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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

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

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

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

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

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

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

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

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

From J. S. Burdon Sanderson   16 October [1874]

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Summary

Responds to CD’s questions about relation to gelatin of areolar tissue, fibrous basis of bone, and other substances CD is using in his work on digestion of Drosera.

Author:  John Scott Burdon Sanderson, baronet
Addressee:  Charles Robert Darwin
Date:  16 Oct [1874]
Classmark:  DAR 58.1: 104–5
Letter no:  DCP-LETT-9681
Document type
letter (11)
Author
Burdon Sanderson, J. S.[X]
Addressee
Darwin, C. R.[X]
Correspondent
Date
1874
01 (1)
03 (2)
04 (1)
05 (2)
06 (2)
09 (1)
10 (2)
letter