RECORD: Darwin, C. R. n.d. [calculations relating to solution strengths]. CUL-DAR56.107. (John van Wyhe ed., 2002-. The Complete Work of Charles Darwin Online, http://darwin-online.org.uk/)
REVISION HISTORY: Text prepared and edited by John van Wyhe. 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 volumes CUL-DAR 54-61 contain material for Darwin's book Insectivorous plants (1875).
107
5769 minm in 12 oz
5760 [÷] 7 [=] 1/822 of grain in the 7 minims used — but it affected 146 heads ∴ each head took for Heads absorb
1/146 of 1/822 of one grain
822 [x] 146 [=] 120,012
∴ 1/120,012 of grain could alone have been absorbed
107v
(16 oz 437.5 grains [x] 16 [=] 2622 [+] 4370 [=] 6992 [+] 8 (for the .5) [=] 7000 of water
one grain of Carb of Ammonia to}
Weight
480 minim [x] 16 [=] 2880 [+] 4800 [=] 9680 minims in 16 oz
Citation: John van Wyhe, ed. 2002-. The Complete Work of Charles Darwin Online. (http://darwin-online.org.uk/)
File last updated 29 November, 2025