Search: Cupples, George in author 
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1860-1869::1869::06 in date 
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From:
George Cupples
To:
Charles Robert Darwin
Date:
[1 June 1869]
Source of text:
DAR 85: B56
Summary:

Note on proportion of sexes born in sheep.

Contributor:
Darwin Correspondence Project
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From:
George Cupples
To:
Charles Robert Darwin
Date:
20 June 1869
Source of text:
DAR 86: 58–9
Summary:

On proportion of sexes in litters of dogs.

Contributor:
Darwin Correspondence Project
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