To James Croll 9 August 1877
Summary
Comments on JC’s paper ["On the tidal retardation argument for the age of the earth", Rep. BAAS (1876): 88–9].
Author: | Charles Robert Darwin |
Addressee: | James Croll |
Date: | 9 Aug 1877 |
Classmark: | DAR 143: 356 |
Letter no: | DCP-LETT-11097 |
To James Croll 19 September 1868
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.
Author: | Charles Robert Darwin |
Addressee: | James Croll |
Date: | 19 Sept 1868 |
Classmark: | DAR 143: 352 |
Letter no: | DCP-LETT-6380 |
To James Croll 24 November 1868
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].
Author: | Charles Robert Darwin |
Addressee: | James Croll |
Date: | 24 Nov 1868 |
Classmark: | DAR 143: 353 |
Letter no: | DCP-LETT-6473 |
To James Croll 4 December [1868]
Summary
Acknowledges receipt of book and manuscript.
Author: | Charles Robert Darwin |
Addressee: | James Croll |
Date: | 4 Dec [1868] |
Classmark: | American Philosophical Society (Mss.B.D25.) |
Letter no: | DCP-LETT-6491 |
To James Croll 10 January 1869
Summary
Apologises for having kept JC’s book so long; would like to keep it about ten days more.
Author: | Charles Robert Darwin |
Addressee: | James Croll |
Date: | 10 Jan 1869 |
Classmark: | J. C. Irons 1896, p. 215 |
Letter no: | DCP-LETT-6547F |
To James Croll 31 January [1869]
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.
Author: | Charles Robert Darwin |
Addressee: | James Croll |
Date: | 31 Jan [1869] |
Classmark: | American Philosophical Society (Mss.B.D25.361) |
Letter no: | DCP-LETT-6585 |
To James Croll 6 February [1869]
Summary
Consoling to CD that JC gives "a little more age to the world".
Cites article by Henry Moseley ["On the mechanical possibility of the descent of glaciers", Proc. R. Soc. Lond. 17 (1869): 202–8].
Mentions article by A. R. Clarke on shape of the globe.
Author: | Charles Robert Darwin |
Addressee: | James Croll |
Date: | 6 Feb [1869] |
Classmark: | American Philosophical Society (Mss.B.D25.) |
Letter no: | DCP-LETT-6603 |
To James Croll 24 February [1869]
Summary
Thanks JC for his proofs of article on the movement of glaciers.
Author: | Charles Robert Darwin |
Addressee: | James Croll |
Date: | 24 Feb [1869] |
Classmark: | American Philosophical Society (Mss.B.D25.271) |
Letter no: | DCP-LETT-6630 |
To James Croll 19 July [1871]
Summary
Introduces E. L. Youmans to correspondent. Youmans is seeking small monographs by the most competent English authors [for his International Scientific Series].
Author: | Charles Robert Darwin |
Addressee: | James Croll |
Date: | 19 July [1871] |
Classmark: | Wellcome Collection (MS.7781/1–32 item 27) |
Letter no: | DCP-LETT-7874 |
From James Croll 22 October 1881
Summary
Thanks for presentation copy of Earthworms.
Author: | James Croll |
Addressee: | Charles Robert Darwin |
Date: | 22 Oct 1881 |
Classmark: | DAR 161: 267 |
Letter no: | DCP-LETT-13421 |
From James Croll 23 September 1868
Summary
Sends two papers; glad CD appreciates two he has already sent. Cannot send two others on glaciers (Philosophical Magazine, 1866 and 1867).
Author: | James Croll |
Addressee: | Charles Robert Darwin |
Date: | 23 Sept 1868 |
Classmark: | DAR 161: 261 |
Letter no: | DCP-LETT-6388 |
From James Croll 2 December 1868
Summary
Sends abstract of his views on change of climate and a copy of a paper.
Author: | James Croll |
Addressee: | Charles Robert Darwin |
Date: | 2 Dec 1868 |
Classmark: | DAR 161: 262 |
Letter no: | DCP-LETT-6489 |
From James Croll [2 December 1868]
Summary
Glacial climates.
Author: | James Croll |
Addressee: | Charles Robert Darwin |
Date: | [2 Dec 1868] |
Classmark: | DAR 50: E3–8 |
Letter no: | DCP-LETT-6489F |
From James Croll 4 February 1869
Summary
Argues for great age of earth before the Cambrian period. Opposes measuring age from secular cooling. Opposes Sir William Thomson. Lyell’s error on secular cooling.
Thanks for Moseley citation ["On the mechanical possibility of the descent of glaciers", Proc. R. Soc. Lond. 17 (1869): 202–8].
In Edinburgh he feels out of touch with latest developments.
Author: | James Croll |
Addressee: | Charles Robert Darwin |
Date: | 4 Feb 1869 |
Classmark: | DAR 161: 263 |
Letter no: | DCP-LETT-6599 |
From James Croll 15 February 1869
Summary
Thanks for abstract of Moseley’s paper on motion of glaciers [see 6599]. Reading it convinced him that Tyndall’s received view is wrong. Has formed a new view, which he has sent to Philosophical Magazine [4th ser. 37 (1869): 201–6].
Author: | James Croll |
Addressee: | Charles Robert Darwin |
Date: | 15 Feb 1869 |
Classmark: | DAR 161: 264 |
Letter no: | DCP-LETT-6616 |
From James Croll 23 June 1869
Summary
Thanks for presentation copy of Origin [5th ed.].
Clarifies his point on north and south glacial periods. Supports CD’s view that temperate plants will move up mountains during the alternation.
Author: | James Croll |
Addressee: | Charles Robert Darwin |
Date: | 23 June 1869 |
Classmark: | DAR 161: 265 |
Letter no: | DCP-LETT-6799 |
From James Croll 17 August 1871
Summary
Refused to write a treatise on geological time.
His paper on W. B. Carpenter’s theory of ocean currents is appearing soon.
Author: | James Croll |
Addressee: | Charles Robert Darwin |
Date: | 17 Aug 1871 |
Classmark: | DAR 161: 266 |
Letter no: | DCP-LETT-7908 |
Darwin, C. R. | (9) |
Croll, James | (8) |
Croll, James | (9) |
Darwin, C. R. | (8) |