From George Bentham 2 December [1856]
Summary
Cites cases of leguminous plants whose cleistogamic flowers produce more seed than perfect flowers. [See Forms of flowers, p. 326.]
Author: | George Bentham |
Addressee: | Charles Robert Darwin |
Date: | 2 Dec [1856] |
Classmark: | DAR 111: A75–6 |
Letter no: | DCP-LETT-11267 |
From W. D. Fox 19 December [1856]
Author: | William Darwin Fox |
Addressee: | Charles Robert Darwin |
Date: | 19 Dec [1856] |
Classmark: | DAR 77: 170 |
Letter no: | DCP-LETT-11799 |
From J. D. Hooker [early December 1856]
Author: | Joseph Dalton Hooker |
Addressee: | Charles Robert Darwin |
Date: | [early Dec 1856] |
Classmark: | DAR 100: 149 |
Letter no: | DCP-LETT-1966 |
From George Dickie 1 December 1856
Author: | George Dickie |
Addressee: | Charles Robert Darwin |
Date: | 1 Dec 1856 |
Classmark: | DAR 207: 16 |
Letter no: | DCP-LETT-2009 |
From T. V. Wollaston [11 or 18 December 1856]
Summary
Informs CD that the "dishonest mollusks" were collected in May 1855 in Porto Santo. Describes some Madeira species. Though believing in "species" more and more, these may be "mere insular modifications".
Author: | Thomas Vernon Wollaston |
Addressee: | Charles Robert Darwin |
Date: | [11 or 18] Dec 1856 |
Classmark: | DAR 205.3: 301 |
Letter no: | DCP-LETT-2013 |
From J. D. Hooker 7 December 1856
Summary
Has done New Zealand flora calculations. Results support CD’s theory of necessity of crossing. Trees tend to have separate sexes.
Author: | Joseph Dalton Hooker |
Addressee: | Charles Robert Darwin |
Date: | 7 Dec 1856 |
Classmark: | DAR 100: 113–14 |
Letter no: | DCP-LETT-2014 |
From J. D. Dana 8 December 1856
Summary
Agassiz has informed him that the mice and rats of Mammoth Cave are American in type.
Alludes to CD’s doubt of the principle that "progress of life on the globe is parallel with the development in different tribes". Outlines his own ideas on the "unfolding of the type-idea" and its "parallelism with the law of development in the embryo".
Author: | James Dwight Dana |
Addressee: | Charles Robert Darwin |
Date: | 8 Dec 1856 |
Classmark: | DAR 205.9: 378 |
Letter no: | DCP-LETT-2016 |
From H. C. Watson [28 December 1856]
Summary
Notes on the comparative rarity of intermediate forms between species, and the varying relationships those forms may have to one or both species between which they are intermediate.
Author: | Hewett Cottrell Watson |
Addressee: | Charles Robert Darwin |
Date: | [28 Dec 1856] |
Classmark: | DAR 98: A15–18 |
Letter no: | DCP-LETT-2023 |
From Thomas Davidson 29 December 1856
Summary
His experience confirms CD’s view that some species and even some genera of Brachiopoda are consistently more variable than others, and that such variable forms are variable in all localities and at all periods. Similarly a species that shows a lack of variability does so at all points in time and space. Discusses the causes of variability. [See Natural selection, p. 106.]
Author: | Thomas Davidson |
Addressee: | Charles Robert Darwin |
Date: | 29 Dec 1856 |
Classmark: | DAR 162: 116 |
Letter no: | DCP-LETT-2024 |
letter | (9) |
Hooker, J. D. | (2) |
Bentham, George | (1) |
Dana, J. D. | (1) |
Davidson, Thomas | (1) |
Dickie, George | (1) |
Darwin, C. R. | |
Hooker, J. D. | (2) |
Bentham, George | (1) |
Dana, J. D. | (1) |
Davidson, Thomas | (1) |
Dickie, George | (1) |
Fox, W. D. | (1) |
Watson, H. C. | (1) |
Wollaston, T. V. | (1) |