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To T. C. Eyton 4 March [1872]
Summary
Thanks for facts about ducks.
Thinks TCE will be converted to principle of evolution if he continues testing facts for and against it. Natural selection is another question.
| Author: | Charles Robert Darwin |
| Addressee: | Thomas Campbell Eyton |
| Date: | 4 Mar [1872] |
| Classmark: | Cadbury Research Library: Special Collections, University of Birmingham (EYT/1/43) |
| Letter no: | DCP-LETT-8235 |
From Alexander Agassiz 4 March 1872
Summary
Thanks for new [6th] edition of Origin.
Is working on Echini.
The more material he gets the less easy it is to diagnose a genus or species. Has little doubt that "classification is nothing but the most arbitrary convenient tool, depending upon the material at our command at a special time".
| Author: | Alexander Agassiz |
| Addressee: | Charles Robert Darwin |
| Date: | 4 Mar 1872 |
| Classmark: | G. R. Agassiz ed. 1913, p. 119 |
| Letter no: | DCP-LETT-8236 |
Author
| Agassiz, Alexander | (1) |
| Darwin, C. R. | (1) |
Addressee
| Darwin, C. R. | (1) |
| Eyton, T. C. | (1) |
Correspondent
| Darwin, C. R. | |
| Agassiz, Alexander | (1) |
| Eyton, T. C. | (1) |
