Charles Darwin Letters

[Letter, Charles R. Darwin to John Burdon-Sanderson, September 14, 1873] Darwin, Charles, 1809-1882


Charles Darwin, "Down" to John Burdon-Sanderson. Darwin asks for help in obtaining pure animal substances - fibrin, albumin, mucin and others for future tests of the digestive powers of the plants.

Item Media

Item Citations and Data


Images provided for research and reference use only. Permission to publish, copy or otherwise use these images must be obtained from Rare Books and Special Collections: