RECORD: Darwin, C. R. 1842. [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. RN1

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.


[1]

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.

[1v]

6

Mr Bunbury says Miers has described in Linn: Transacts, a Brazilian plant in Lin. Transacts, it has three stamens intermediate between Orchis & other plants — & Wallich has described Indian Plant. — June /42/—

[6v (blank)]

7

June /42/

You 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

[7v]

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.


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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 25 September, 2022