RECORD: Darwin, C. R. 03-05.1880. A few days ago 2 larger pots were filled with earth with some gravel [Earthworm research notes] CUL-DAR65.52-53. 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.
52
Drawing in of Leaves & Triangles into Burrows
52v
[Table of observations 4-27 March 1881]
Triangles slowest drawn in by worms in Pots Divided into 3 equal parts
Narrow Triangles Broad triangles
53
[Dates and observations 17-19 March 1881]
8 aided [to] not aided
Two in same hole
Feb 19 2 n. in same hole both by apex
March 6 2B [do] one by base & one by apex
[March] 7 2B [do] one by apex & ny middle
[March] 8 1N & 1B same hole. N by apex B by base
[March] 10 2B one by apex ^ one by base
- 2B one by apex & one by base
in 6 instances — & in 5 of those 2 drawn in different ways — ie Drawn 5 by apex & the other by base or in one case by middle)
Spirally wood
March 4 1B
[March] 7 1N
[March] 12 1B
[March] 17 1N
[March] 20 1N
5 cases having some had removed.
53v
I have called them double sized by about middle which; but not always measured, as that the basal & apical ends were strictly out of hole.
[Dates and observations 21 February-16 March 1881]
This has been done
Just put 2 from those drawn in by apex & added to doubled ones.
Citation: John van Wyhe, ed. 2002-. The Complete Work of Charles Darwin Online. (http://darwin-online.org.uk/)
File last updated 28 July, 2025