From Asa Gray 16 February 1857
Summary
Discusses the ranges of alpine species in U. S. and considers the possible migration routes of such species from Europe.
Lists those U. S. genera which he considers protean and describes the U. S. character of some genera which are protean in Europe.
Describes how he distinguishes introduced and aboriginal stocks of the same species.
| Author: | Asa Gray |
| Addressee: | Charles Robert Darwin |
| Date: | 16 Feb 1857 |
| Classmark: | DAR 165: 96 |
| Letter no: | DCP-LETT-2053 |
To Charles Lyell 11 February [1857]
Summary
Discusses a proposed expedition to Australia. Urges collecting and investigating productions of isolated islands. Recommends dredging the sea-bottom.
Mentions keeping Helix pomatia alive in sea-water.
| Author: | Charles Robert Darwin |
| Addressee: | Charles Lyell, 1st baronet |
| Date: | 11 Feb [1857] |
| Classmark: | American Philosophical Society (Mss.B.D25.145) |
| Letter no: | DCP-LETT-2050 |
To W. D. Fox 8 February [1857]
Summary
Birth of his sixth son [C. W. Darwin]. It is dreadful "to think of all the sendings to school and the professions afterwards".
CD is not well but has not the courage for water-cure again; trying mineral acids.
Working hard on the book [Natural selection]; is overwhelmed with riches in facts and interested in way facts fall into groups.
To his surprise [Helix pomatia] has withstood 14 days in salt water.
Pigeons’ skins come in from all parts of the world.
| Author: | Charles Robert Darwin |
| Addressee: | William Darwin Fox |
| Date: | 8 Feb [1857] |
| Classmark: | Christ’s College Library, Cambridge (MS 53 Fox 110) |
| Letter no: | DCP-LETT-2049 |
Matches: 2 hits
- … J. D. Hooker, 3 February [1850]). Fox had twelve children in all, five by his first marriage and seven by his second. Of these, four were boys. An allusion to the advanced stage of Ellen Sophia Fox’s pregnancy. Edith Darwin Fox was born on 13 February 1857 ( …
- … J. D. Hooker, 10 December [1856] , and letter from T. V. Wollaston, [11 or 18 December 1856] . On 22 January, after one of the Helices provided by Thomas Vernon Wollaston had survived the effects of immersion in salt water, CD began a new experiment with Helix pomatia and H. aspersa . In his Experimental book, p. 16 (DAR 157a), CD recorded on 5 February 1857 …
| letter | (3) |
| Darwin, C. R. | (1) |
| Fox, W. D. | (1) |
| Lyell, Charles | (1) |
| Darwin, C. R. | (3) |
| Fox, W. D. | (1) |
| Gray, Asa | (1) |
| Lyell, Charles | (1) |
