RECORD: Darwin, C. R. [Notes on trout and breeding]. (1842) CUL-DAR208.72 Transcribed by Kees Rookmaaker (Darwin Online,

REVISION HISTORY: Transcribed from the microfilm by Kees Rookmaaker, corrections by John van Wyhe, 8.2010. RN1

NOTE: Editorial symbols used in the transcription:
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Reproduced with the permission of the Syndics of Cambridge University Library and William Huxley Darwin.


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.


1 Davy 1851.

[1 verso]


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/—

[6 verso (blank)]


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

[7 verso]

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, editor. 2002-. The Complete Work of Charles Darwin Online. (

File last updated 2 July, 2012