Search:
4 Items
Page: 1
To Oswald Heer 8 March [1875]
Summary
Thanks OH for his book [see 9876]; agrees that the sudden appearance of many dicotyledons in the Upper Chalk is a perplexing phenomenon for the evolutionist.
| Author: | Charles Robert Darwin |
| Addressee: | Oswald Heer |
| Date: | 8 Mar [1875] |
| Classmark: | Zentralbibliothek Zürich (Nachlass Oswald Heer 213.2) |
| Letter no: | DCP-LETT-9881 |
From Oswald Heer 28 September 1875
Summary
Comments on Insectivorous plants.
Describes his own work on fossil flora of Eastern Siberia.
Discusses genus Ginkgo.
| Author: | Oswald Heer |
| Addressee: | Charles Robert Darwin |
| Date: | 28 Sept 1875 |
| Classmark: | DAR 166: 132 |
| Letter no: | DCP-LETT-10175 |
From Oswald Heer 1 March 1875
Summary
Comments on his Flora fossilis Arctica [vol. 3 (1875)]. Discusses successive appearance of plant families in geological periods. Relates plant development to rise of herbivorous mammals.
Comments on death of Charles Lyell.
| Author: | Oswald Heer |
| Addressee: | Charles Robert Darwin |
| Date: | 1 Mar 1875 |
| Classmark: | DAR 166: 130 |
| Letter no: | DCP-LETT-9876 |
From Oswald Heer 23 March 1875
Summary
Discusses his work [Flora fossilis Arctica, vol. 4, pt 1 (1876)].
Sends copy of [Fossile Pflanzen von Sumatra (1874)]. Comments on climate in Tertiary period, especially on Sumatra.
Comments on theory of Thomas Belt concerning climatic change in ice age.
| Author: | Oswald Heer |
| Addressee: | Charles Robert Darwin |
| Date: | 23 Mar 1875 |
| Classmark: | DAR 166: 131 |
| Letter no: | DCP-LETT-9901 |
Document type
| letter | (4) |
Author
| Heer, Oswald | (3) |
| Darwin, C. R. | (1) |
Addressee
| Darwin, C. R. | (3) |
| Heer, Oswald | (1) |
