To J. S. Henslow [10]–13 March 1835
Summary
The termination of the voyage has been decided – September 1836.
The earthquake of Concepción.
His geological observations (since November). Can now prove both sides of the Andes have recently risen to considerable heights.
Zoological collection.
Plans to cross the Cordilleras.
| Author: | Charles Robert Darwin |
| Addressee: | John Stevens Henslow |
| Date: | [10]–13 Mar 1835 |
| Classmark: | Royal Botanic Gardens, Kew (Henslow letters: 25 DAR/1/1/25) |
| Letter no: | DCP-LETT-272 |
To J. S. Henslow 18 April 1835
Summary
Has just returned from crossing the Cordilleras. Geological observations of formations representing great epochs of violence which broke up the earth’s crust. Shells at over 12000 feet. Silicified trees in sandstone formations at great heights. Red snow and viviparous lizards. Botanical specimens.
| Author: | Charles Robert Darwin |
| Addressee: | John Stevens Henslow |
| Date: | 18 Apr 1835 |
| Classmark: | Royal Botanic Gardens, Kew (Henslow letters: 26 DAR/1/1/26) |
| Letter no: | DCP-LETT-274 |
To J. S. Henslow 12 [August] 1835
Summary
Looks forward to seeing volcanoes in Galapagos Islands.
Has altered his views on Cordillera formations as a result of another trip. Discusses his theory of their origin and history.
| Author: | Charles Robert Darwin |
| Addressee: | John Stevens Henslow |
| Date: | 12 [Aug] 1835 |
| Classmark: | Royal Botanic Gardens, Kew (Henslow letters: 27 DAR/1/1/27) |
| Letter no: | DCP-LETT-283 |
