From B. D. Walsh [before 31 October 1868]
Summary
Beginning of extract from William Dell Hartman’s "Journal of the doings of Cic[ada?] septemdecim" [unidentified] in Pennsylvania in 1851.
| Author: | Benjamin Dann Walsh |
| Addressee: | Charles Robert Darwin |
| Date: | [before 31 Oct 1868] |
| Classmark: | DAR 81: 145 |
| Letter no: | DCP-LETT-5755 |
To B. D. Walsh 31 October 1868
Summary
Thanks BDW for extracts about "drumming" [of male Cicada to attract females].
Asa Gray and Hooker doubt that 13–year and 17–year Cicada forms should be considered distinct species. CD is inclined to agree with them.
Suggests observations be made of ratio of females to males in the rarer form.
| Author: | Charles Robert Darwin |
| Addressee: | Benjamin Dann Walsh |
| Date: | 31 Oct 1868 |
| Classmark: | Field Museum of Natural History, Chicago (Walsh 16) |
| Letter no: | DCP-LETT-6437 |
To Sven Nilsson 31 October [1868]
Summary
Thanks SN for the reference about the reindeer, received via Hooker.
CD wishes to ascertain whether there is any relation between the period of development of a character and its transmission to one sex alone.
| Author: | Charles Robert Darwin |
| Addressee: | Sven Nilsson |
| Date: | 31 Oct [1868] |
| Classmark: | Lund University Library Special Collections (Sven Nilsson papers) |
| Letter no: | DCP-LETT-6438 |
From Fritz Müller 31 October 1868
Summary
Writes on various observations and discoveries on dimorphic and trimorphic plants.
| Author: | Johann Friedrich Theodor (Fritz) Müller |
| Addressee: | Charles Robert Darwin |
| Date: | 31 Oct 1868 |
| Classmark: | DAR 142: 98, 103 |
| Letter no: | DCP-LETT-6439 |
From Samuel Owen Glenie to G. H. K. Thwaites [before 31 October 1868]
Summary
Relates some observations on the expression of elephants; they do not cry unless the eye is hurt or struck. "Perhaps Mr Darwin will like to know the above."
| Author: | Samuel Owen Glenie |
| Addressee: | George Henry Kendrick Thwaites |
| Date: | [before 31 Oct 1868] |
| Classmark: | DAR 165: 55 |
| Letter no: | DCP-LETT-6440 |
| letter | (5) |
| Darwin, C. R. | (2) |
| Glenie, S. O. | (1) |
| Müller, Fritz | (1) |
| Walsh, B. D. | (1) |
| Darwin, C. R. | (2) |
| Nilsson, Sven | (1) |
| Thwaites, G. H. K. | (1) |
| Walsh, B. D. | (1) |
| Darwin, C. R. | (4) |
| Walsh, B. D. | (2) |
| Glenie, S. O. | (1) |
| Müller, Fritz | (1) |
| Nilsson, Sven | (1) |
2.12 Allan Wyon, Royal Society medal
Summary
< Back to Introduction The Darwin medal of the Royal Society was awarded on a biennial basis from 1890 onwards, as a way of recognising individual achievement in the scientific fields to which Darwin himself had contributed. The first scientist to be…
