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To J. E. Gray 1 July [1856]
Summary
Requests information on ranges of echinoderms for his essay on variation [Natural selection]. Are there genera with representative species in northern and southern seas, but none in tropics?
| Author: | Charles Robert Darwin |
| Addressee: | John Edward Gray |
| Date: | 1 July [1856] |
| Classmark: | Natural History Museum, Library and Archives (General Special Collections MSS DAR 69) |
| Letter no: | DCP-LETT-1915 |
Author
| Darwin, C. R. | (1) |
Addressee
| Gray, J. E. | (1) |
