From Henry Holland [c. April 1862]1
My dear Charles
I write a few lines to thank you for your letter of this mg. & to express my satisfaction in the account you give me of your little boy. Pray let me hear of his progress from time to time2
Pasteur’s Memoir, to which you allude, is a very able & convincing one—3 He completely pushes Pouchet from the field.4 I am rather surprized that he does not refer (or, I think, does not) to Ehrenberg’s papers in the Transs. of the Berlin Academy 10 or 12 years ago; cataloguing some 250 to 300 forms of organic life, which he found at different altitudes in the atmosphere above Berlin.5 If I recollect rightly, he collected these matters by processes analogous in kind to those employed by Pasteur. He sent me his Memoirs at the time, but I scarcely know what has become of them; as I keep very few papers
Ever yours very sincerely | H Holland
Louis Pasteur’s memoir "is a very able and convincing one" ["Mémoire sur les corpuscles organisés qui existent dans l’atmosphère", Ann. Sci. Nat. (Zool.) 3d ser. 16 (1861): 5–98].
Please cite as
Darwin Correspondence Project, “Letter no. 3490,” accessed on 9 December 2016, http://www.darwinproject.ac.uk/DCP-LETT-3490