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Croll, James in correspondent 
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From:
John Tyndall
To:
James Croll
Date:
Undated
Source of text:
p. 104, Autobiographical Sketch of James Croll
Summary:

No summary available.

Contributor:
Tyndall Project
From:
John Tyndall
To:
James Croll
Date:
10th Feb. 1864
Source of text:
Add MS 41077, f. 9, BL
Summary:

No summary available.

Contributor:
Tyndall Project
From:
James Croll
To:
John Tyndall
Date:
Jan. 13th 1865
Source of text:
MS JT/1/TYP/1/65-6, RI
Summary:

No summary available.

Contributor:
Tyndall Project
From:
John Tyndall
To:
James Croll
Date:
14th. Jan. 1865
Source of text:
MS. 7777/08, Wellcome
Summary:

No summary available.

Contributor:
Tyndall Project
From:
James Croll
To:
Sir John Herschel
Date:
[4 February 1865]
Source of text:
RS:HS 5.299
Summary:

Sending his paper on the causes of change of climate, and would be glad of JH's comments and opinion on its worth.

Contributor:
John Herschel Project
From:
Sir John Herschel
To:
James Croll
Date:
[6 February 1865]
Source of text:
APS B.D25.L.7; draft: RS:HS 5.300 & C: 24.87-8
Summary:

In response to comments in a paper by JC, JH writes to establish his priority with respect to the significance of the revolution of the apsides of the earth's orbit and the eccentricity of the earth's orbit in affecting temperatures on the earth. JH had spelled this out in an 1830 paper for the Transactions of the Geological Society, and repeated it in his Outlines Astr.

Contributor:
John Herschel Project
From:
James Croll
To:
Sir John Herschel
Date:
[14 February 1865]
Source of text:
RS:HS 5.301
Summary:

Thanks for his letter concerning his own paper on the changes in climate. Points out parts where JH seems to have been mistaken in his views as expressed.

Contributor:
John Herschel Project
From:
Sir John Herschel
To:
James Croll
Date:
[17 February 1865]
Source of text:
RS:HS 5.302 & 24.93
Summary:

Thanks for his letter and comments. Is always pleased to have any omission pointed out. Comments on his theories of the changing of the climates.

Contributor:
John Herschel Project
From:
James Croll
To:
Sir John Herschel
Date:
[23 February 1865]
Source of text:
RS:HS 5.303
Summary:

Gives various references in answer to JH's queries. Further regarding climatic changes.

Contributor:
John Herschel Project
From:
Sir John Herschel
To:
James Croll
Date:
[30 May 1866]
Source of text:
unknown
Summary:

Thanks JC for his papers on 'ice-cap and eccentricities [of planets].' Comments on the papers, noting the interactions between geology and astronomy.

Contributor:
John Herschel Project
From:
Sir John Herschel
To:
James Croll
Date:
[14 August 1866]
Source of text:
unknown
Summary:

Thanks JC for his paper on the 'Influence of the Tidal Wave on the Moon's Motion.' Expresses disagreement with a number of aspects of JC's argument.

Contributor:
John Herschel Project
From:
James Croll
To:
Sir John Herschel
Date:
[18 August 1866]
Source of text:
RS:HS 5.304
Summary:

Thanks for letter and criticism of his own paper. Seems to have misunderstood most of his points. Explains some of his theories on the movement of the earth and tides.

Contributor:
John Herschel Project
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
From:
Charles Robert Darwin
To:
James Croll
Date:
10 Jan 1869
Source of text:
J. C. Irons 1896 , p. 215
Summary:

Apologises for having kept JC’s book so long; would like to keep it about ten days more.

Contributor:
Darwin Correspondence Project
From:
Charles Robert Darwin
To:
James Croll
Date:
31 Jan [1869]
Source of text:
American Philosophical Society (Mss.B.D25.361)
Summary:

Returns book with thanks. "Joyfully accepts" idea of the warming of Southern Hemisphere during glacial period in the Northern. Lyell is unwilling.

Mentions H. N. Moseley’s study of descent of glaciers [Proc. R. Soc. Lond. 17 (1869): 202–8].

CD greatly troubled by problem of age of the earth and calculations of Sir William Thomson. Asks about changes in the form of the globe.

Contributor:
Darwin Correspondence Project