To Francis Darwin 25 June [1879]
Summary
Suggests experiments to test the response of radicles to light. Considers an alternative term for heliotropism.
Will be curious to have FD’s spiral theory about circumnutation explained to him.
| Author: | Charles Robert Darwin |
| Addressee: | Francis Darwin |
| Date: | 25 June [1879] |
| Classmark: | DAR 211: 56 |
| Letter no: | DCP-LETT-12122 |
From Charles Moore 15 May 1879
Summary
Sends an ammonite from the Upper Lias, which has Balanus-like bodies on surface. He wants CD’s interpretation. Discusses possible function of aptychi, siphuncular tube, and operculum in ammonites.
| Author: | Charles Moore |
| Addressee: | Charles Robert Darwin |
| Date: | 15 May 1879 |
| Classmark: | DAR 171: 233 |
| Letter no: | DCP-LETT-12055 |
Document type
| letter | (2) |
Author
| Darwin, C. R. | (1) |
| Moore, Charles (a) | (1) |
Addressee
| Darwin, C. R. | (1) |
| Darwin, Francis | (1) |
Correspondent
| Darwin, C. R. | (2) |
| Darwin, Francis | (1) |
| Moore, Charles (a) | (1) |
