To Henry Doubleday 1 March [1868]
Summary
Has been interested in copy of HD’s letter to H. T. Stainton on numerical proportions of the sexes of insects. Do they vary during different years?
Does he have opinions about the courtships of butterflies?
Will send a copy of his paper on Primula when it is published. [See 5997.]
| Author: | Charles Robert Darwin |
| Addressee: | Henry Doubleday |
| Date: | 1 Mar [1868] |
| Classmark: | George W. Platzman (private collection) |
| Letter no: | DCP-LETT-5966A |
To Henry Doubleday 20 March [1868]
Summary
CD asks about HD’s observation of sexual call of Coleoptera.
Also comments on statements by collectors that they breed more females than males from caterpillars. CD had thought this might be accounted for by the collection of largest and finest caterpillars, but Alexander Wallace says the collectors take large and small equally. Does HD agree with Wallace?
| Author: | Charles Robert Darwin |
| Addressee: | Henry Doubleday |
| Date: | 20 Mar [1868] |
| Classmark: | American Philosophical Society (Mss.B.D25.) |
| Letter no: | DCP-LETT-6027 |
From Henry Doubleday 8 March 1868
Summary
Proportion of sexes in Lepidoptera.
Sexual preference.
Role of coloration [see Descent 1: 311–12].
| Author: | Henry Doubleday |
| Addressee: | Charles Robert Darwin |
| Date: | 8 Mar 1868 |
| Classmark: | DAR 85: B47–8 |
| Letter no: | DCP-LETT-5997 |
From Henry Doubleday 28 March 1868
Summary
On the proportion of sexes in moths; Lepidoptera females command higher prices; quotes Staudinger’s catalogue [see Descent 1: 311–12].
Ticking of Anobium tessellatum [see Descent 1: 385].
| Author: | Henry Doubleday |
| Addressee: | Charles Robert Darwin |
| Date: | 28 Mar 1868 |
| Classmark: | DAR 82: A11–12, DAR 86: A94 |
| Letter no: | DCP-LETT-6064 |
| letter | (4) |
| Darwin, C. R. | (2) |
| Doubleday, Henry | (2) |
| Darwin, C. R. | (2) |
| Doubleday, Henry | (2) |
