[Letter, Charles R. Darwin to John Burdon-Sanderson, June 21, 1874] Darwin, Charles, 1809-1882
Charles Darwin, "Down" to John Burdon-Sanderson. He is concerned about anomolies between the action of pepsin and the Drosera ferment which he is trying to clear up; has read Sanderson's two articles on Dionaea and fears he has been misunderstood on one point. A.L.S., 2 p.
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