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From Robert Hunt 19 July 1855
Summary
Discusses how best to simulate the light at a particular point on the earth’s surface using coloured glass; considers sunlight as composed of three "principles", varying in proportion according to latitude, which affect germination, lignification, and floriation.
| Author: | Robert Hunt |
| Addressee: | Charles Robert Darwin |
| Date: | 19 July 1855 |
| Classmark: | DAR 261.11: 17 |
| Letter no: | DCP-LETT-1721 |
Document type
| letter | (1) |
Author
| Hunt, Robert | (1) |
