Sets out some of his ideas on the effects of disuse on an organ. Disuse as a cause of reduction.
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The Charles Darwin Collection
The Darwin Correspondence Project is publishing letters written by and to the naturalist Charles Darwin (1809–1882). Complete transcripts of letters are being made available through the Project’s website (www.darwinproject.ac.uk) after publication in the ongoing print edition of The Correspondence of Charles Darwin (Cambridge University Press 1985–). Metadata and summaries of all known letters (c. 15,000) appear in Ɛpsilon, and the full texts of available letters can also be searched, with links to the full texts.
Sets out some of his ideas on the effects of disuse on an organ. Disuse as a cause of reduction.
Thanks GJR for his letter, regrets pressure of other work prevents his giving GJR’s remarks the attention they deserve. GJR makes clearer how an organ that has started to decrease will go on decreasing.
Encloses a copy of a letter from H. Spencer giving his opinion on GJR’s views on disuse and a draft of GJR’s reply to Spencer.
Comments on Spencer’s terms.
Speaks of visiting GJR at the Brown Institution.
Invites GJR to visit.
Thanks GJR for copy of his book [Christian prayer and general laws (1874)].
Discusses breeding and sterility.
Discusses experiments to test Pangenesis. Cites useful references.
Suggests GJR visit Kew gardens.
Urges GJR to visit Hooker at Kew.
Discourages grafting ears of rabbits. Suggests comb of fowl.
Describes accounts of potato grafting in a German journal.
Would like to see papers [on potato grafting] mentioned by CD.
CD has doubtless seen case in Gardeners’ Chronicle of vine in which scion has affected the stock [P. Grieve, "Singular sport upon a grape vine", Gard. Chron. (1875): 21].
Is sending plants from cut-leaved vine.
Invites GJR to visit.
"When in presence of my ladies do not talk about experiments on animals."
Returns papers [unidentified].
One on inheritance destitute of meaning. How can "force" act without any material on which to act? Discussion must assume truth of some such theory as Pangenesis.
Discusses revisions for Variation, 2d ed.
Discusses experiments involving graft-hybrids.
Alludes to Pangenesis.
Describes experiments designed to produce graft-hybrid. Has achieved adhesion in great majority of experiments. Too early to tell what ultimate success will be.
Comments on GJR’s experiments.
Looks forward to reading CD’s statements about reflex action in Insectivorous plants.
Has prepared paper ["Physiology of the nervous system of Medusae", Rep. BAAS (1876): 158–63] in which he insists on occurrence of reflex action in absence of nerves. Would like to cite CD’s authority for occurrence of reflex action in plants.
Will propose GJR for membership in Linnean Society.
Discusses GJR’s grafting experiments.
Sends specimens of grafted potatoes. Describes grafting experiments designed to prove possibility of graft-hybrids, and thus, Pangenesis.
CD is circulating certificate proposing GJR for membership in Linnean Society.
Discusses hybrid potatoes from Germany.