7.0 16.09 3 13,8 14,57 29 7.5 15.34 4 13, 2 14.20 31 8.0 5 13,7 14.47 2 8.3 16.34 6 15.0 15,24 TABLEXXXVH (Continued) DEPARTURE BAY, B. C. Date C. Temp. . % o Cl/kg Date C Temp /oo Cl/kg May 9, 1932 10.5 15.85 June 9 17*5 13.94 10 12.5 12.76 10 17.5 12.80 13 IS© X 14*21 14 21.0 11«. 11 14 12.5 15.75 15 18.0 12,56 16 15.0 15.80 16 18,0 14,67 17 13.1 14.08 17 15.0 13. 24 19 14.70 18 16,5 15*62 20 11.8 15,79 20 16.5 14.42 23 12 © 2 14*89 21 14.8 15,41 25 15.2 12.04 22 17*5 15.96 26 15b. 8 12<> 27 25 17© 5 12.70 27 15.6 15.97 Surface samples 28 14.5 13,80 24 17*4 10, 69 30 14*8 15.94 2 foot . level 51 14*9 14.04 29 18.5 15.57 Fune 1 15.8 14*87 July 5 16.0 12*16 2 14.5 14.95 6 17.0 12.35 5 14.0 15.19 7 19*0 12.42 4 14.0 14.02 8 19,0 12 e 7 2 5 15.7 13.57 4 foot level 6 15 « 3 13.49 11 14,8 13*92 7 16.5 13.56 12 ' 14.0 14,06 8 16.2 14.54 15 14,2 14.44 TABLE XXXVII(Continued) DEPARTURE BAY, B, C. c. /oo 0. /oo Date Temp* Cl/kg Date Temp. Cl/kg - 14, 1952 14.9 15,19 July 28 15.8 14*48 15 15*0 15.56 29 15*. 5 14,62 18 18,0 8.24 Aug. 1 17,6 10.84 19 16,8 11.64 5 18,5 10*49 21 18 15.66 8 18*0 22 17*0 3.2©. 88 10 16.5 25 16.1 13 » 25 11 17*5 26 17.-5 12,75 12 17,0 27 • 17.8 15.79 15 18*0 141 TABLE XXXVII HYDROGRAPHIC DATA Averages computed from thermograph sheets. Thermograph placed at 4 foot l e v e l from surface, DEPARTURE BAY, B.C. Date c. Temp. (MEAN) . Date c. Temp. (MEAN) Date c. Temp. (MEAN) Aug. 14, 1932 17,5 Sept, 6 16 Sept. 29 14 15 17.5 7 16 30 14 16 17 8 14.5 Oct. 1 14 17 . 16.5 9 15.4 2 14 18 16.5. 10 16 3 14 19 17.5 11 15.3 4 14.5 20 17 12 15,3 5 13.7 21 17 13 15.3 6 •13,5 22 16.5 14 15 7 23 16 15 .14.8 8 13,5 24. 18 16 15 9 . 13.5 25 19.5 17 14.5 10 12.3 26 20 18 14.3 11 116 *7 27 19.5 19 13*5 12 11 28 17.5 20 13 13 10.7 29 17.5 21 13 14 10.5 30 17 22 13 15 9,5 31 16 23 13 16 9*7 Sept, 1 16.5 24 12,8 17 10,3 2 16,5 25 13 18 10*5 3 15.5 ' 2 6 13.5 19 10*3 4 15 27 13.5 20 10.3 5 14 28 14 TABLE XXXVII(Continued) DEPARTURE BAY, B. C. Date SI, 1952 0. Temp* (MEM) 10*6 Date Nov* 30 c, Temp. (MEAN) 8,0 Date Jan* 7 0, Temp. (MEAN) 6,5 22 10.5 Dec. 1 8.5 8 6,5 23 10.5 2 8.0 9 6,5 24 10.3 3 8*5 10 6.5 25 -LO © 5 4 7.5 11 6*5 26 10.5 5 7.0 12 6*5 27 10.5 6 to 20 missing 15 6,7 28 10.3 21 7*5 14 6,5 29 10*0 22 7.8 15 6.0 30 10,0 23 8.0 16 5,5 31 10.5 24 7,5 17 4.8 . to 18 missing 25 7.0 18 18 9*5 26 7.5 19 5*7 19 3.7 27 6.8 20 6*5 20 8.5 28 6.5 21 6,5 21 8.0 29 6,5 22 6*7 22 9.0 30 6.5 25 6.5 23 9.3 31 6*5 24 6,7 24 7,8 Jan. 1/55 7*0 25 6.5 25; 7.5 2 7.0 26 6.5 26 8.6 5 6*5 ' 27 6,8 27 8.7 4 6,5 28 6*5 28 8.5 5 6.7 29 6.5 29 8*3 6 6.0 50 6.0 143 TABLE XXXVII (Continued) DEPARTURE BAY, B.C. C. C» C. Temp. Temp. Temp. Date (MEM) - Bate (MEM) Date (MEM) Jan* 51, 1955 6.0 Feb, 25 7.0 A p r i l 20 11,6 Feb. 1 5.5 24 6.5 21 11,5 2 5.5 25 6.5 22 11 5 5.5 26 — 25 11.4 4 5*5 27 24 11.5 5 5*5 28 25 11.8 6 5.5 Mar. 5 6,5 26 12 7 5 4 5.5 27 11*8 8 4,5 5 6 28 11 9 4.5 . 