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Ramsay, A. C. in author 
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From:
Andrew Crombie Ramsay
To:
Charles Robert Darwin
Date:
18 Oct 1871
Source of text:
DAR 176: 15
Summary:

Sends two papers ["On the physical relations of the new red marl", Q. J. Geol. Soc. Lond. 27 (1871): 189–98 and "On the red rocks of England", Q. J. Geol. Soc. Lond. 27 (1871): 241–54] bearing on the continuance of generic and specific terrestrial types, in areas of Europe and elsewhere, that lasted from the Upper Silurian to the Lias.

Contributor:
Darwin Correspondence Project
From:
Andrew Crombie Ramsay
To:
Charles Robert Darwin
Date:
20 Oct 1871
Source of text:
DAR 176: 16
Summary:

Glad CD agrees with his views as much as he does. Not surprised that his red rocks [Red Sandstones] ideas are disputed. The red marls of Auvergne support his inland water theory.

Contributor:
Darwin Correspondence Project
From:
Andrew Crombie Ramsay
To:
Charles Robert Darwin
Date:
27 Dec 1871
Source of text:
DAR 176: 17
Summary:

Sends description and measurements of the 18th century courtyard pavement of his house, the stones of which have sunk as a result of earthworm action [see Earthworms, pp. 192–3].

Contributor:
Darwin Correspondence Project
From:
Andrew Crombie Ramsay
To:
Charles Robert Darwin
Date:
3 Jan 1872
Source of text:
DAR 176: 18
Summary:

Further details and measurements of the stones in the courtyard pavement for CD’s investigation of earthworm action.

Contributor:
Darwin Correspondence Project