From C. G. Ehrenberg 13 March 1845
Summary
Regrets J. D. Hooker did not visit Berlin.
Describes legal difficulties of Ernst Dieffenbach.
Lists species of Infusoria found in dust samples. Discusses origin of Atlantic dust. Discusses Infusoria in cosmetic paint from Tierra del Fuego and Patagonian earth. Thanks CD for samples. Would like samples from sea-bed.
Author: | Christian Gottfried Ehrenberg |
Addressee: | Charles Robert Darwin |
Date: | 13 Mar 1845 |
Classmark: | DAR 39: 59a–c |
Letter no: | DCP-LETT-837 |
From C. G. Ehrenberg 8 April 1845
Summary
Discusses table of Atlantic dust samples. Thinks dust came from South America.
Discusses Patagonian tuff samples.
Answers CD’s query about material from Pampas. Believes deposit made in brackish water.
Criticises account of Atlantic dust in F. J. F. Meyen [Reise um die Erde (1834–5)].
Author: | Christian Gottfried Ehrenberg |
Addressee: | Charles Robert Darwin |
Date: | 8 Apr 1845 |
Classmark: | DAR 39: 60–1b |
Letter no: | DCP-LETT-853 |