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 |
Author
| Darwin, C. R. | (1) |
Addressee
| Lyell, Charles | (1) |
Correspondent
| Darwin, C. R. | (1) |
| Lyell, Charles | (1) |
