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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

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
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