6 6.5 29 11 10 : 4.5 7 6 30 11 11 6 8 - 5,7 May 1 10.5 12 5*5 9 5,7 2 9.8 IS 4,8 10 5*5 5 9,2 14 4.5 11 5.5 4 9.5 15 5,5 12 6.5 5 9 16 5.5 15 6.5 6 8.5 17 5*5 14 6,8 7 8*5 18 6 15 7 8 9 19 6 16 6.5 9 10.0 20 6.5 17 6.5 10 12 21 6*5 18 6.5 11 12 28 7.5 19 6,5 12 12.5 NOTE; March 20 to A p r i l 20 continued on next page. , TABLE XXXVLI (Continued) DEPARTURE BAT, B.C. Date 0. Temp. (MEAN) Date c. Temp, (MEAN; March 20, 1935 6.5 A p r i l 7 8 21 6.5 8 8,5 22 6*5 9 8.5 25 6,5 10 8.5 24 6 11 8,5 25 6.5 12 9 26 7 15 9,5 27 7 14 9.2 28 7 15 8,5 29 6,5 16 8,5 50 7 17 9 51 7 18 9 A p r i l 4 7.8 19 10,9 5 8,5 6 8.5 TABLE XXXVII (Continued) DEPARTURE BAY, B, 0. Date c. ' Temp. (MEM) Date C Temp. (MEM) Date c. Temp* (MEAN) 13, 1933 11 June 5 13.5 June 28 18 14 10.5 6 14.8 29 17,5 15 10.5 7 14 50 17.5 16 10.5 8 13 July 1 16 17 10.5 9 14 2 14.5 18 11 10 14 5 14,5 19 11« 5 11 15 4 15$ 5 20 14 12 16 5 17 21 15 13 16.3 6 17.5 22 15.8 14 16.5 7 17.8 23 11.5 15 17,5 8 16.8 24 11 16 17,5 9 17 25 10 17 17,5 10 18© S 26 10 18 17 11 1*7 Q 2 27 11.5 19 16. 5 12 16,5 28 11.5 20 16 15 14,5 29 11 21 16,5 14 17 50 11 22 16 15 18. 2 31 12« 5 23 16 16 18, 8 1 14 24 16,5 17 18.8 2 14.5 25 16 18 15.2 3 15 26 16.5 I 9 18 4 14.5 27 17 20 19.2 TABLE XXXVLT(Continued) DEPARTURE BAY, B, C... Date c. Temp. (MEAN) - Date c. Temp, (MEAN) Date , C. Temp. (MEAF) 21, 1933 19.2 Aug, 13 20 Sept, 5 13 22 20 14 19.8 6 13 23 19.5 15 20 7 15, 24 19.2 16 20,5 8 14 25 19.5 17 20,5 9 16 26 20 18 19 © 5 10 16 27 19.5 19 16.5 11 15,2 28 19 # 2 20 17*0 12 15* 5 29 19.5 21 18.2 13 16 30 20 22 18.5 14 15.5 31 17.5 23 18,8 15 15$ 5 1 20.5 24 19.2 16 14.8 2 19 25 18,5 17 13 3 16.5 26 19.8 18 13. 4 17.5 27 20 19 12.8 5 18.8 28 19 20 1(3$ 2 6 16.8 29 16,5 21 11.8 7 17 30 15,8 22 11 8 19.5 31 14.5 23 11.2 9 20 Sept. 1 16 24 11.8 10 20 2 17 25 12 11 20.5 3 16,8 26 IS* 2 12- 20 4 15 27 12.5 TABLE XXXVH (Continued) DEPARTURE BAY, B. C* C, C* 0* Temp. Temp. Temp. Date (MEM) (MEM) Date (MEM) Oct, 28, 1955 .12.5 Oct. 21 10.5 HOT. 13 9.5 29 11. 8 22 10 14 9 30 11.5 25 10*2 15 9,5 1 13 • 24 10.5. 16 9.5 2 15 25 10,5 17 9,3 3 13.5 26 10,5 18 9.5 4 15.8 27 10.5 19 9,5 5 15*8 28 10,5 20 9*2 6 15.8 29 10 • 21 9.5 7 15,5 30 10 22 10 8 15.5 31 10 23 10 9 15,5 Nov. 1 10 24 9,7 10 15 2 9.5 25 9.5 11 15 3 9.5 26 9.5 12 12.8 4 9.5 27 9 13 12 5 9,3 28 8.7, 14 11 6 9 29 8.5, 15 11 7 9 30 8*5 16 10.5 8 9.8 Dec. 1 8.5 17 10.5 9 9,5 2 9 18 10,5 10 9 3 9 19 10.5 11 9,5 4 8.8, 20 10,5 12 10 5 8 148 TABLE M?H(Continued) DEPARTURE BAY, B.C. C. 0. c. Temp. Temp. Temp. Date (MEA¥) Date ( M E M ) Date ( M E A N ) Dec. 6, 1933 8 Jan, 4 7.5 Feb. 1 4*5 7 8 5 6.5 2 4,5 8 8 6 6*5 3 4 9 8,3 7 6 4 4 10 8 8 6.5 5 4,5 11 7 9 6.8 6 4.5 12 7 10 7.7 7 5 13 7.7 11 6.5 8 5 14 7,7 12 6.3 9 4,7 15 7,5 13 6 10 4,8 16 6,5 14 7.2 11 5 17 7 15 6.3 I 2 5 18 7,3 16 7.3 13 4*5 19 7*5 17 7 14 5 20 to 27 missing 18 6 15 5 28 7 19 6,8 16 4.8 29 8 20 6.5 17 5 30 8 21 7 18 5. 51 8. 22 6.5 19 4.8 Jan* 1, 1954 7,5 25 7 20 4,8 2 7.7 24 6.5 21 5 5 8 25 to 51 missed 22 5 4 7.5 s s 5 TABLE XXXHI DEPARTURE C. Temp. Date (MEAN) . Date Eebe 24, 1954 5 Mar. 19 25 5 20 26 4.8 21 27 5*2 22 28 5.5 23 Mar. 1 5* 5 24 2 -5»B 25 5 6 26 4 5.2 27 5 4,7. 