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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 |