RECORD: Darwin, C. R. n.d. The experiment on the crossed Kidney Bean. CUL-DAR205.7.137. Edited by John van Wyhe (Darwin Online, http://darwin-online.org.uk/)

REVISION HISTORY: Transcribed by Christine Chua and edited by John van Wyhe 3.2023. 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 volume CUL-DAR205.7 contains notes on hybridism, sterility and pigeons.


[137]

The experiment on the crossed Kidney Beans & on my sweet-peas & in my Pouter & Fantail pigeons & so in cattle & sheep convinces me that there is more variability in the successive generations of mongrels than in the first generation of mongrels & this is important point of resemblance between Hybrids & Mongrels

Mem. How much variability in my Hybrids from carnation and Spanish pink in 1st generation

/over

Ch IX

[137v]

I have doubts whether variability any parallelism about greater variability of Hybrids in succeeding generations & ordinary generation variability, & the affection of reproductive systems is true.—

I think it does hold-constant hybrids & mongrels in the first generation alone: Why shd in the one case all the offspring be intermediate between those 2 parents, & why in others take in all sorts of degrees of both parents; except that reproductive system has been affected


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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 9 May, 2023