RECORD: Darwin, C. R. [1881].03.26. Summary about the bending of basal angles of Triangles [Earthworm research notes] CUL-DAR65.83. 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.
83
March 26th Summary about the reading of basal angles of Triangles.
narrow triangles |
Not bent nor dirtied |
not bent but dirty |
Bent, & generally more or less dirty |
narrow triangle |
41 |
8 |
5 |
Broad Triangles |
18 |
4 |
2 |
59 [+] 12 [=] 71 |
12 |
7 |
41 [+] 8 [+] 5 [=] 54
(19) [+] 59 [=] 78
I may say out of 78 triangles drawn in by apex 71 had not base at all bent, (that in base of 12 were somewhat dirtied) & only 7 have had base at all bent as if worm had first tried to draw in by base. This is conclusion that worms did not try first by base.
83v
59 clean + 18 dirtied
78 [รท] 3 [=] 26
78 [-] 6 [0] [=] 18
Citation: John van Wyhe, ed. 2002-. The Complete Work of Charles Darwin Online. (http://darwin-online.org.uk/)
File last updated 28 July, 2025