To Daniel Oliver 11 September [1860]
Summary
Requests observations on Drosera and Dionaea,
and asks DO to look up Buchanan and Wight on insectivorous plants ["Conspectus of Indian Utricularia", Hooker’s J. Bot. 1 (1849): 372–4].
Author: | Charles Robert Darwin |
Addressee: | Daniel Oliver |
Date: | 11 Sept [1860] |
Classmark: | DAR 261.10: 9 (EH 88205993) |
Letter no: | DCP-LETT-2913 |
To Daniel Oliver 15 [September 1860]
Summary
Thanks for reference to Annales des Sciences Naturelles.
Requests DO observe rate at which Australian Drosera closes.
On detection of nitrogen in organic fluids.
Author: | Charles Robert Darwin |
Addressee: | Daniel Oliver |
Date: | 15 [Sept 1860] |
Classmark: | DAR 261.10: 10 (EH 88205994) |
Letter no: | DCP-LETT-2917 |
To Daniel Oliver 21 [September 1860]
Summary
Lists of nitrogenous organic fluids that produce contraction in Drosera, and details of how to reproduce results.
Author: | Charles Robert Darwin |
Addressee: | Daniel Oliver |
Date: | 21 [Sept 1860] |
Classmark: | DAR 261.10: 11 and part of 17 (EH 88205995, 88206001) |
Letter no: | DCP-LETT-2923 |
To Daniel Oliver [22–3 September 1860]
Summary
Sends address.
Author: | Charles Robert Darwin |
Addressee: | Daniel Oliver |
Date: | [22–3 Sept 1860] |
Classmark: | DAR 261.10: 12 (EH 88205996) and part of DAR 261.10: 18 (EH 88206002) |
Letter no: | DCP-LETT-2924 |
To Daniel Oliver [29 September 1860]
Summary
Requests Dionaea now that he knows Drosera so well. Wants to compare fluids secreted; in Drosera they are acid and have antiseptic effect on meat.
Author: | Charles Robert Darwin |
Addressee: | Daniel Oliver |
Date: | [29 Sept 1860] |
Classmark: | DAR 261.10: 15 (EH 88205999) |
Letter no: | DCP-LETT-2941 |
To Daniel Oliver 24 [September 1860]
Summary
Admires DO’s correlation of spiny tree species and dry hot climate. CD suggests that spines, like strange aroma of desert plants, protect against browsing where there are few plants.
Fragrance and unisexuality.
Dimorphism in Viola tricolor.
Author: | Charles Robert Darwin |
Addressee: | Daniel Oliver |
Date: | 24 [Sept 1860] |
Classmark: | DAR 261.10: 22 (EH 88206006) |
Letter no: | DCP-LETT-2960 |
To Daniel Oliver 27 [September 1860]
Summary
Thinks he has worked out simple mechanism of movement in Drosera. Believes he is correct that gum has no effect.
Thanks for Trécul paper ["Organisation des glandes pédicellées de la feuille du Drosera rotundifolia", C. R. Hebd. Acad. Sci. 40: 1355–8; Ann. Sci. Nat. (Bot.) 3d ser. 3: 303–11].
Chloroform paralyses plants in 30 seconds.
Author: | Charles Robert Darwin |
Addressee: | Daniel Oliver |
Date: | 27 [Sept 1860] |
Classmark: | DAR 261.10: 23 (EH 88206007) |
Letter no: | DCP-LETT-2965 |