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
From:
Edward Frankland
To:
Charles Robert Darwin
Date:
15 Apr 1874
Source of text:
DAR 58.1: 49–50
Summary:
Sends some phosphates of lime free of animal matter [see Insectivorous plants, p. 109].
Contributor:
Darwin Correspondence Project
From:
Edward Frankland
To:
Charles Robert Darwin
Date:
26 Apr 1874
Source of text:
DAR 164: 210
Summary:
Bullfinches’ instinctive capacity for removing nectaries from cowslips.
Contributor:
Darwin Correspondence Project
From:
Edward Frankland
To:
Charles Robert Darwin
Date:
30 Apr 1874
Source of text:
DAR 164: 211
Summary:
Variation in bullfinches’ instinctive ability to remove nectaries and ovaries from cowslips.
Contributor:
Darwin Correspondence Project
From:
Edward Frankland
To:
Charles Robert Darwin
Date:
9 Oct 1874
Source of text:
DAR 58.1: 97–8
Summary:
Sends information CD requested on phosphate of ammonia and on nitrogenous substances produced during putrefaction of animal matter.
Contributor:
Darwin Correspondence Project
From:
Edward Frankland
To:
Charles Robert Darwin
Date:
[before 6 June 1876]
Source of text:
The John Rylands Library, The University of Manchester
Summary:
Sends analysis of burnt and unburnt samples.
Contributor:
Darwin Correspondence Project