From:
Charles Robert Darwin
To:
Edward Frankland
Date:
29 May [1879]
Source of text:
The John Rylands Library, The University of Manchester
Summary:
Hearty thanks for the two bottles of pure water.
Contributor:
Darwin Correspondence Project
From:
Charles Robert Darwin
To:
Edward Frankland
Date:
27 Apr [1876]
Source of text:
The John Rylands Library, The University of Manchester
Summary:
Requests permission to call upon EF any morning from Saturday through Tuesday.
Contributor:
Darwin Correspondence Project
From:
Charles Robert Darwin
To:
Edward Frankland
Date:
3 May 1876
Source of text:
The John Rylands Library, The University of Manchester
Summary:
His samples of earth have been sent for analysis. EF has saved CD and his son from wasted experimenting.
Contributor:
Darwin Correspondence Project
From:
Charles Robert Darwin
To:
Edward Frankland
Date:
[before 6 June 1876]
Source of text:
The John Rylands Library, The University of Manchester
Summary:
Requests chemical analysis of sample of both natural and burnt soil.
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
From:
Charles Robert Darwin
To:
Edward Frankland
Date:
6 June [1876]
Source of text:
The John Rylands Library, The University of Manchester
Summary:
Gratitude for the invaluable assistance. Is disappointed that natural soil is richer than burnt. Problem of securing sufficient chemically pure soil to test growth of plants.
Contributor:
Darwin Correspondence Project
From:
Charles Robert Darwin
To:
Edward Frankland
Date:
22 Nov [1878]
Source of text:
The John Rylands Library, The University of Manchester (Frankland Collection 2179)
Summary:
Asks whether he may call to discuss a chemico-physiological point.
Contributor:
Darwin Correspondence Project
From:
Charles Robert Darwin
To:
Edward Frankland
Date:
2 Dec [1878]
Source of text:
The John Rylands Library, The University of Manchester (Frankland Collection 2230)
Summary:
Thanks for the Blue Book [Report to the Local Government Board on the water supplied to London].
Gives instructions for sending the pure water.
Has sent for the Wenham ice.
Enjoyed his talk with EF.
Contributor:
Darwin Correspondence Project
From:
Charles Robert Darwin
To:
Edward Frankland
Date:
4 Jan [1879]
Source of text:
The John Rylands Library, The University of Manchester (Frankland Collection)
Summary:
Fears that the promised bottle of pure water may have been despatched or stolen in passage. [See 11768a.]
Contributor:
Darwin Correspondence Project
From:
Charles Robert Darwin
To:
Edward Frankland
Date:
8 Feb 1879
Source of text:
The John Rylands Library, The University of Manchester (Frankland Collection)
Summary:
Gives results of the experiments: the leaves in most cases make the water alkaline. It cannot be ammonia. He and his son, Francis, suspect potash, which is valued as a manure. Will be grateful for the analysis EF has offered.
Contributor:
Darwin Correspondence Project
From:
Charles Robert Darwin
To:
Edward Frankland
Date:
12 July 1873
Source of text:
The John Rylands Library, The University of Manchester
Summary:
Seeks the assistance of a professional chemist in securing a qualitative analysis of the fluid secreted by the glands of Drosera which have the power of dissolving animal matter out of the bodies of insects. [See 8979.]
Contributor:
Darwin Correspondence Project
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:
Charles Robert Darwin
To:
Edward Frankland
Date:
16 July [1873]
Source of text:
The John Rylands Library, The University of Manchester
Summary:
Thanks EF for his offer of assistance. Could the viscid secretions [in glands of Drosera] contain pepsin? Will the sodium carbonate render the testing of organic matter difficult? [See 8979.] Will send the fluid in a fortnight.
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:
Charles Robert Darwin
To:
Edward Frankland
Date:
18 July [1873]
Source of text:
The John Rylands Library, The University of Manchester
Summary:
Agrees to delay sending the fluid [from the glands of Drosera] until early October. Will try suggestion about pepsin. [See 8981.]
Contributor:
Darwin Correspondence Project
From:
Charles Robert Darwin
To:
Edward Frankland
Date:
21 Sept [1873]
Source of text:
The John Rylands Library, The University of Manchester
Summary:
Although CD’s experiments with pepsin were unsuccessful, he observed that the glands [of Drosera] as far as acid is concerned act just as the stomach of a mammal. Further experiments detailed. The secretion must contain something analogous to pepsin. [See 9062.]
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:
Charles Robert Darwin
To:
Edward Frankland
Date:
23 Sept 1873
Source of text:
The John Rylands Library, The University of Manchester
Summary:
Will follow EF’s suggestions as to securing purity of fibrin.
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:
Charles Robert Darwin
To:
Edward Frankland
Date:
29 Sept 1873
Source of text:
The John Rylands Library, The University of Manchester
Summary:
Is sending washings of 445 leaves in EF’s distilled water with 20 grains of carbonate of soda. Details of the difficulties and complications involved.
Contributor:
Darwin Correspondence Project