From:
Richard William Griffiths
To:
Charles Robert Darwin
Date:
Dec 1877
Source of text:
DAR 165: 227
Summary:
A sheep-breeder friend has found that he can produce twins and triplets in his flock by "a sudden supply of improved feeding stuff" at time of conception. This would appear to remove the objection CD refers to in Descent that animals supplied with an excess of food become sterile.
Contributor:
Darwin Correspondence Project
