RECORD: Darwin, C. R. [1877?].10.31. Lycopodium (Selaginella) / Draft of Cross and self fertilisation. CUL-DAR209.4.241-242. Edited by John van Wyhe (Darwin Online, http://darwin-online.org.uk/)
REVISION HISTORY: Transcribed by Christine Chua and edited by John van Wyhe 9.2022. 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 volume CUL-DAR209.4 contains materials for Darwin's book Movement in plants (1880).
Draft of Cross and self fertilisation in the hand of Ebenezer Norman with corrections by Darwin.
"Norman, Ebenezer, 1835/6-1923. 1854- Schoolmaster at Down and from 1856 and many years thereafter copyist for CD. 1856 Aug. 17 First payment for copying in CD's Account book (Down House MS). Many thereafter. CCD6:444. 1857 CD to Hooker, "I am employing a laboriously careful Schoolmaster". CCD6:443. 1858 CD to Hooker, "I can get the Down schoolmaster to do it [i.e. transcribe] on my return". CCD7:130. 1871 Banker's clerk in Deptford." (Paul van Helvert & John van Wyhe, Darwin: A Companion, 2021)
[241 and 242]
Lycopodium Selaginella
Oct 31
Fig. 41
[Figure] (same scale no lettering)
Selaginella (Kraussii?): circumnutation of very young g plant,— traced in darkness, from 8° 45' a.m to 10° P.m. Oct 31st—
[242v]
[text excised]
[Table]
Again, all the crossed plants are again higher than their antagonists; and their average height is 77.41 inches, whereas that average height of the self-fertilised is 52.83 inches, or as 100 to 68.
I attended closely to the fertility of the plants of this third generation. Thirty flowers on
[Cross and self fertilisation, p. 32: "Again all the crossed plants are higher than their antagonists: their average height is 77.41 inches, whereas that of the self-fertilised is 52.83 inches, or as 100 to 68.
I attended closely to the fertility of the plants of this third generation. Thirty flowers on the crossed plants were crossed with pollen from other crossed plants of the same generation, and the twenty-six capsules thus produced contained, on an average, 4.73 seeds; whilst thirty flowers on the self-fertilised plants, fertilised with the pollen from the same flower, produced twenty-three capsules, each containing 4.43 seeds."]
Citation: John van Wyhe, ed. 2002-. The Complete Work of Charles Darwin Online. (http://darwin-online.org.uk/)
File last updated 7 December, 2022