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DCP-LETT-5961

From:
Charles Robert Darwin
To:
John Bush
Date:
29 Feb [1868]
Source of text:
Private collection
Summary:

Writes at Frank Buckland’s suggestion. Can JB provide any information on the proportion of sexes in rats?

Do male rats fight for the possession of the female? Are they polygamous?

Contributor:
Darwin Correspondence Project

DCP-LETT-6072

From:
John Bush
To:
Charles Robert Darwin
Date:
30 Mar 1868
Source of text:
DAR 83: 161-2
Summary:

His impression is that male rats outnumber females. Males are pugnacious and polygamous. Gives details of the inheritance of colour in a colony he kept.

Contributor:
Darwin Correspondence Project
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DCP-LETT-6084

From:
Charles Robert Darwin
To:
John Bush
Date:
2 Apr [1868]
Source of text:
Private collection
Summary:

Thanks JB for his information. Has heard of analogous cases to JB’s observations on [colours of] crossed rats; the offspring of white and grey mice are stated to be either white or grey and never piebald.

Contributor:
Darwin Correspondence Project
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