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 |
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 |
letter | (7) |
Darwin, C. R. | (4) |
Croll, James | (3) |