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