Search: 1870-1879 in date 
Darwin, C. R. in correspondent 
Waring, William (b) in correspondent 
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From:
Charles Robert Darwin
To:
William Waring
Date:
6 Jan 1874
Source of text:
Kent History and Library Centre (CKS-U1906/Z/1)
Summary:

CD has previously received information on colours of greyhounds. Now asks whether breeders rear all puppies, and, if not, do they selectively rear more males or females?

Contributor:
Darwin Correspondence Project
From:
William Waring
To:
Charles Robert Darwin
Date:
9 Jan 1874
Source of text:
DAR 90: 76–8
Summary:

Breeders normally destroy weak and puny puppies in large litters, but would keep females if only one or two.

Contributor:
Darwin Correspondence Project
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From:
Charles Robert Darwin
To:
William Waring
Date:
12 Jan [1874]
Source of text:
Kent History and Library Centre (CKS-U1906/Z/1)
Summary:

CD requests WW to ask a large breeder of greyhounds whether the increase in litters requires that some puppies be destroyed. If so, is it sufficient to destroy merely the small and weak? Would this result in more males or females being destroyed?

CD once used the Field to tabulate ratios of female to male births in greyhounds (110: 100).

Contributor:
Darwin Correspondence Project
From:
Charles Robert Darwin
To:
William Waring
Date:
13 Apr 1874
Source of text:
Kent History and Library Centre (CKS-U1906/Z/1)
Summary:

WW’s information accords with other accounts lately received. CD had formed an erroneous opinion on the subject.

Contributor:
Darwin Correspondence Project
From:
William Waring
To:
Charles Robert Darwin
Date:
13 Apr 1874
Source of text:
DAR 90: 44–5
Summary:

On proportion of sexes in litters of greyhounds.

Contributor:
Darwin Correspondence Project
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