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From Bernard Peirce Brent   15 July 1862

Summary

Continues breeding guinea-pigs to test effects of warmth on gestation period. Concludes period is ten weeks and warmth has no influence. Offers CD the specimens.

Awaits Variation.

Author:  Bernard Peirce Brent
Addressee:  Charles Robert Darwin
Date:  15 July 1862
Classmark:  DAR 160: 301
Letter no:  DCP-LETT-3660
Document type
letter (1)
Author
Addressee
Correspondent
Brent, B. P.[X]
Darwin, C. R.[X]
Date
letter