RECORD: Darwin, C. R. & Francis Darwin. [1875-1876]. Draft of Cross and self fertilisation, folio 415. CUL-DAR77.87r. Edited by John van Wyhe (Darwin Online, http://darwin-online.org.uk/)

REVISION HISTORY: Transcribed by Christine Chua and edited by John van Wyhe 2.2023. RN1

NOTE: See record in the Darwin Online manuscript catalogue, enter its Identifier here. Reproduced with permission of the Syndics of Cambridge University Library and William Huxley Darwin. The volumes CUL-DAR 76-79 contain material for Darwin's book Cross and self fertilisation (1876).

The draft is mostly in the hand of Francis Darwin with lengthy insertions by Darwin. The page is crossed.


(415

Ch A

, as with instance of Eschscholtzia & Ipomoea, are likewise benefitted greatly by a cross with a fresh stock. These latter cases, as well as those in which self-fertilised plants were naturally intercrossed with no advantage to the offspring, show us in the plainest cleverest manner, especially when castrated with the results of crossing two plants belonging to of the same sub-variety from brought from distant gardens, or of broken [illeg] two distinct subvarieties, that it is not the mere act of crossing by closely two individuals [illeg] which benefits is advantageous to the offspring. But it is the fact of The [4 words illeg] depends on the two plants when artificial fertilising acquiring by a somewhat darker outline, [illeg] from being, and having been subjected to somewhat different conditions, [8 words in pencil illeg] and having thus acquired a form belong to slight different varieties some slight constitutional difference.


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Citation: John van Wyhe, ed. 2002-. The Complete Work of Charles Darwin Online. (http://darwin-online.org.uk/)

File last updated 29 May, 2023