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From Edward Frankland   15 July 1873

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Summary

Sends sodium carbonate for Drosera experiments. Will try to determine what the solvent is.

Author:  Edward Frankland
Addressee:  Charles Robert Darwin
Date:  15 July 1873
Classmark:  DAR 164: 206
Letter no:  DCP-LETT-8979

From Edward Frankland   17 July 1873

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Summary

Is going to Switzerland, so analysis of Drosera washings will be delayed. Agrees with CD that solvent is probably pepsin.

Author:  Edward Frankland
Addressee:  Charles Robert Darwin
Date:  17 July 1873
Classmark:  DAR 164: 207
Letter no:  DCP-LETT-8981

From Edward Frankland   22 September 1873

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Summary

CD’s discovery of acidity of Drosera secretion is interesting. EF explains how hydrochloric acid can be detected and identified. [See Insectivorous plants, p. 88.]

Author:  Edward Frankland
Addressee:  Charles Robert Darwin
Date:  22 Sept 1873
Classmark:  DAR 58.1: 38–9
Letter no:  DCP-LETT-9062

From Edward Frankland   27 September 1873

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Summary

Has sent CD some pure distilled water for his Drosera experiments.

Author:  Edward Frankland
Addressee:  Charles Robert Darwin
Date:  27 Sept 1873
Classmark:  DAR 164: 208
Letter no:  DCP-LETT-9076

From Edward Frankland   10 October 1873

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Summary

The results of EF’s tests for acids in the secretion of Drosera are largely negative [see Insectivorous plants, p. 88].

Author:  Edward Frankland
Addressee:  Charles Robert Darwin
Date:  10 Oct 1873
Classmark:  DAR 58.1: 44–6
Letter no:  DCP-LETT-9094

From Edward Frankland   16 October 1873

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Summary

Sends some litmus paper for CD.

Author:  Edward Frankland
Addressee:  Charles Robert Darwin
Date:  16 Oct 1873
Classmark:  DAR 164: 209
Letter no:  DCP-LETT-9098
Document type
letter (6)
Addressee
Darwin, C. R.disabled_by_default
Correspondent
Darwin, C. R. (6)
Frankland, Edwarddisabled_by_default