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From John Downing   13 November 1873

Summary

Is pleased that CD found the letters from Bell’s Weekly Messenger to the point.

Encloses extracts relating to benefits derived by animals from altered conditions of life.

Encloses notes on deterioration of short-horns from inbreeding. Breeders agree with him on benefits of introducing fresh blood into inbred stocks.

Author:  John Downing
Addressee:  Charles Robert Darwin
Date:  13 Nov 1873
Classmark:  DAR 162: 241
Letter no:  DCP-LETT-9140

From John Downing   29 January 1874

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Summary

On proportion of sexes in births of cattle; variations in families. Encloses a letter from J. G. Grove on proportions of sexes in animals.

The limitation of inbreeding.

Author:  John Downing
Addressee:  Charles Robert Darwin
Date:  29 Jan 1874
Classmark:  DAR 90: 79–84
Letter no:  DCP-LETT-9259
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1873 (1)
1874 (1)