RECORD: Darwin, C. R. 07-08.[1880]. Glass-Beads [Earthworm research notes] CUL-DAR65.8. 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 volume CUL-DAR65 contains materials for Earthworms.
8
Aug. 5 [1880]
Glass-Beads
found in a casting one of black glass-beads abt 1 1/2 m.m, in length & breadth — inside of tube packed with sand — could see no clear difference in the polish of its surface — What object cd worm have for swallowing it? It was on pot with nothing but fine sand.
July 24th I began putting 5 glass beads on July 24th & on pot with sand repeated this several times & on the next day most or all removed — on 28th 5 Beads & 5 fragments of blue glass — 29th all gone — put same again, on 30th all gone — put same again on Aug 1 all gone.
Citation: John van Wyhe, ed. 2002-. The Complete Work of Charles Darwin Online. (http://darwin-online.org.uk/)
File last updated 28 July, 2025