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To A. D. Bartlett 15 September 1871
Summary
CD questions ADB on the mode of feeding of geese and on the existence of variations in the structure of the bill; is trying to trace gradations in structure and habits.
| Author: | Charles Robert Darwin |
| Addressee: | Abraham Dee Bartlett |
| Date: | 15 Sept 1871 |
| Classmark: | Houghton Library, Harvard University (Autograph File, D) |
| Letter no: | DCP-LETT-7944 |
To A. D. Bartlett 20 September [1871]
Summary
Asks whether any goose sifts water with its beak.
| Author: | Charles Robert Darwin |
| Addressee: | Abraham Dee Bartlett |
| Date: | 20 Sept [1871] |
| Classmark: | Archives of the New York Botanical Garden (Charles Finney Cox Collection) |
| Letter no: | DCP-LETT-7952 |
Correspondent
| Bartlett, A. D. | (2) |
| Darwin, C. R. | (2) |
