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To Thomas Campbell Eyton   18 June [1860]

Summary

Asks about the period of gestation in dogs.

Author:  Charles Robert Darwin
Addressee:  Thomas Campbell Eyton
Date:  18 June [1860]
Classmark:  American Philosophical Society (Mss.B.D25.218)
Letter no:  DCP-LETT-2835

To W. D. Fox   18 June [1860]

Summary

Has WDF ever observed musk ducks laying eggs in high places? The case bears on retention of aboriginal habits.

Also wants data on period of gestation of dog breeds. [See Variation 1: 30.]

Author:  Charles Robert Darwin
Addressee:  William Darwin Fox
Date:  18 June [1860]
Classmark:  Christ’s College Library, Cambridge (MS 53 Fox 129)
Letter no:  DCP-LETT-2836
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