28 6 -5. ' 29 7 5 30 8 5.5 31 9- 6«\".. Apr. 1 10 6, 2 11 to 13 missing 3 14 6.7 4 15 6.7 5 16 6.2 6 17 6.5 7 18 6.8 8 19 7 9 20 7 10 (Continued) BAT, B.C. Temp, Temp. (MEAN) Date (MEM) 7 Apr. 11 9.5 7 12 • 9.7 7.5 15 10 7.7 14 11 7.5 15 9.5 7,7 16 9.5 8 17 10 8 18 11.5 8 19 12 8.5 20 15.5 8 21 15.8 V«5 23 3.13© 5 6.7 23 15.5 6.7 24 12.5 7 25 11.5 7.7 26 11 8 27 11.5 8.5 28 11.8 9.5 29 11.5 9.5 50 10.5 9.5 May 1 10.5 8.7 2 11 8 5 10.5 TABLE XXXVII (Continued) DEPARTURE BAY, B. 0. C. C. Temp. Tempo Date (MEAN) Date (MEAN) 4, 1934 10 May 86 15 5 9 87 15.3 6 9 88 15.5 7 8.5 29 15.5 8 9 30 15.5 9 11 51 15 10 10.8 June 1 15.3 11 11 2 15.7 12 12.5 3 15.7 15 13.5 4 15.7 14 13.5 5 16 15 12.5 6 16.7 16 13 17 18.5 18 12 19 10 20 10.5 21 12.5 22 13.5 23 14.5 24 14,8 85 14,3 TABLE XXXVJI (Continued) HYJ3R0GRAPHIC DATA Samples taken at three foot level below surface DEPARTURE BAY Date Time C * Temp. pH /oo Cl/kg June 12, 1954 19S.10 18*4 15.16 13 19120 19.0 13.12 14 19:45 19,0 12,86 15 20:55 18*0 15,60 16 22:50 17,4 13# 21 17 20:15 16.7 13 « 51 18 • 9:00 16.5 15.64 19 10:10 16.9 12® 15 20 11:55 17.5 12,71 21 14:00 .17.5 13.28 22 16:50 16. 6 13.81 23 16 :00 18.0 l3e 21 24 17:20 18*5 12,45 25 17:50 18.7 11,83 26 19:50 18.0 12.07 27 19:00 17*0 12.77 28 19:00 16.8 8.6 13$- 37 29 19:15 15-9 5 8.4 13.9© 30 19:00 17.7 8.5 12.89 July 1 2 9:00 17.7 8.5 11*71 TABLE XXXVH (Continued) DEPARTURE BAY, B. C, Date Time C. Temp. pH /oo 01/kg July 3, 1934 19:05 19-. 0 8,63 12.10 4 12:00 18.0 8.37 13.47 5 13:50 17.4 8.4 14.08 6 14:05 16.8 8,4 14.10 7 16:40 17.1 8.5 13.37 8 17:30 17.6 8.5 14,05 9 17:35 16,7 8,4 14.75 10 18:55 17.0 8,35 14.46 i l - \" 19:16 - 17.0 •8.57 14.39 ls 19:10 17.0 8. 2 14.25 13 19:45 16.8 8.37 14,03 14 19:00 17.2 8,27 14.18 15 19:00 16.-0 8.45 14.18 16 19:05 8,17' 15,06 17 19:50 .14*. 6 8.0 15.59 18 9:10 15.8 8.2 11.52 19 11:25 17.2 8.4 10,16 SO 16:15 17.0 8.4 11© 1*5 SI 15:00 16.7 8,3 . 12.09 22 15:50 17,3 ' 8,27 12© 22 23 16:15 19.4 8.4 10.72 24 17:30 20,0 8.4 11.34-25 17:30 20.4 8.4 11,63 TABLE XXXVHContinued) DEPARTURE BAY, B.C. Date Time C. Temp. pH /oo Cl/kg July 26, 1934 19:00 18.2 8,3 13.47 27 19:20 17.0 8,3^ 14.37 28 19:25 17.4 8.37 14,60 29 21:40 17.4 8.7 14.91 30 8:45 16.5 8.3 14.15 31 9:15 16.2 8,4 13.87 Aug, 1 10:15 15.7- 8,4 14.70 2 9:00 15.8 8,35 14.43 3 • 14:20 15.6 8.45 15.82 4 15:50 15*- 3- 8.3 14.14 5 17:20 14.3 8* 3 14,89 6 19:45 15.0 8.6 14.92 7 20:30 15.0 8.6 14,76 8 19:20 16.7 8.3 10.36 9 i9:10 ' 17 A 3 8.3 10.00 10 18:50' 18.0 8.5 10.76 ' 11 22:20 18.0 8.5 10.90 12 19:00 17,5 8.5 15.18 13 19:15 19.2\" 8.4 12.70 14 19:40 18.8 8.37 113 & 32 15 19:15 20,4. 8.37 11.91 16 9:35 19.7 8.3 12.58 17 11:15 18.2 8, -37? 13.38 TABLE XXKVII (Continued) DEPARTURE BAY, B.C. Date Time 0, Temp. pH /oo 01/kg Aug. 18, 1954 13J55 17.0 8.2 14. 34 19 14:40 19.0 8,27 15,56 20 21:20 18.8 8.5 15,07 21 16:45 19.4 8,5 13.02 22 17:30 19.3 8.4 13,50 25 17:40 18*8 8,55 13.83 24 17S50 18.8 8,4 14.02 25 17 :45 19.0 8.4 14,01 26 • 16:45 20.1 8,57 14.11 27 19:00 18*6 8.4 14.48 28 18:55' 17.7\" 8,5 14.65 29 17:50 16.7 8*3 15.17 50 19:25 16.7 8.5 ...14.57 31 23.20 17.8 8.6. 13*28 Sept. 1 13:50 18*7 8,37 13.56 2 14; 40 18,8 8,4 13.82 3 17.40 19,5' 8*6 13.47 4 16.45 19.1 8.37 13.96 5 17.50 18.0 8.35 14,05 6 19:40 16.7 8,4 14. 63 8 17:00 17*5 8*4 •'• 14.55 12 17:00 14,. 