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To William Marshall   29 May 1875

Summary

Comments on WM’s paper about ostrich feathers.

Author:  Charles Robert Darwin
Addressee:  William Adolf Ludwig (William) Marshall
Date:  29 May 1875
Classmark:  American Philosophical Society (Mss.B.D25.469)
Letter no:  DCP-LETT-10000

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 (3)
Correspondent
Darwin, C. R.[X]
Marshall, William[X]
Date
1875
05 (1)
06 (1)
08 (1)
letter