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 |
Croll, James | (9) |
Darwin, C. R. | (9) |