RECORD: Darwin, C. R. 1871. [Earthworm research notes]. CUL-DAR64.1.7. 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. RN2
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 volume CUL-DAR64.1 contains material for Earthworms, experiments on worms; different locales & photographs and cuttings from journals.
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Jan 29/72/ The great majority of castings on Lawn are dark but occasionally angular a yellow casting cast up & just wetter few last days many yellow have been cast up, so I had hole dug & found the yellow clay only 5 inches from surface
Have worms work chiefly under the surface, & then again with the hole in field, which had been filled up with red clay yet turf have been covered with dark castings — (It is [illeg] the worm carry from depth many deposit some castings in old disused holes.
Citation: John van Wyhe, ed. 2002-. The Complete Work of Charles Darwin Online. (http://darwin-online.org.uk/)
File last updated 23 July, 2025