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From J. S. Burdon Sanderson 25 June 1873
Summary
Informs CD of the effects of certain salts and other chemicals on animals.
Comments on CD’s results with Drosera. Suggests some experiments.
| Author: | John Scott Burdon Sanderson, 1st baronet |
| Addressee: | Charles Robert Darwin |
| Date: | 25 June 1873 |
| Classmark: | DAR 58.1: 116–19 |
| Letter no: | DCP-LETT-8949 |
From J. S. Burdon Sanderson 28 July [1873]
Summary
A hasty answer to CD’s letter [8987] of 25 July. Mentions Dr Osler’s observations on behaviour of colourless blood corpuscles in solutions of sodium and potassium salts of same strength.
| Author: | John Scott Burdon Sanderson, 1st baronet |
| Addressee: | Charles Robert Darwin |
| Date: | 28 July [1873] |
| Classmark: | DAR 58.1: 28–9 |
| Letter no: | DCP-LETT-8988 |
From J. S. Burdon Sanderson 13 August [1873]
Summary
Answers CD’s questions of 25 July [8987] about temperatures at which cold-blooded animals are killed.
Doubts heat rigor was induced in Drosera. Gives his view of the relation of excitability to increase in temperature.
Suggests experiment to show that electrical changes in plant are the same as in animal muscle and nerve [see Insectivorous plants, p. 318].
| Author: | John Scott Burdon Sanderson, 1st baronet |
| Addressee: | Charles Robert Darwin |
| Date: | 13 Aug [1873] |
| Classmark: | DAR 58.1: 34–7 |
| Letter no: | DCP-LETT-9008 |
