From William Duppa Crotch 25 January 1861
Summary
Physiological changes in Shetland ponies and seagulls resulting from change in diet.
Reports on the discovery of eyeless beetles in cellar [i.e., not caves]. How did they get there, and whence?
Author: | William Duppa Crotch |
Addressee: | Charles Robert Darwin |
Date: | 25 Jan 1861 |
Classmark: | DAR 47: 173–4 |
Letter no: | DCP-LETT-3052 |
From William Duppa Crotch 10 April 1865
Summary
Supports Atlantis hypothesis.
Author: | William Duppa Crotch |
Addressee: | Charles Robert Darwin |
Date: | 10 Apr 1865 |
Classmark: | DAR 161: 274 |
Letter no: | DCP-LETT-4811 |
From W. D. Crotch 24 October 1871
Summary
Gives possible explanation for retention of horns throughout the winter by female reindeer.
Work on Atlantis.
Author: | William Duppa Crotch |
Addressee: | Charles Robert Darwin |
Date: | 24 Oct 1871 |
Classmark: | DAR 88: 114–15 |
Letter no: | DCP-LETT-8031 |
From W. D. Crotch 17 November 1872
Summary
Horns of female reindeer disappear after their calves are dropped [see Descent, 2d ed., p. 503].
Lemmings in Norway.
Author: | William Duppa Crotch |
Addressee: | Charles Robert Darwin |
Date: | 17 Nov 1872 |
Classmark: | DAR 88: 116a–b |
Letter no: | DCP-LETT-8632 |
From W. D. Crotch 14 November 1873
Author: | William Duppa Crotch |
Addressee: | Charles Robert Darwin |
Date: | 14 Nov 1873 |
Classmark: | DAR 88: 127–8 |
Letter no: | DCP-LETT-9141 |