0 8.1 15.42 15 8:30 12.0 7.9 15.62 TABLE XXXVUi;Continued) DEPARTURE BAY, B.C. C. °/oo Date Time Temp. pH Cl/kg Sept. 14, 1934 9:00 11,3 7,9 15.85 15 10'tOO 11.7 8.0 15.91 17 9:00 14.1 8,3 12,61 18 9:00 14,0 . 8.4 15.45 19 17:00 15,1 8,4 15.95 20 13:00 15.0 8,4 15.96 24 16:45 1*3$ 5 8,5 15,08 27 16:45 14,2 8,3 14.48 Date October 14, 1951 15 16 17 19 20 21 24 26 27 28 29 30 51 November- 5 4 5 6 7 9 10 TABLE XXXVIII HYDROGRAPHIC DATA Surface Sample GORE AVE, WHARF, VANCOUVER, B.C. c /oo Temp. Cl/kg 11.4 14.73 11,2 13.86 11« H 14,99 11,0 14.48 11*0 14.05 10.0 14,86 10.6 15© 15 10.1 12,56 10,0 14.15 9,8 14.43 9*8 14,29 9,8 14,09: 10.0 14,79 11.0 15,90 10.0 14*20 10,0 14, 66 10.0 13.98 10.0 13.00 9.5 13.42 9* 5 14.30 9.3 14.59 TABLE 38 (Continued) GORE AYE. IfflARE, VANCOUVER, B. C* Date Time C • Temp* /oo Cl/kg November 13, 1931 9.5 13.67 14 9.0 14, 33 16 9,0 17 9.0 14.40 18 8,4 13.94 19 8. S 13.37 20 8,3 13,96 21 7,8 14,19 23 7*8 14*22 25 8,0 14,80 26. 8.D 14*99 27 7,8 14.95 28 7,8 15.08 December 1 8.0 15,21 \"3 11; 00 7.9 14.71 5 16 £00 7.8 14.70 7 16 SOO 7.7 15*24 9 16 500 7,5 14*63 11 16 500 7,4 15.02 12 16 500 7*5 15 & 33 14 1 2 : 0 0 7.5 15.88 15 15:30 7,8 15*57 16 16:00 7.8 15.04 158 TABLE 38 (Continued) GORE AVE. vvBARE, VANCOUVER, B. C. Date January Time 0. Temp, /oo 01/kg 17, 1931 16:00 7.6 13,74 18 16:00 7,8 11.91 19 16:00 7,5 9.97 21 16 :30 7*5 13,67 22 16:30 7.4 12© *71 23 17:oo 7.4 14.84 24 16:30 7.4 14.53 26 14:30 7.8 15. 29 28 14:30 7,8 15.50 29 14:50 7,4 1*5© 21 30 15:10 7,7 15.40 31 15:00 7.5 15,73 2, 1932 14:50 7,5 15, 21 4 15:00 7,5 1*3© 51 5 7.5 15,50 6 16:30 7.4 14.97 7 15:45 7,4 15,57 9 14:15 7,8 15,40 11 16:30 7,5 14,86 12 16:30 7.4 14.92 13 15:00 6,8 15.05 14 16:00 6.0 14.35 15 16:00 5 o 9 14.69 TABLE 38 (Continued) G-GRE ATE. WHARE, VANCOUVER, B, C. be Time c. Temp. °/oo Cl/kg 16, 193S 15:00 '6.5 14.83 18 16:00 6.8 14.57 19 17:00 6.8 14.75 20 15:30 6.8 15.02 21 16:15 6.8 15.69 22 16:30 6.8 15.21 23 15:oo 7.0 15.40 26 17:00 . 6.2 14.92 27 16:30 6.4 15,57 29 15:30 6.5 15*84 50 14:20 6.0 15.69 1 15:30 5,6 14.62 5 16:50 5.8 15*42 '5 16 :50 6.0 15,95 6 i6:oo 6.0 15.19 8 17:00 6.5 15*98 9 17:00 6.5 15 « 31 10 17:00 6.5 15.40 11 17:00 6.4 15 o 21 13 15:30 5.0 15,47 20 15:50 •6.5 15.62 27 12:00 7.2 12,42 29 16:30 6.5 10.44 TABLE 38 (Continued) GORE AVE. -TSBAHF, VANCOUVER, : B.. C . ., Date March. Ap r i l Time 0* Temp. /oo 01/kg 3, 1932 17:15 6.0 14*15 5 17:00 7*0 15,13 7 16:15 6*8 14,95 12 14:00 8*2 13,26 15 17:00 7*0 14,28 16 14:50 7*0 13,76 19 12:00 8*5 14.03 25 17:00 7i5 14,36 25 11:50 8*2 14. 63 26 17:00 7.5 14*33 28 .14:00 8.4 14*18 29 14,50 7*7 14,39 50 16*05 7.0 13*09 51 17:10 7.5 11,83 1 14:00 7.7 2 16:15 7.5 13*41 6 16 250 7.5 14.73 7 15:50 8.0 14.13 9 11:50 8.0 14.19 11 15:00 8,0 13* 73 16 14:40' 9.6 13 © 25 22 l l : s o 9.0 14.54 25 15:50 9,0 14.19 A p r i l May June TABES 38 (Continued) GORE AVE, WHARF, VANCOUVER, B, C, Time 0, Temp, /oo 01/kg 25, 1932 14550 9.0 14.02 28 16150 10.0 12.70 50 14 500 10,5 . 