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From William Marshall 2 June 1875
Summary
Discusses feather as case of evolutionary atavism.
Will soon publish on siliceous sponges
and the skin of caterpillars.
| Author: | William Adolf Ludwig (William) Marshall |
| Addressee: | Charles Robert Darwin |
| Date: | 2 June 1875 |
| Classmark: | DAR 171: 48 |
| Letter no: | DCP-LETT-10006 |
From William Marshall 21 August 1875
Summary
Doubts ostrich descended from reptiles. Its ancestors true birds. Of course, all birds descended from reptiles. Compares foetus of birds to that of reptiles.
| Author: | William Adolf Ludwig (William) Marshall |
| Addressee: | Charles Robert Darwin |
| Date: | 21 Aug 1875 |
| Classmark: | DAR 171: 49 |
| Letter no: | DCP-LETT-10130 |
Document type
| letter | (2) |
Addressee
| Darwin, C. R. | (2) |
Correspondent
| Darwin, C. R. | (2) |
| Marshall, William | (2) |
