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From J. S. B. Sanderson   [1874]

Summary

Note on the chemical composition of teeth.

Author:  John Scott Burdon Sanderson, baronet
Addressee:  Charles Robert Darwin
Date:  [1874]
Classmark:  DAR 58.2: 58
Letter no:  DCP-LETT-9214

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, 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

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, 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, 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

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, 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

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, baronet
Addressee:  Charles Robert Darwin
Date:  25 Apr 1874
Classmark:  DAR 58.2: 65–70
Letter no:  DCP-LETT-9427F

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, 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

From J. S. Burdon Sanderson   12 May [1874]

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Summary

Reports results of experiments comparing digestibility of gluten and fibrin for CD’s work on Drosera.

Author:  John Scott Burdon Sanderson, baronet
Addressee:  Charles Robert Darwin
Date:  12 May [1874]
Classmark:  DAR 58.1: 51–2
Letter no:  DCP-LETT-9456

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, 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

From J. S. Burdon Sanderson   26 May [1874]

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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, baronet
Addressee:  Charles Robert Darwin
Date:  26 May [1874]
Classmark:  DAR 58.1: 54–5
Letter no:  DCP-LETT-9470

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, 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, 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

From J. S. Burdon Sanderson   19 June 1874

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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, baronet
Addressee:  Charles Robert Darwin
Date:  19 June 1874
Classmark:  DAR 58.1: 60–1
Letter no:  DCP-LETT-9502

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, 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

From J. S. Burdon Sanderson   26 June [1874]

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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, baronet
Addressee:  Charles Robert Darwin
Date:  26 June [1874]
Classmark:  DAR 58.1: 144–5, 153–4
Letter no:  DCP-LETT-9517

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, 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

From J. S. Burdon Sanderson   3 September [1874]

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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, baronet
Addressee:  Charles Robert Darwin
Date:  3 Sept [1874]
Classmark:  DAR 58.1: 146
Letter no:  DCP-LETT-9623

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, 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

From J. S. Burdon Sanderson   12 October 1874

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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, baronet
Addressee:  Charles Robert Darwin
Date:  12 Oct 1874
Classmark:  DAR 58.1: 101–3
Letter no:  DCP-LETT-9676

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, 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
Document type
letter[X]
Correspondent
Date
1874
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