To J. S. Burdon Sanderson 21 March 1874
Summary
Sends his MS on Dionaea and hopes it may be useful for JSBS’s lecture ["On the mechanism of the leaf of Dionaea muscipula", Not. Proc. R. Inst. G. B. 7 (1874): 332–5].
Author: | Charles Robert Darwin |
Addressee: | John Scott Burdon Sanderson, 1st baronet |
Date: | 21 Mar 1874 |
Classmark: | University of British Columbia Library, Rare Books and Special Collections (Darwin - Burdon Sanderson letters RBSC-ARC-1731-1-16) |
Letter no: | DCP-LETT-9368 |
To J. S. Burdon Sanderson 31 March [1874]
Summary
Thanks for the careful experiments, particularly on organic acids.
Author: | Charles Robert Darwin |
Addressee: | John Scott Burdon Sanderson, 1st baronet |
Date: | 31 Mar [1874] |
Classmark: | University of British Columbia Library, Rare Books and Special Collections (Darwin - Burdon Sanderson letters RBSC-ARC-1731-1-5) |
Letter no: | DCP-LETT-9381 |
To J. S. Burdon Sanderson 5 May [1874]
Summary
Thanks for the acid digestion experiments, which can be printed as they are. CD trying Drosera on dentine and enamel.
Author: | Charles Robert Darwin |
Addressee: | John Scott Burdon Sanderson, 1st baronet |
Date: | 5 May [1874] |
Classmark: | University of British Columbia Library, Rare Books and Special Collections (Darwin - Burdon Sanderson letters RBSC-ARC-1731-1-4) |
Letter no: | DCP-LETT-9441 |
To J. S. Burdon Sanderson 14 May 1874
Summary
Discusses digestion by insectivorous plants, asks JSBS to try same experiments using pepsin as the digestive agent to see how the results compare with CD’s observations on digestive power of Drosera.
Author: | Charles Robert Darwin |
Addressee: | John Scott Burdon Sanderson, 1st baronet |
Date: | 14 May 1874 |
Classmark: | University of British Columbia Library, Rare Books and Special Collections (Darwin - Burdon Sanderson letters RBSC-ARC-1731-1-17) |
Letter no: | DCP-LETT-9459 |
To J. S. Burdon Sanderson 27 May [1874]
Summary
Thanks JSBS for his work. CD concludes the ferment of Drosera must differ from pepsin.
Author: | Charles Robert Darwin |
Addressee: | John Scott Burdon Sanderson, 1st baronet |
Date: | 27 May [1874] |
Classmark: | University of British Columbia Library, Rare Books and Special Collections (Darwin - Burdon Sanderson letters RBSC-ARC-1731-1-3) |
Letter no: | DCP-LETT-9473 |
To J. S. Burdon Sanderson 12 June 1874
Summary
JSBS’s article in Nature ["Venus’s fly-trap", 10 (1874): 105–7, 127–8] could not have been better done.
Has found another plant, Pinguicula, which can catch and digest flies.
Author: | Charles Robert Darwin |
Addressee: | John Scott Burdon Sanderson, 1st baronet |
Date: | 12 June 1874 |
Classmark: | University of British Columbia Library, Rare Books and Special Collections (Darwin - Burdon Sanderson letters RBSC-ARC-1731-1-18) |
Letter no: | DCP-LETT-9489 |
To J. S. Burdon Sanderson 21 June [1874]
Summary
Thanks for fibrin. Drosera and Pinguicula dissolve it thoroughly.
Author: | Charles Robert Darwin |
Addressee: | John Scott Burdon Sanderson, 1st baronet |
Date: | 21 June [1874] |
Classmark: | University of British Columbia Library, Rare Books and Special Collections (Darwin - Burdon Sanderson letters RBSC-ARC-1731-1-2) |
Letter no: | DCP-LETT-9504 |
To J. S. Burdon Sanderson 21 August [1874]
Summary
Reports difficulties in experiments on digestion of fibro-cartilage. Asks about JSBS’s experiments with artificial digestive fluids.
JSBS must read Hooker’s address at Belfast [Rep. BAAS 44 (1874): 103–16] to see what a magnificent digester Nepenthes is.
Author: | Charles Robert Darwin |
Addressee: | John Scott Burdon Sanderson, 1st baronet |
Date: | 21 Aug [1874] |
Classmark: | University of British Columbia Library, Rare Books and Special Collections (Darwin - Burdon Sanderson letters RBSC-ARC-1731-1-25); DAR 147: 415 (copy) |
Letter no: | DCP-LETT-9605 |
To J. S. Burdon Sanderson 9 October 1874
Summary
Has been testing the digestive powers of Drosera; wants to know whether a group of substances that elicit similar responses are related.
Author: | Charles Robert Darwin |
Addressee: | John Scott Burdon Sanderson, 1st baronet |
Date: | 9 Oct 1874 |
Classmark: | University of British Columbia Library, Rare Books and Special Collections (Darwin - Burdon Sanderson letters RBSC-ARC-1731-1-19) |
Letter no: | DCP-LETT-9669 |
To J. S. Burdon Sanderson 13 October 1874
Summary
Discusses the powers of digestion of Drosera and why certain substances produce less excitement in the plant than others.
