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.


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Citation: John van Wyhe, ed. 2002-. The Complete Work of Charles Darwin Online. (http://darwin-online.org.uk/)

File last updated 28 July, 2025