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Gilbert, J. H. in correspondent 
1880-1889::1881 in date 
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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-13063

From:
Joseph Henry Gilbert
To:
Charles Robert Darwin
Date:
22 Feb 1881
Source of text:
DAR 165: 43
Summary:

The laboratory has scarcely any experimental evidence on acidity of humus soil and earthworm excreta. Refers CD to some sources of information.

Contributor:
Darwin Correspondence Project
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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

DCP-LETT-13076F

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

Sends some books.

Contributor:
Darwin Correspondence Project

DCP-LETT-13087

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

Returns the two books JHG had lent him. "I can plainly see I had better say nothing about the acidity of common mould."

Contributor:
Darwin Correspondence Project

DCP-LETT-13196

From:
Joseph Henry Gilbert
To:
Charles Robert Darwin
Date:
5 June 1881
Source of text:
DAR 165: 44
Summary:

Invites CD to visit Rothamsted. The experimental plots are at their best "as illustrating the vast influence of external conditions on the character and results of the struggle between the numerous components of an established mixed herbage".

Contributor:
Darwin Correspondence Project
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DCP-LETT-13198

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

Regrets that he has not strength enough to visit [Rothamsted].

Contributor:
Darwin Correspondence Project
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