To Asa Gray 11 August [1858]
Summary
Species migration since the Pliocene. Effect of the glacial epoch. Present geographical distribution, especially similarities of mountain floras, explained by such migration; mountain summits as remnants of a once continuous flora and fauna.
Cross-fertilisation in Fumariaceae.
| Author: | Charles Robert Darwin |
| Addressee: | Asa Gray |
| Date: | 11 Aug [1858] |
| Classmark: | Archives of the Gray Herbarium, Harvard University (42 and 9a) |
| Letter no: | DCP-LETT-2321 |
Matches: 4 hits
- … To Asa Gray 11 August [1858] …
- … Gray Herbarium, Harvard University (42 and 9a) Charles Robert Darwin Shanklin 11 Aug [1858] Asa …
- … Asa Gray, 16 February 1857 . For Gray’s use of the information given in this letter, see letter to J. D. Hooker, 11 …
- … Gray, Asa. 1858–9. Diagnostic characters of new species of phænogamous plants, collected in Japan by Charles Wright, botanist of the US North Pacific Exploring Expedition … With observations upon the relations of the Japanese flora to that of North America, and of other parts of the northern temperate zone. [Read 14 December 1858 and 11 …
From J. D. Hooker and Charles Lyell to the Linnean Society 30 June 1858
Summary
Communicate papers by CD and A. R. Wallace on "The Laws which affect the Production of Varieties, Races, and Species". Explain that CD and Wallace have, independently and unknown to each other, arrived at the same theory to account for the appearance and perpetuation of specific forms, and that neither has yet published, although CD first sketched his theory in 1839. Give their reasons for arranging the joint presentation.
| Author: | Joseph Dalton Hooker; Charles Lyell, 1st baronet |
| Addressee: | Linnean Society |
| Date: | 30 June 1858 |
| Classmark: | Journal of the Proceedings of the Linnean Society (Zoology) 3 (1859): 45–6 |
| Letter no: | DCP-LETT-2299 |
To Louis Agassiz 21 February [1858]
Summary
Thanks LA for presentation copy of Contributions [to the natural history of the United States of America, vol. 1, pt 1: Essay on classification, and vol. 1, pt 2: North American Testudinata (1857)]. Flattered; CD sees there is much of highest interest to him.
| Author: | Charles Robert Darwin |
| Addressee: | Jean Louis Rodolphe (Louis) Agassiz |
| Date: | 21 Feb [1858] |
| Classmark: | Houghton Library, Harvard University (MS Am 1419: 279) |
| Letter no: | DCP-LETT-2217 |
To J. D. Hooker 13 [July 1858]
Summary
JDH’s letter to Wallace perfect. CD’s feelings about priority. Without Lyell’s and JDH’s intervention CD would have given up all claims to Wallace. Now planning 30-page abstract for a journal.
Observations on floral structure
and slave-making ants.
| Author: | Charles Robert Darwin |
| Addressee: | Joseph Dalton Hooker |
| Date: | 13 [July 1858] |
| Classmark: | DAR 114: 242 |
| Letter no: | DCP-LETT-2306 |
From J. D. Hooker 13–15 July 1858
Summary
Sends proofs [of "On the tendency of species to form varieties … ", read 1 July 1858, Collected papers 2: 3–19]. CD could publish his abstract [later the Origin] as a separate supplemental number of [Journal of the Linnean Society].
JDH has studied in detail CD’s manuscript on variable species in large and small genera and concurs with its consequences. Discusses methodological idiosyncrasies of systematists, e.g., Bentham, Robert Brown, and C. C. Babington, which complicate CD’s tabulations.
| Author: | Joseph Dalton Hooker |
| Addressee: | Charles Robert Darwin |
| Date: | [13 or 15] July 1858 |
| Classmark: | DAR 100: 116–19, 168 |
| Letter no: | DCP-LETT-2307 |
| letter | (5) |
| Darwin, C. R. | (3) |
| Hooker, J. D. | (2) |
| Lyell, Charles | (1) |
| Agassiz, Louis | (1) |
| Darwin, C. R. | (1) |
| Gray, Asa | (1) |
| Hooker, J. D. | (1) |
| Linnean Society | (1) |
| Darwin, C. R. | (4) |
| Hooker, J. D. | (3) |
| Agassiz, Louis | (1) |
| Gray, Asa | (1) |
| Linnean Society | (1) |
