- Forum Auctions (auction)
- Natural History Museum, London: NHM WP1/8/276
- British Library, The: BL Add. 46437 f. 109
ARW thanks C. R. for abstracts on "hanging valleys". ARW mentions his theory of seed migration through the air and is looking for evidence. Enquires if C. R. has geological survey work in Cornwall, or has he retired. ARW is building a house at Broadstone "on a very pretty bit of land".