From:
Ferdinand Vandeveer Hayden
To:
Charles Robert Darwin
Date:
14 June 1870
Source of text:
DAR 166: 123
Summary:
Sends maps of U. S. Far West for CD to follow explorations.
Contributor:
Darwin Correspondence Project
Sends maps of U. S. Far West for CD to follow explorations.
Orange-tip butterfly at rest imitates a flower.
The argus pheasant cannot be explained by natural selection.