From:
Charles Robert Darwin
To:
James Croll
Date:
24 Nov 1868
Source of text:
DAR 143: 353
Summary:
Comments on glaciers in North America.
Asks if glacial periods have occurred alternately in the Northern and Southern Hemispheres. Relevant to his glacial discoveries in South America: "it would have been an immense relief to my mind if I could have assumed … this". CD wishes to discuss subject in new edition of Origin [5th].
Contributor:
Darwin Correspondence Project