RECORD: Darwin, C. R. 1880. [Earthworm research notes]. CUL-DAR63.50. Edited by John van Wyhe (The Complete Work of Charles Darwin Online, http://darwin-online.org.uk/)
REVISION HISTORY: Prepared and edited by John van Wyhe 7.2025. RN1
NOTE: See record in the Darwin Online manuscript catalogue, enter its Identifier here. Reproduced with permission of the Syndics of Cambridge University Library and William Huxley Darwin. The volumes CUL-DAR63, CUL-DAR64 and CUL-DAR65 contain a diverse array of materials for Darwin's research on earthworms. All of the textual items in these folders, including this one, have been transcribed in a single file: CUL-DAR63-65.
50
[Brading, Isle of Wight]
Dec 17 1880
Brading castings
Have washed & examined 4 castings from many particles of old mortar & apparently fine cement & of brick or tiles. The vast majority of them seem plainly worn when looked at with naked eye or strong lens.
The fragment of mortar may have been corroded by acid & carbonic & there is in some degree probable, as grain [projected] . But this will not apply to particle of tiles — One apparent concretion in castings. It is extremely impossible that so many fragments shd have been from only rounded in matter beneath tiles — only a few angular.
The triturated particles soft & easily crushed — bright red.
(Used)
Citation: John van Wyhe, ed. 2002-. The Complete Work of Charles Darwin Online. (http://darwin-online.org.uk/)
File last updated 7 July, 2025