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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 Edward Frankland   14 May [1874]

Summary

Requests sewage water (and oleic acid) for experiments to determine sensitivity of leaves [of Drosera].

Author:  Charles Robert Darwin
Addressee:  Edward Frankland
Date:  14 May [1874]
Classmark:  The John Rylands Library, The University of Manchester
Letter no:  DCP-LETT-9460A