To William Waring 6 January 1874
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?
Author: | Charles Robert Darwin |
Addressee: | William Waring |
Date: | 6 Jan 1874 |
Classmark: | Kent History and Library Centre (CKS-U1906/Z/1) |
Letter no: | DCP-LETT-9228 |
To William Waring 12 January [1874]
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).
Author: | Charles Robert Darwin |
Addressee: | William Waring |
Date: | 12 Jan [1874] |
Classmark: | Kent History and Library Centre (CKS-U1906/Z/1) |
Letter no: | DCP-LETT-9238 |
To William Waring 13 April 1874
Summary
WW’s information accords with other accounts lately received. CD had formed an erroneous opinion on the subject.
Author: | Charles Robert Darwin |
Addressee: | William Waring |
Date: | 13 Apr 1874 |
Classmark: | Kent History and Library Centre (CKS-U1906/Z/1) |
Letter no: | DCP-LETT-9408 |
1874 | (3) |