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 |