From A. C. Ramsay 27 December 1871
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].
| Author: | Andrew Crombie Ramsay |
| Addressee: | Charles Robert Darwin |
| Date: | 27 Dec 1871 |
| Classmark: | DAR 176: 17 |
| Letter no: | DCP-LETT-8122 |
From A. C. Ramsay 3 January 1872
Summary
Further details and measurements of the stones in the courtyard pavement for CD’s investigation of earthworm action.
| Author: | Andrew Crombie Ramsay |
| Addressee: | Charles Robert Darwin |
| Date: | 3 Jan 1872 |
| Classmark: | DAR 176: 18 |
| Letter no: | DCP-LETT-8141 |
