From Charles Lyell 1–2 May 1856
Summary
Urges CD to publish his theory with small part of data.
Corrects names of land shells on list of shells picked up at Down.
Discusses transport of Ancylus from one river-bed to another by water-beetle.
"I hear that when you & Hooker & Huxley & Wollaston got together you made light of all Species & grew more & more unorthodox."
Mentions discussion of old Atlantis by Oswald Heer.
Comments on Helix and Nanina.
Mentions beetle discovered with small bag of eggs of water-spider under wing.
Madeira evidence favours single species birth-place theory.
Author: | Charles Lyell, 1st baronet |
Addressee: | Charles Robert Darwin |
Date: | 1–2 May 1856 |
Classmark: | DAR 205.3: 282 |
Letter no: | DCP-LETT-1862 |
From Charles Lyell 17 June 1856
Summary
CD forgets an author [CD himself in Coral reefs] "who, by means of atolls, contrived to submerge archipelagoes (or continents?), the mountains of which must originally have differed from each other in height 8,000 (or 10,000?) feet".
CL begins to think that all continents and oceans are chiefly post-Eocene, but he admits that it is questionable how far one is at liberty to call up continents "to convey a Helix from the United States to Europe in Miocene or Pliocene periods".
Will CD explain why the land and marine shells of Porto Santo and Madeira differ while the plants so nearly agree?
Author: | Charles Lyell, 1st baronet |
Addressee: | Charles Robert Darwin |
Date: | 17 June 1856 |
Classmark: | DAR 146: 475 |
Letter no: | DCP-LETT-1905 |
From Charles Lyell [1 July 1856]
Summary
To cast doubt on CD’s view that volcanic action is associated with elevation of land, CL suggests that local oscillations in strata underlying volcanoes could also explain how active volcanoes have uplifted fossil deposits of marine shells. Overall he is more inclined to believe that recent volcanoes belong to areas of subsidence rather than of elevation.
Author: | Charles Lyell, 1st baronet |
Addressee: | Charles Robert Darwin |
Date: | [1 July 1856] |
Classmark: | The University of Edinburgh Centre for Research Collections (Lyell collection Coll-203/A3/2: 132–6) |
Letter no: | DCP-LETT-1915A |
letter | (3) |
Darwin, C. R. | (3) |
Darwin, C. R. | (3) |
Lyell, Charles | (3) |