To Mary Anne Theresa Whitby 2 September [1847]
Summary
Questions Mrs W on difference in flight capacity of male and female silkworm moths and asks her for results of experiments he suggested she do with silkworms to determine hereditariness of dark "eyebrows". [See Variation 1: 302.]
Author: | Charles Robert Darwin |
Addressee: | Mary Anne Theresa Whitby |
Date: | 2 Sept [1847] |
Classmark: | American Philosophical Society (Mss.B.D25.61) |
Letter no: | DCP-LETT-1113 |
To M. A. T. Whitby 14 October [1847]
Summary
Thanks for a suite of male and female specimens of Lepidoptera. Lack of difference in size of wings surprises CD; the female’s being smaller than male’s in early growth is new to him. Will ask a friend in India for comparable facts.
Author: | Charles Robert Darwin |
Addressee: | Mary Anne Theresa Whitby |
Date: | 14 Oct [1847] |
Classmark: | Lehigh University Libraries Special Collections (Honeyman Collection) |
Letter no: | DCP-LETT-1128 |
To M. A. T. Whitby 12 August [1849]
Summary
Thanks MATW for the results of her experiments on the inheritance of caterpillar peculiarities and would be grateful for any further observations on differences in structure or habits between silkworm breeds, or peculiarities in inheritance.
Author: | Charles Robert Darwin |
Addressee: | Mary Anne Theresa Whitby |
Date: | 12 Aug [1849] |
Classmark: | New York Academy of Medicine (MS 15) |
Letter no: | DCP-LETT-1194 |
Whitby, M. A. T. | (3) |