From:
Edward Frankland
To:
Charles Robert Darwin
Date:
15 July 1873
Source of text:
DAR 164: 206
Summary:
Sends sodium carbonate for Drosera experiments. Will try to determine what the solvent is.
Contributor:
Darwin Correspondence Project
From:
Edward Frankland
To:
Charles Robert Darwin
Date:
17 July 1873
Source of text:
DAR 164: 207
Summary:
Is going to Switzerland, so analysis of Drosera washings will be delayed. Agrees with CD that solvent is probably pepsin.
Contributor:
Darwin Correspondence Project
From:
Edward Frankland
To:
Charles Robert Darwin
Date:
22 Sept 1873
Source of text:
DAR 58.1: 38–9
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.]
Contributor:
Darwin Correspondence Project
From:
Edward Frankland
To:
Charles Robert Darwin
Date:
27 Sept 1873
Source of text:
DAR 164: 208
Summary:
Has sent CD some pure distilled water for his Drosera experiments.
Contributor:
Darwin Correspondence Project
From:
Edward Frankland
To:
Charles Robert Darwin
Date:
10 Oct 1873
Source of text:
DAR 58.1: 44–6
Summary:
The results of EF’s tests for acids in the secretion of Drosera are largely negative [see Insectivorous plants, p. 88].
Contributor:
Darwin Correspondence Project
From:
Edward Frankland
To:
Charles Robert Darwin
Date:
16 Oct 1873
Source of text:
DAR 164: 209
Summary:
Sends some litmus paper for CD.
Contributor:
Darwin Correspondence Project
