RECORD: Darwin, C. R. 1842. Summer 1842 Notebook: 6e-7e (excised pages) [Notes on trout and breeding; Brazilian plants; selecting cattle and sheep]. CUL-DAR208.72. Edited by John van Wyhe (Darwin Online, http://darwin-online.org.uk/)
REVISION HISTORY: Transcribed by Kees Rookmaaker, corrections by John van Wyhe, 8.2010. RN3
NOTE: See record in the Darwin Online manuscript catalogue, enter its Identifier here. Reproduced with the permission of the Syndics of Cambridge University Library and William Huxley Darwin. The volume CUL-DAR208 contains notebook leaves excised by Darwin.
72a
Salmonia p. 58.1 relates case of red-fleshed trout with darker backs introduced from one Scotch lake into another, where the breed was white fleshed —
the young had flesh less red than parents & in 20 years the variety was lost.
(Quoted)
1 Davy 1851.
72b
Mr Bunbury says Miers has described in Linn: Transacts. a Brazilian plant intermediate between Orchis & other plants— & Wallich has described Indian Plant.— 2 June /42/ — in Lin. Transacts. it has three stamens
72c
June /42/
2cYou can select cattle & sheep for horns & yet no difference in calves — how is this in young pigeons — dogs — cattle? As we see the frame of animals can adapt itself to course of life, as in trades there is no reason, why the peculiarities shd be born, — may come in corresponding time of life of offspring — No peculiarity in external
72cv
structure can be concepcional, as limbs &c &c only appear late in pregnancy, & then may just as well be born a tendency to alter or assume some form late in youth, — only facts can decide —
some peculiarities may be early impressed & others later — All poultry with same down-feathers.
Citation: John van Wyhe, ed. 2002-. The Complete Work of Charles Darwin Online. (http://darwin-online.org.uk/)
File last updated 1 July, 2025