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From Daniel Oliver 19 September 1860
Summary
CD’s observations on preference of Drosera for milk and nitrogenous fluids, and the effect of nitrate of ammonia are interesting. Asks whether CD is satisfied that the effect is not due to density of fluid or to a chemical irritant. His own observations suggest such possibilities.
| Author: | Daniel Oliver |
| Addressee: | Charles Robert Darwin |
| Date: | 19 Sept 1860 |
| Classmark: | DAR 58.1: 12–13 |
| Letter no: | DCP-LETT-2921 |
From Daniel Oliver 25 September 1860
Summary
His results with pure gum on Drosera spathulata entirely support CD’s opinion. Other observations on insectivorous plants.
| Author: | Daniel Oliver |
| Addressee: | Charles Robert Darwin |
| Date: | 25 Sept 1860 |
| Classmark: | DAR 58.1: 1–3 |
| Letter no: | DCP-LETT-2927 |
