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To Edward Frankland   21 September [1873]

Summary

Although CD’s experiments with pepsin were unsuccessful, he observed that the glands [of Drosera] as far as acid is concerned act just as the stomach of a mammal. Further experiments detailed. The secretion must contain something analogous to pepsin. [See 9062.]

Author:  Charles Robert Darwin
Addressee:  Edward Frankland
Date:  21 Sept [1873]
Classmark:  The John Rylands Library, The University of Manchester
Letter no:  DCP-LETT-9061A

To W. W. Baxter   21 September [1873]

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Summary

Requests 6 2oz bottles with corks. Folic acid produces remarkable effect. Orders hydriodic acid.

Author:  Charles Robert Darwin
Addressee:  William Walmisley Baxter
Date:  21 Sept [1873]
Classmark:  DAR 185: 136
Letter no:  DCP-LETT-9061F
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