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DCP-LETT-13038

From:
Charles Robert Darwin
To:
Joseph Henry Gilbert
Date:
5 Feb 1881
Source of text:
Rothamsted Research (GIL13)
Summary:

Asks whether vegetable mould has an acid reaction. The contents of intestines of earthworms and castings are acid, which leads him to inquire about mould.

Contributor:
Darwin Correspondence Project

DCP-LETT-13066

From:
Charles Robert Darwin
To:
Joseph Henry Gilbert
Date:
25 Feb 1881
Source of text:
Rothamsted Research (GIL13)
Summary:

Discusses acidity of earthworm castings. JHG’s reply will make him more cautious.

Would like to see W. A. Detmer’s paper [Landwirtsch. Versuchs-Stat. 14 (1871): 248–300] and S. W. Johnson’s work [How crops feed].

Comments on food value of white and brown bread.

Contributor:
Darwin Correspondence Project
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