7 15:00 11,5 12.96 11 17 550 10.5 xx«xs 15 17:00 10,9 10,81 14 15540 11.16 16 16 550 Ho 5 10,95 18 14:50 12.0 11.40 21 14:15 X2 & 5 XX# Xt5 25 14:00 11.5 - 10,96 26 11:50 10.5 X*3© XS 28 14:45 12.3 11.58 50 15S00 12.2 11.08 2 9:00 15.4 7.72 4 11:30 15.2 9.95 6 11:00 15.0 .8* 14 8 15:50 14.2 9.50 11 14:00 15,7 7,25 15 11:00 1*3 •> S 8.71 15 17:00 12.2 12.74 18 11:30 15.0 9.48 22 l6:oo 12.5 11.17 TABLE 38 (Continued) GORE ATE. WHARF, VANCOUVER, B. 0. \"f Time c. Temp. /oo Cl/kg June 24. 1932 19 tOO 14.5 8.40 25 12:15 14,6 8.61 27 15:15 15.0 9.15 28 12:00 8 . 28 29 15:00 15,3 9.79 July 2 1 0 : 1 0 15.2 9.15 4 15:50 14.0 10.61 6 1 0 : 0 0 14.7 7.75 8 15:10 15,0 10.16 9 12:15 14.5 10.55 11 17:20 13© 3 10.39 13 11:15 13,0 10.05 16 10:00 13« 2 12*58 18 1 4 : 4 5 13.5 20 11:05 14.5 10,69 22 16:00 14.7 11.07 23 11:00 14,8 10,68 25 14:00 15.8 8.81 27 13:45 15,6 9,88 29 16t30 14,2 11*17 30 1 2 : 3 0 14,9 10.30 August 1 1 7 : 2 0 15,6 11.53 4 15:15 15.0 11,42 Date August 5,-1932 6 •:8-10 12 13 16 18 19 20 22 24 26 27 29 September 1 3 6 8 9 10 12 14 TABLE 38 (Continued) WHAEE, VANCOUVER, B. C. Ce /oo Time Temp* Cl/kg 16:20 15© 2 12.57 12:20 15 » 3 11.97 16:45 13.6 15,55 11:45 15.8 12,84 15,35 13,0 15*80 12:15 14,2 11*76 14:10 13,8 15.10 11:40 15.0 11,86 9:30 14.8 12«. 01 12:30 15.2 10*86 17:05 15.5 11.54 12:00 16.5 10.23 15:00 15,6 11.05 12:00 16 . 5, 9,63 14:45 14.8 11.41 16:20 13,5 12.89 12:30 12*. 9 13.77 12:30 IS. 2 14.13 14.45 14.2 12*57 17:40 13.9 13* 64 13:15 13.8 13. 59 17:30 12.7 14.13 13:15 15.8 11,88 Date October November TABLE 38 (Continued) .©ORE AVE. WHARF, VANCOWEH, B. 0 . Time c. Temp. /oo Cl/kg 16, 1932 17:15 13.0 13,79 17 10:30 12.4 14.28 19 17:20 -LI* 5 13.50 21 17:20 1 2 . 5 10,87 23 13:15 1 1 . 7 14,30 24 14:10 12*0 13 .77 27 14:30 11.8 14.55 28 17:15 11*8 14.09 1 13:00 11.5 14.69 4 17:00 12.0 14.47 6 15:45 11.5 14,15 8 1 2 : 0 0 11© 0 11 17:00 11.0 14, 69 13 13:30 11.0 14.73 15 11:30 10,9 14,00 17 15:30 10.8 14*07 19 15:30 10.5 14.32 22 11:00 10.0 14.26 25 16:oo 10,0 14.24 27 11:00 9,8 14. 29 29 10:30 9.4 14.53 2 16:45 9.5 • 14.84 3 16:30 9,4 14.48 5 11:00 9.3 13.48 165 Date December TABLE 38 (Continued) GORE AVI. YfflARl, VANCOUVER, B, C. Time 0. Temp. 0 / 00 01/kg 8,\" 1932 • 9;30 9.0 13.76 10 16:00 9.1 14,36 12 14:50 9.0 12,66 16 15:00 9.0 13,56 18 14:30 9.0 Samples taken at zero tide level 19 14:30 5.0 12,17 21 9:00 5.0 12.27 24 16:00 4.2 26 11:30 4.0 14.71 29 14:00 5.2 14.78 SO 13:50 14,90 3 11:30 4*3 14,04 6 15:45 4.0 14.39 9 14:30 4.0 14,16 10 14:00 4.0 14,93 13 9.'30 4.0 15.14 15 12:00 4.1 15,44 17 9:30 4.0 15.80 20 10:15 4.0 - 14.86 22 16:00 4.1 15,88 24 10:30 4.0 15.67 27 13:15 4.4 15,63 TABLE 38 (Continued) CORE AVE. WHARF, VANCOUVER, B. C. Date Time c. Tamp. /oo Cl/kg December 29, 1932 14;30 4 .1 16.13 31 12:30 4.0 . 15.69 January 3, 1935 10:00 4.0 14.78 5 15:30 4.0 14.50 7 12:00 4.0 15.76 9 9:45 4.0 15.45 11 16 215 4,4 15.52 13 15:00 4.1 15,83 14 9:45 4.3 16,04 17 i6:oo 4.0 15.00 19 16:30 4 .1 14.76 21 10:30 4.1 14.38 23 9:00 4.0 15.09 25 9:30 4,1 15.24 28 13:00 4,2 30 16:30 4,0 15,57 February 2 15:00 4.1 15.44 4 9:30 4,2 32 7 11:15 5.0 15.75 8 14:45 5,0 15.75 11 13:00 4.2 15.45 15 11:00 5,1 15.66 16 10:30 4,2 15.76 March. A p r i l TABLE 38 (Continued) GORE ATE, WHARF, ' VANCOUVER, B, C, .te Time °* Temp, /oo Gl/kg • 18, 1933 lo;50 4,2 14.79 20 17:00 5.0 21 15:15 5.0 25 9:50 4*0 28 14:50 4,0 2 15:50 4,1 15.26 4 9:30 «5« 1 15.26 7 10:00 4*0 14*96 8 14:30 4.1 15.03 10 10:00 4.1 15.76 11 9:45 4*0 15.79 13 15:30 4,2 15,46 15 11:00 4.3 15,44 17 15.