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Text Online
From:
Darwin, Emma
To:
Litchfield, H. E.
Date:
[25 April 1874]
Source of text:
DAR 219.9: 111
Summary:

No summary available.

Contributor:
Darwin Family Letters
From:
John Scott Burdon Sanderson, 1st baronet
To:
Charles Robert Darwin
Date:
25 Apr 1874
Source of text:
DAR 58.2: 65–70
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.

Contributor:
Darwin Correspondence Project