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To Charles Lyell   [19 February 1840]

Summary

Remarks on his illness and treatment.

Discusses MS [of Coral reefs] and changes in his view of coral reefs since Journal of researches. Mentions C. G. Ehrenberg’s observations on coral reefs.

Author:  Charles Robert Darwin
Addressee:  Charles Lyell, 1st baronet
Date:  [19 Feb 1840]
Classmark:  American Philosophical Society (Mss.B.D25.21)
Letter no:  DCP-LETT-554

To Charles Lyell   1 June [1867]

Summary

Comments on a discussion of humming-birds by the Duke of Argyll [in The reign of law (1867)].

Encloses article by Henry Parker on the Duke’s book [Saturday Rev. 23 (1867): 82–4].

Author:  Charles Robert Darwin
Addressee:  Charles Lyell, 1st baronet
Date:  1 June [1867]
Classmark:  American Philosophical Society (Mss.B.D25.328)
Letter no:  DCP-LETT-5558

To Charles Lyell   9 June [1867]

Summary

Discusses hybridisation in cowslip and primrose.

Mentions proposed visit.

Author:  Charles Robert Darwin
Addressee:  Charles Lyell, 1st baronet
Date:  9 June [1867]
Classmark:  American Philosophical Society (Mss.B.D25.329)
Letter no:  DCP-LETT-5566

To Charles Lyell   12 June 1867

Summary

CD probably advised omitting mention of experiments suggesting that oxlips, cowslips, and primroses could be produced from the seed of a single plant

Author:  Charles Robert Darwin
Addressee:  Charles Lyell, 1st baronet
Date:  12 June 1867
Classmark:  DAR 146: 326
Letter no:  DCP-LETT-5568F

To Charles Lyell   18 July [1867]

Summary

Chapter 12 [of Variation] finished;

too late to include information on six-fingered men. Plans for book on man [Descent].

Mentions coral reefs of Tahiti.

Discusses volcanic islands; volcanoes of the Cordillera.

Author:  Charles Robert Darwin
Addressee:  Charles Lyell, 1st baronet
Date:  18 July [1867]
Classmark:  American Philosophical Society (Mss.B.D25.331)
Letter no:  DCP-LETT-5584

To Charles Lyell   22 August [1867]

Summary

Thanks CL for comments [on Variation].

Thinks Pangenesis would be important step in biology if admitted as probable.

Introduction to French edition [of Origin] has injured the book.

Author:  Charles Robert Darwin
Addressee:  Charles Lyell, 1st baronet
Date:  22 Aug [1867]
Classmark:  American Philosophical Society (Mss.B.D25.332)
Letter no:  DCP-LETT-5612

To Charles Lyell   4 October [1867]

Summary

Replies to CL’s further comments [on Variation].

Discusses direct action of the environment as a cause of variation.

Author:  Charles Robert Darwin
Addressee:  Charles Lyell, 1st baronet
Date:  4 Oct [1867]
Classmark:  American Philosophical Society (Mss.B.D25.334)
Letter no:  DCP-LETT-5640

To Charles Lyell   31 October [1867]

Summary

Describes seeds transported in locust dung. Discusses other cases of transport and migration.

Author:  Charles Robert Darwin
Addressee:  Charles Lyell, 1st baronet
Date:  31 Oct [1867]
Classmark:  American Philosophical Society (Mss.B.D25.336)
Letter no:  DCP-LETT-5659

To Charles Lyell   7 December [1867]

Summary

Discusses transport of frog spawn and young molluscs by birds.

Author:  Charles Robert Darwin
Addressee:  Charles Lyell, 1st baronet
Date:  7 Dec [1867]
Classmark:  American Philosophical Society (Mss.B.D25.337)
Letter no:  DCP-LETT-5708

To Charles Lyell   [9 March 1868]

Summary

Asks to borrow Philosophical Transactions, vol. 157, pt 2 (1868).

Author:  Charles Robert Darwin
Addressee:  Charles Lyell, 1st baronet
Date:  [9 Mar 1868]
Classmark:  Department of Special Collections, Kenneth Spencer Research Library, University of Kansas (KU MSS P87: 2)
Letter no:  DCP-LETT-5768

To Charles Lyell   [21 February – 4 April 1841]

Summary

Answers a number of queries from Lyell concerning geography and geology of Chiloé Island and its relationship to the Cordilleras.

Asks about "perched rocks" on Jura and notes their relevance to Louis Agassiz’s theory. Discusses Agassiz’s view on Jura.

Mentions seeing Robert Brown.

Notes R. I. Murchison’s discovery of shells in central England.

Weakness of negative evidence.