*45 4,0 15.07 18 9:45 4*0 15. 36 21 14:30 4*5 14,85 22 15:30 4,0 14.98 23 15:00 4.1 15*28 25 11:00 4*2 15.35 Surface Samples 30 14:30 7,9 14.63 31 14:00 7 .9 14. 21 1 13:00 7.9 14. 68 TAB: GORE ATE. 1 Date Ap r i l 4, 1933 6 10 15 19 SO 21 24 27 May 5 6 9 11 15 17 19 22 26 29 June 1 3 5 7 •E 38 (Continued) ', VANCOUVER, B. C. Time C. Temp. /oo Cl/kg 15:45 8*2 14,98 17:00 8.3 15,44 17:15 8.0 15.57 9:00 7*8 15 » 2*7 16:00 9.0 15.55 17:00 9.5 15.06 16 :00 9.2 15.15 16 220 9*0 15,06 16:10 9..5 11:30 9,3 16:30 9,3 16:30 10,0 14:50 11.0 16:oo 9.5 15.75 17:30 10,0 15*08 16:30 11.2 11,48 14:00 10,5 11.54 14:30 10.5 11,29 16:30 10*7 12,59 11:00 11.1 11.17 12:40. 12* 1 10,89 16:oo 11.4 10,72 11:10 10,8 11© 22 TABLE 38 (Continued) GORE ATE. YJBARF, TANCOUTER, B. C. June Date Time 0. Temp. /oo 01/kg 9, .1933 16:20 10.8 11,93 10 9:35 11.2 10.08 13 16:30 12.4 11.88 15 16,55 13.6 9,61 16 14:30 14.0 8,47 19 14:50 15.2 10,01 21 12:00 13.5 8,54 24 11:00 15.0 8.12 26 17:00 IS # 5 10,66 29 12:00 15,5 7.42 30 17:15 15.5 8,12 3 16:00 8.83 5 11:00 13 e 2 8.83 7 11:40 15,4 8.71 8 11:10 13 » 2 8.35 11 16:30 13.5 10.51 13 15:30 15.8 7.66 15 10:15 14.8 8.11 17 ' 16:15 14.5 10.29 19 12:00 15.0 8.40 22 10:00 15.0 7.72 24 15:15 15.8 8.35 27 15:00 15.0 10.05 TABLE 38 (Continued) CORE AVE. WHARF,'. VANCOUVER, B. 0, July August ite Time c. Temp, /oo Cl/kg 28, 1933 17 J00 15.4 8,96 29 13; 00 15.5 8,35 31 16:00 15,7 8.02 4 15:30 14.4 10.69 5 13:00 14,0 10.94 7 17:00 14*3 11.96 9 11:00 15.0 11.45 11 17,0 17.2 9.17 12 12:00 16.4 9.59 15 17:00 15.4 12.89 18 16*30 14,4 12,17 19 12:30 15.7 10*23 22 11:5© 14.5 11,55 25 15:50 14,8 12,63 26 12:30 14.4 12,59 29 12:00 13.3 13.55 1 11:30 13© S 12.88 9 10:00 12*5 12*80 11 17:15 12.0 12.84 13 16:00 12*0 12,88 15 16:00 11.5 12.42 16 11:00 12© <5 10.28 18 14:45 11,5 IS© 39 20 13:45 12.0 15.01 171 TABES 38 (Continued) GORE AYE. WHARF, VANCOUVER, B. C. Dat October November ;e Time c. Temp. 0 /oo Cl/kg ' 22, 1933 16:45 11.0 12,81 83 10:15 10*5 14,10 28 17:30 11.0 11,98 39 17:00 11.0 IS** 31 30 11:00 10.8 12,31 3 14115 11,0 14.15 4 17:15 11*0 13,58 \"7 11:30 , 11.0 12,96 13 9:30 10.5 14.28 14 8:20 10.0 18 17:30 10*0 20 15:00 10*0 21 10:30 9.5 24 15:30 9,8 15.77 51 16:30 9.3 11.87 1 16:30 9,0 12*75 2 14:00 9*0 lie 1*5 4 11:00 9,0 13*81 7 11:15 9,0 14*49 9 16:00 9*0 13.64 10 11:30 8,9 13,58 14 11:00 8.7 15,69 15 16:50 9.0 15,69 18 11:40 8.9 13.21 TABLE 38 (Continued) GORE AVE. WHARF, VANCOUVER, B. 0. ^ate Time Temp. Cl/kg November 21, 1953, 14:30 9.2 13,77 2 5 9:45 8,7 12.19 2 7 16:00 8*5 13.40 29 16:45 8.0 14.33 30 15:00 8.0 12.56 December 2 10:15 8.5 15.90 6 16:15 8.0 14.38 7 11:00 8.2 15,08 9 11:15 7,8 13,00 13 16; 15 7*5 12.95 16 9:00 7*0 14.28 18 10:50 7.2 14.31 20 16:50 7,2 14.90 23 11:15 6*9 14.08 27 15:30 6.9 14.47 29 10:00 7.0 12.89 January 3, 1934 16:20 7,5 13*10 5 13:45 7.0 13.16 6 11:45 7*0 15.33 10 16:30 7.0 11.10 12 17:15 7.0 13*69 13 17:00 7.0 14.41 16 14:00 7.4 14.92 17 16:30 7.2 14.43 TABLE 38 (Continued). GORE AVE. WEAK?, VANCOUVER, B. C. Bate Time c. Temp. /oo Cl/kg January 20, 1934 10:45 6,5 13.43 24 16:45\" 6.0 15,58 26 l6:oo 6,5 13,77 27 9:45 7.0 14.21 31 16:30 7.5 13,73 February 2 11:45 7.2 13.74 5 15:30 7,0 12.51 7 16:30 7.5 12& 92 10 10:15 7,8 13,50 14 10:15 7,5 14*42 15- 14:30 7,5 14. 