[SCIENCE] DARWIN, CHARLES, Scientist. Autograph letter signed to Professor Oliver, Kent, 17 November 1871, 1 page, 8vo, AN INTERESTING SCIENTIFIC LETTER. Darwin, most widely renowned for his publication of "The Origin of Species", writes to Oliver on the subject of plants: "You have been very kind to take so much trouble for me; the information is amply sufficient, as I wished to learn how far the roots cd act on rocks, not caring about the nutrition of the plants." -- GRAY, ASA, Botanist. Autograph letter signed to Mr. Norton, Botanic Gardens, 14 November, 1 page, 12mo, accepting an invitation to meet Goldwin Smith -- AGASSIZ, LOUIS, Zoologist & Geologist. Autograph letter signed to Mr. Renard, Cambridge, 12 December 1864, 1 page, 8vo, envelope panel included, tape on seam, forwarding a letter from "Mr. Hillman, our Counsel in Rome." -- SILLIMAN, BENJAMIN, Scientist. Autograph letter signed, New Haven, 2 December 1856, 2 pages, 12mo, Silliman is content that his remarks be used "provided I may not appear arrogant or obtrusive." -- PASTEUR, LOUIS, Chemist. Printed calling card with autograph note, 3 lines. Together five items.