RECORD: Darwin, C. R. n.d [Worm notes]. Results to correct M.S. on Triangles of paper. CUL-DAR65.82. Edited by John van Wyhe (Darwin Online, http://darwin-online.org.uk/)

REVISION HISTORY: Transcribed by Christine Chua and edited by John van Wyhe 8.2021. 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.


82

Results to correct M.S on Triangles of Paper - All relative to narrow triangles – for correcting the Press

I must add 4 arched ie with correcting upwards & so not counted: 2 pairs in same hole, one by apex & one by base. Eleven drawn in by apex with basal angles not bent but 2 of them with base directed that was I doubled case whether angles had been bent.

54 [+] 11 [=] 65

65 [+] 24 [=] 89

71 [+] 11 [=] 82

Proportion of narrow triangles to broad triangles drawn into burrow is as 183 to 120 better give them real figures 66 or as 100 to 65.6

183 [+] 120 [=] 303

I may now say thar out of 78+11 = 89 drawn in by apex

71+11 = 82 had not basal angles bent (though the bases of 14 were directed, & only 7 had basal angles bent, as if worm had first tried to draw them in by force.

Of all (narrow & broad together triangle -

62.4 percent (or 62) drawn in by apex

22.8 (or 23) percent [do] by base

14.9 (or 15) percent [do] by middle

So that those drawn in by apex far exceed those drawn in by base & middle together

59 [+] 25 [+] 16 

Of the narrow triangle alone -

65 percent drawn in by apex

21 percent [do] by Base

14 percent [do] by middle

Nearly twice as many drawn in by apex, as by base & middle together

21 [x] 3 [=] 63

21 [x] 3 [=] 63


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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 25 September, 2022