58 16 10:15 7© 2 14.50 17 15:30 7.8 14,15 20 15:30 7.5 ,14.30 21 17:50 7,2 15.86 24 10:00 7.2 14.25 27 14:25 7*5 14.12 28 15:30 7,5 IS* 28 March 3 10:50 7,5 14,06 6 17:00 7.8 13,83 7 16.45 7.2 13.50 10 10:30 7,6 14.47 12 16:15 8.0 14*69 14 16:30 8.0 14.63 TABLE 38 (Continued) GORE AVE. WHAHFj VANCOUVER, B. C. u a x e Time Temp, Cl/kg March 17, 1934 10:15 8.0 14.59 1 9 11^15 8,2 14.55 2 1 17'.15 8,5 14.35 2 4 10:00 8.0 14,09 2 8 16:50 8,5 13,55 2 9 16:30 8.2 15,16 S I 10:30 8.7 12.91 A P i \" i l 3 16:50 8.6 15.59 4 9:15 8,7 18,48 7 10:00 8.9 10 16:50 9.0 15,59 11 17:15 9,2 14.02 14 9:50 9.0 14,08 16 16:15 10.0 , 12.94 18 16:45 11.0 12.80 21 15:20 12.0 12.70 25 ' 11:45 11.4 12.58 25 17:00 11.5 10.61 28 10:50 11,0 10.61 50 15:00 11.5 10.47 May 2 11:15 11.0 8.65 5 11:20 10.0 8.82 7 15:50 10.2 10.99 9 16:50 11*0 . 10.46 TABLE a s m HYDROGRAPHIC DATA Samples taken at 6 foot level below surface on daylight flood tide. CRESCENT C % o D ^ t e Time Temp. Cl/kg May 18, 1933 13:30 14,0 15.67 22 17:00 14.0 15.57 25 17100 13.8 14.03 30 8:50 12*0 15.43 lune 1 10:30 13.5 15.18 5 16:00 15.7 11.44 7 15:30 15,3 11.09 12 8:00 13.5 15.62 15 11:00 17.. 7 15.47 19 14:30 18.5 14.86 22 16:30 19.5 12.88 27 8:00 17.0 13.77 29 8:30 17.7 14.01 July 3 15:00 17.8 9.43 8 17:00 17.7 11.91 11 8:00 15,8 12.61 13 10:00 16.7 13.74 I 5 13:30 18.0 14.92 17 16:30 18.8 10.42 19 17:00 19.5 10.08 TABLE . XXXIX (Cont inued) HYDROGRAPHIC DATA Samples taken, at 6 foot level below surface on daylight flood tide. . CRESCENT Date Time c. Temp. /oo 01/kg. July 21, 1933 17:00 20*0 11 .10 24 17:00 22.0 11.05 26 8:00 20.0 11.54 28 8:30 18,7 11.92 31 14:00 19.6 12.93 Aug* 2 16:00 19,0 10.41 ? 17:00 19.7 11.97 9 8:00 17.3 14.05 18 17:00 21.5 12.12 18 17:00 21.0 12.25 23 8:00 19.2 13.07 25 8:50 19.0 13.51 28 13:00 17.7 14.15 30 15:00 15.8 Sept. 1 14:30 18.5 14,35 6 8830 15.3 13.86 8 8:30 15.5 14.31 11 13:00 15*. 3 14.75 13 15:00 15.1 14.03 15 16:00 15.3 12.38 18 16:00 15.2 11.66 TABLE XXXK (Continued) . HyDHOGBAPHIC DATA Samples taken at 6 foot level below surface on daylight flood tide. GBESCINT Oct. Date Time c. Temp. /oo Cl/kg 21, 1933 8:00 13*5 11.94 25 10:00 11.3 13.50 29 16:00 13.5 14,70 30 13:00 12.0 15.04 2 16:30 14.5 . 14.99 4 17:00 15.0 15.33 6 8:00 12.7 15.60 10 11:30 12.5 15.30 12 13130 11.0 15.39 14 14:00 11.3 15.40 16 15:30 11.0 14.97 18 16:oo 10.7 14.57 20 17:00 9.5 14.11 23 9:30 9.0 14.58 25 11:30 10.7 15.09 27 13:30 10.8 15.08 31 15:30 10.2 15.20 3 8:00 9.0 14.42 6 8:30 8.5 15.31 8 10! 00 9.0 15.69 11 11:30 9.0 15.10 TABLE X X X K (Continued) B2DR0GRAPBI0 DATA Samples taken at 6 foot level below surface on daylight flood tide* CBESCMT Date Time o. Temp. 0 / /OO Cl/kg 13, 1933 13:30 9.3 14.25 15 14:30 9.0 14.63 17 15:00 9.0 14.84 20 9:00 8.5 14.90 23 11:00 10.0 14.90 27 14:00 8.0 15.53 2 8:00 7.7 14.45 4 8:00 5.5 14.32 6 9:00 7,0 14.68 8 10:30 6.7 13.93 12 13:00 6.5 15.36 14 14:00 6,5 15.31 20. 