Author: | Charles Robert Darwin |
Addressee: | John Scott Burdon Sanderson, 1st baronet |
Date: | 13 Oct 1874 |
Classmark: | University of British Columbia Library, Rare Books and Special Collections (Darwin - Burdon Sanderson letters RBSC-ARC-1731-1-20) |
Letter no: | DCP-LETT-9678 |
From J. S. B. Sanderson [1874]
Summary
Note on the chemical composition of teeth.
Author: | John Scott Burdon Sanderson, 1st baronet |
Addressee: | Charles Robert Darwin |
Date: | [1874] |
Classmark: | DAR 58.2: 58 |
Letter no: | DCP-LETT-9214 |
From J. S. Burdon Sanderson 23 March [1874]
Summary
Thanks for MS which he intends to read while on a week’s holiday.
Sends thanks for Francis Darwin’s offer of help and says that Francis’s experiments on digestion are complete.
Author: | John Scott Burdon Sanderson, 1st baronet |
Addressee: | Charles Robert Darwin |
Date: | 23 Mar [1874] |
Classmark: | University of British Columbia Library, Rare Books and Special Collections (Darwin - Burdon Sanderson letters RBSC-ARC-1731-1-36) |
Letter no: | DCP-LETT-9370A |
From J. S. Burdon Sanderson 30 March [1874]
Summary
Sends results of experiments on digestion. Encloses two sets of notes: "Experiments on the digestibility of certain preparations sent by Mr Darwin" and "Note for Mr Darwin" [marked by CD for insertion in ch. 6 of Insectivorous plants].
Author: | John Scott Burdon Sanderson, 1st baronet |
Addressee: | Charles Robert Darwin |
Date: | 30 Mar [1874] |
Classmark: | University of British Columbia Library, Rare Books and Special Collections (Darwin - Burdon Sanderson letters RBSC-ARC-1731-1-28); DAR 58.2: 59–64 |
Letter no: | DCP-LETT-9378A |
From J. S. Burdon Sanderson 25 April 1874
Summary
Purpose of experiments was to determine digestive activity of liquids containing pepsin. Gives required amounts of hydrochloric, propionic, butyric and valerianic acids. Describes experiment and gives results. Also experimented on digestive activity of butyric acid at greater temperatures than the termperature of the body.
Author: | John Scott Burdon Sanderson, 1st baronet |
Addressee: | Charles Robert Darwin |
Date: | 25 Apr 1874 |
Classmark: | DAR 58.2: 65–70 |
Letter no: | DCP-LETT-9427F |
From J. S. Burdon Sanderson 12 May [1874]
Summary
Reports results of experiments comparing digestibility of gluten and fibrin for CD’s work on Drosera.
Author: | John Scott Burdon Sanderson, 1st baronet |
Addressee: | Charles Robert Darwin |
Date: | 12 May [1874] |
Classmark: | DAR 58.1: 51–2 |
Letter no: | DCP-LETT-9456 |
From J. S. Burdon Sanderson 26 May [1874]
Summary
Sends CD provisional information that artificial gastric juice dissolves bone entirely and that gluten and fibrin are completely dissolved in hydrochloric, propionic, and butyric acids. [See Insectivorous plants, pp. 118–19.]
Author: | John Scott Burdon Sanderson, 1st baronet |
Addressee: | Charles Robert Darwin |
Date: | 26 May [1874] |
Classmark: | DAR 58.1: 54–5 |
Letter no: | DCP-LETT-9470 |
From J. S. Burdon Sanderson 19 June 1874
Summary
Sends cartilage from cat’s ear, the elastic fibres of which will probably resist digestion [by Drosera]. Is preparing fibro-cartilage, which he expects will be digested easily. [See Insectivorous plants, p. 104.]
Author: | John Scott Burdon Sanderson, 1st baronet |
Addressee: | Charles Robert Darwin |
Date: | 19 June 1874 |
Classmark: | DAR 58.1: 60–1 |
Letter no: | DCP-LETT-9502 |
From J. S. Burdon Sanderson 26 June [1874]
Summary
Is delighted to hear that Pinguicula and Drosera digest fibrin. Suggests diluting gluten in weak hydrochloric acid to remove starch. Enamel was nearly digested [by Drosera] overnight. Would like to try separating the digestive ferment of Pinguicula.
Author: | John Scott Burdon Sanderson, 1st baronet |
Addressee: | Charles Robert Darwin |
Date: | 26 June [1874] |
Classmark: | DAR 58.1: 144–5, 153–4 |
Letter no: | DCP-LETT-9517 |
From J. S. Burdon Sanderson 3 September [1874]
Summary
Will prepare experiments with the fatty acids on digestion of gluten. Has found it is digested slowly, but entirely, with pepsin and hydrochloric acid.
Author: | John Scott Burdon Sanderson, 1st baronet |
Addressee: | Charles Robert Darwin |
Date: | 3 Sept [1874] |
Classmark: | DAR 58.1: 146 |
Letter no: | DCP-LETT-9623 |
From J. S. Burdon Sanderson 12 October 1874
Summary
Suggests an explanation for difference in excitability of Drosera leaves to meat and albumen on the one hand and, on the other, fibrin, areolar tissue, gelatin, and fibrous basis of bone.
Author: | John Scott Burdon Sanderson, 1st baronet |
Addressee: | Charles Robert Darwin |
Date: | 12 Oct 1874 |
Classmark: | DAR 58.1: 101–3 |
Letter no: | DCP-LETT-9676 |
Burdon Sanderson, J. S. | (11) |
Darwin, C. R. | (10) |
Darwin, C. R. | (11) |
Burdon Sanderson, J. S. | (10) |