Author:  Charles Robert Darwin
Addressee:  Charles Lyell, 1st baronet
Date:  [21 Feb – 4 Apr 1841]
Classmark:  American Philosophical Society (Mss.B.D25.26)
Letter no:  DCP-LETT-590

To Charles Lyell   [March 1841]

Summary

Discusses the role of ice in determining the geological features of the Jura. Mentions view of Agassiz. Objects to idea of "a [sea of ice] carrying rocks". Notes Agassiz’s earlier view of "ice expanded in the line of the Great Swiss Valley". Comments on Pentlands.

Author:  Charles Robert Darwin
Addressee:  Charles Lyell, 1st baronet
Date:  [Mar 1841]
Classmark:  American Philosophical Society (Mss.B.D25.27)
Letter no:  DCP-LETT-592

To Charles Lyell   [9 March 1841]

Summary

Defends his theory [in "Parallel roads of Glen Roy" (1839), Collected papers 1: 87–137] against the view that the "roads" were formed by glacial action.

Author:  Charles Robert Darwin
Addressee:  Charles Lyell, 1st baronet
Date:  [9 Mar 1841]
Classmark:  American Philosophical Society (Mss.B.D25.23)
Letter no:  DCP-LETT-594

To Charles Lyell   [12 March 1841]

Summary

Discusses at length Louis Agassiz’s book [Études sur les glaciers (1840)] and Agassiz’s explanation of moraines. Defends his own theory of the importance of floating ice. Relates glacier theory to his own interpretation of Glen Roy.

Mentions a paper he is writing on South American boulders and till [Collected papers 1: 145–63].

Author:  Charles Robert Darwin
Addressee:  Charles Lyell, 1st baronet
Date:  [12? Mar 1841]
Classmark:  American Philosophical Society (Mss.B.D25.25)
Letter no:  DCP-LETT-595

To Charles Lyell   [3 November 1869]

Summary

Takes "much to heart" solar evidence for short age of the earth. Cites evidence for "long endurance of our existing continents". Comments on process of denudation.

Author:  Charles Robert Darwin
Addressee:  Charles Lyell, 1st baronet
Date:  [3 Nov 1869]
Classmark:  American Philosophical Society (Mss.B.D25.346)
Letter no:  DCP-LETT-5974

To Charles Lyell   6 [July 1841]

Summary

Discusses various types of coral reefs on which he has been collecting notes. Views of C. G. Ehrenberg. His conception of the formation of Bermuda.

Pessimistic about the effect of his poor health on his scientific work.

Author:  Charles Robert Darwin
Addressee:  Charles Lyell, 1st baronet
Date:  6 [July 1841]
Classmark:  American Philosophical Society (Mss.B.D25.24)
Letter no:  DCP-LETT-602

To Charles Lyell   [19 March 1868]

Summary

The second volume of Lyell’s [Principles, 10th ed.] gives a "fair history of the progress of opinion on Species".

Pleased by allusion to Pangenesis: "an untried hypothesis is always dangerous ground".

Looks forward to chapter on domestication and on man.

Author:  Charles Robert Darwin
Addressee:  Charles Lyell, 1st baronet
Date:  [19 Mar 1868]
Classmark:  American Philosophical Society (Mss.B.D25.349)
Letter no:  DCP-LETT-6023

To Charles Lyell   [September–December 1842]

Summary

Discusses relationship of subsidence to the formation of coral reefs.

Author:  Charles Robert Darwin
Addressee:  Charles Lyell, 1st baronet
Date:  [Sept–Dec 1842]
Classmark:  American Philosophical Society (Mss.B.D25.30)
Letter no:  DCP-LETT-605

To Charles Lyell   14 July 1868

Summary

Comments favourably, though often differing, on articles by G. H. Lewes.

Discusses claim of Agassiz [in A journey in Brazil (1868)] that he found evidence of glaciers in Brazil. Suggests sponsoring an expedition to test these claims.

Author:  Charles Robert Darwin
Addressee:  Charles Lyell, 1st baronet
Date:  14 July 1868
Classmark:  American Philosophical Society (Mss.B.D25.352)
Letter no:  DCP-LETT-6275

To Charles Lyell   [5 and 7 October 1842]

Summary

Cancelled: same as DCP-LETT-649. Discusses growth of various species of coral. Explains significance of dead reefs.

Describes meeting of the Council of the Geological Society; the controversy involving Edward Charlesworth.

Mentions conversations with William Lonsdale about Lonsdale’s work on corals and the financial support for his work.

Murchison’s views on glaciation in Wales.

Agassiz’s observations at Glen Roy.

Author:  Charles Robert Darwin
Addressee:  Charles Lyell, 1st baronet
Date:  5 and 7 Oct 1842
Classmark:  CUL DAR 146: 149
Letter no:  DCP-LETT-645
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