2 Items
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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 Susan Darwin 23 April 1835
Summary
His trip across the Andes and back was his most successful excursion: can clearly demonstate that the western part of the double line of mountains is much older, with fossil shells at 12000ft; the eastern line may be as modern as the Patagonian plains. If proved, this is an important fact in the theory of the formation of the world. Has found petrified trees.
| Author: | Charles Robert Darwin |
| Addressee: | Susan Elizabeth Darwin |
| Date: | 23 Apr 1835 |
| Classmark: | DAR 223 |
| Letter no: | DCP-LETT-275 |
Document type
| letter | (2) |
Author
| Darwin, C. R. | (2) |
Addressee
| Darwin, S. E. | (1) |
| Henslow, J. S. | (1) |
Correspondent
| Darwin, C. R. | |
| Darwin, S. E. | (1) |
| Henslow, J. S. | (1) |
