From Asa Gray 2 December 1872
Summary
CD’s finding the nervous system of Dionaea is wonderful.
Coiling of tendrils of climbing plants.
Thanks CD for the new book [Expression].
Author: | Asa Gray |
Addressee: | Charles Robert Darwin |
Date: | 2 Dec 1872 |
Classmark: | DAR 165: 182 |
Letter no: | DCP-LETT-8656 |
To Asa Gray 16 October [1862]
Summary
Lythrum salicaria is coming out clear.
Would be glad of Nesaea seed.
Is disappointed with Melastoma, but is sure there is something curious to be made out.
His experiments with poisons on Drosera lead him to conclude that it possesses something analogous to nervous matter.
Comments on natural hybrids of Verbascum.
Deplores the Civil War and the feelings it has fostered in Britain.
Author: | Charles Robert Darwin |
Addressee: | Asa Gray |
Date: | 16 Oct [1862] |
Classmark: | Gray Herbarium of Harvard University (81) |
Letter no: | DCP-LETT-3766 |
To Asa Gray 15 April [1867]
Summary
Thanks AG for his trouble about expression queries; wishes he had thought earlier of having them printed.
Is "plodding on" correcting Variation
and getting "a little amusement" from plant experiments. Oxalis is trimorphic like Lythrum.
Is continuing his experiments on seedling vigour.
Has heard hybrid potatoes can be produced by joining halves of different tubers.
Author: | Charles Robert Darwin |
Addressee: | Asa Gray |
Date: | 15 Apr [1867] |
Classmark: | Gray Herbarium of Harvard University (97) |
Letter no: | DCP-LETT-5442 |
From Asa Gray 6 October 1872
Author: | Asa Gray |
Addressee: | Charles Robert Darwin |
Date: | 6 Oct 1872 |
Classmark: | DAR 165: 181 |
Letter no: | DCP-LETT-8545 |
To Asa Gray 8 January 1873
Summary
Has received, through AG, a letter on Dionaea [from W. M. Canby] which has greatly interested him. CD asks AG to question his correspondent on whether it catches large or small insects.
Mary Treat will observe Drosera filiformis.
Author: | Charles Robert Darwin |
Addressee: | Asa Gray |
Date: | 8 Jan 1873 |
Classmark: | Archives of the Gray Herbarium, Harvard University (102) |
Letter no: | DCP-LETT-8728 |
To Asa Gray 22 October 1872
Summary
Spiralling of tendrils.
Has worked hard on Drosera.
Is interested in tracing the "nerves" of Dionaea which follow the vascular bundles. Finds he can paralyse half of the leaf by pricking it at a certain point.
Wishes AG to carry out two experiments on D. filiformis.
Has received AG’s Dubuque address [Am. J. Sci. 3d ser. 4 (1872): 282–98].
Author: | Charles Robert Darwin |
Addressee: | Asa Gray |
Date: | 22 Oct 1872 |
Classmark: | Gray Herbarium of Harvard University (100) |
Letter no: | DCP-LETT-8568 |
letter | (6) |
Darwin, C. R. | (4) |
Gray, Asa | (2) |
Gray, Asa | (4) |
Darwin, C. R. | (2) |
Darwin, C. R. | (6) |
Gray, Asa |