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Croll, James in correspondent 
1860-1869::1868 in date 
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From:
Charles Robert Darwin
To:
James Croll
Date:
19 Sept 1868
Source of text:
DAR 143: 352
Summary:

Discusses papers by JC dealing with erosion. Comments on papers on the subject by J. B. Jukes, A. C. Ramsay, and William Whitaker. Formerly believed in power of the sea. Never fully realised the truth until reading JC’s papers.

Contributor:
Darwin Correspondence Project
From:
James Croll
To:
Charles Robert Darwin
Date:
23 Sept 1868
Source of text:
DAR 161: 261
Summary:

Sends two papers; glad CD appreciates two he has already sent. Cannot send two others on glaciers (Philosophical Magazine, 1866 and 1867).

Contributor:
Darwin Correspondence Project
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
From:
James Croll
To:
Charles Robert Darwin
Date:
2 Dec 1868
Source of text:
DAR 161: 262
Summary:

Sends abstract of his views on change of climate and a copy of a paper.

Contributor:
Darwin Correspondence Project
From:
James Croll
To:
Charles Robert Darwin
Date:
[2 Dec 1868]
Source of text:
DAR 50: E3–8
Summary:

Glacial climates.

Contributor:
Darwin Correspondence Project
From:
Charles Robert Darwin
To:
James Croll
Date:
4 Dec [1868]
Source of text:
American Philosophical Society (Mss.B.D25.)
Summary:

Acknowledges receipt of book and manuscript.

Contributor:
Darwin Correspondence Project