9:00 6,2 14.02 26 13:00 ' 4,6 15,25 28 14:00 6.0 15.20 2, 1934 8:00 -6*5 14.73 4 9:30 5iQ 14,25 6 10:00 7.2 15.54 8 10:30 6.7 15.35 12 13:00 7.0 14.23 17 17:00 6.7 14.55 Samples taken Date Jan* 19, 1954 25 27 29 31 Feb* 2 6 Mar, 20 22 24 27 30 Apr* 5 7 9 11 20 24 26 May 4 TABLE XXXIX (Continued) EYDROOPAPHIC DATA 6 foot level below surface on daylight flood tide. CRESCENT Time oe Temp. /oo Gl/kg 9:00 7.0 15.50 13:00 6.7 14.84 13:00 7.0 15.83 14:30 7.2 14.87 8:00 7.5 14,49 8:00 8.0 14.87 8:30 7.3 15,36 8:30 10.0 15.22 8:30 10.0 15,54 11:00 10.0 15.70 14:30 9.7 15,52 17:00 11.2 14,61 8:30 10.7 14,67 9:30 10.5 15.52 13:00 11.0 14.41 16:00 12.2 14.71 8:00 13.5 15.84 13:30 15.3 15.14 15:30 16.0 13,95 8:00 13.0 14.83 TABLE XL HYDROGRAPHIC DATA Samples taken at S meter depth from surface, PRINCE RUPERT Date Time c. Temp* pH 0 /oo Gl/kg Eeb, 1, 1954 16 500 4.5 14.18 5 16 500 4.4 15.11 8 16 515 4,7 15.08 IS 16 5 50 5*1 15.21 15 16 500 6,0 15.71 19 16:00 6,3 16.06 2S • 16 530 5*6 15.92 26 16 550 5*4 16.04 Mar« 1 16530 5.8 16,01 5 165 50 5,5 15.92 8 16 5 30 . 5,8 15 « 8J5 12 17 500 6,8 15*83 15 18 500 6.2 15.76 19 16 500 6.2 16.OS 22 16 540 6,8 15.90 26 16 5 30 7.2 15 & 51 29 18 500 6*7 16,38 Apr. 2 17 5 30 6,8 8,1 16*66 5 17 500 6.8 8.0 16*31 9 17 500 6.4 8*0 15.64 12 17 5 00 6,9 7,95 15.69 TABLE XL (Continued) HYDROGRAPHIC DATA Samples taken at 2 .mster depth from surface. PRINCE RUPERT Date Time c . Temp. pH /oo Cl/kg Apr. 16, 1954 17J00 7.0 8.0 16.21 25 •17:00 10.0 8,5 15.27 27 17:00 9.0 8,2 13.58 50 17:00 8.2 8.15 15. 26 May 3 17:00 7.8 8,0 15.40 7 17:50 7.8 8*08 12,99 10 17:30 8.4 8,0 12. 98 14 17:30 9.4 8.1 14.92 17 17!30 9,3 8.0 13.41 21 17 2 30 10.3 7.95 11,49 24 17:30 10.9 8,1 12*58 28 16:00 10,2 8.15 13.10 31 17:00 10.3 8,18 June 5 9:50 12. 6 12.58 7 17:00 12. 3 8.3 12.92 11 17:30 11. 6 8.25 IL2© 51 14 17:00 10.4 8.25 12.27 18 17:00 10.3 8© 2 12,59 21 17:oo 10.0 8.2 10,95 25 17 :00 11.2 8,25 13.44 28 17:30 11.5 8.26 14. 32 TABLE XL (Continued) B2DR0G-PAPHIC DATA Samples taken at 2 meter depth from surface. PRINCE RUPERT Time c \" Temp. pH o , • /oo Cl/kg By 1934 20:30 11.0 8© 25 14. 22 5 17:00 11.5 8.4 13,58 9 17:00 IX© 9 8,4 10,86 12 17:00 10.5 8.25 X3© 25 16 16:30 10.7 8,3 13.74 19 17:00 11.8 8.2 11,56 23 17:30 10.5 8.2 12,65 26 18:00 12.7 8,4 14.34 30 17:00 11.6 8.25 14.74 2 12.6 8.2 X2© 83 6 12*9 ' 8© 2 13.02 9 13.0- 8,3 13,96 13 X3©- 3 8,2 15.17 "@en ; edm:hasType "Thesis/Dissertation"@en ; edm:isShownAt "10.14288/1.0302554"@en ; dcterms:language "eng"@en ; ns0:degreeDiscipline "Zoology"@en ; edm:provider "Vancouver : University of British Columbia Library"@en ; dcterms:publisher "University of British Columbia"@en ; dcterms:rights "For non-commercial purposes only, such as research, private study and education. Additional conditions apply, see Terms of Use https://open.library.ubc.ca/terms_of_use."@en ; ns0:scholarLevel "Graduate"@en ; dcterms:title "The incidence of boring and sessile organisms on wooden structures in British Columbia coastal waters"@en ; dcterms:type "Text"@en ; ns0:identifierURI "http://hdl.handle.net/2429/38480"@en .