RECORD: Darwin, C. R. & Francis Darwin. What would 240 cubic inches weigh? CUL-DAR65.130-131. Edited by John van Wyhe (Darwin Online, http://darwin-online.org.uk/)

REVISION HISTORY: Transcribed and edited by John van Wyhe 6.2025. 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, notes, observations, proofs etc. 1880-1881.

130

What would 240 cubic inches weigh?

= 185.1 oz

= 11.56 lb avoirdupois

= 11lb 9 oz

2.4 x 10 = 24 x 10 = 240

2.4 = 1.851

24 = 18.51

240 = 185.1

lb 56 [รท] 2 [=] 23.12

131

[calculations not transcribed]

131v

3.5 cubic inches of damp earth castings were weighed = 76.6 grams

Therefore:

2.4 cubic inches would weigh 810 grains = 1.851 oz

[calculations not transcribed]

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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 18 June, 2025