RECORD: Darwin, C. R. n.d. Primula veris [measurements and calculations]. CUL-DAR78.12. (John van Wyhe ed., 2002-. The Complete Work of Charles 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-DAR78 contains notes on experiments for Darwin's book Cross and self fertilisation.
12
p. 4B
Primula sins
Breadth of young leaves
6.55 [÷] 5 [=] 1.31 [-] 1.03 [=] Different .28 5.15 [÷] 5 [=] 1.03
Says leaves on averg .28 of an inch broader or about 1/4 of an inch (exactly .28)
4. 6/8
3 6/
5
5 1/
3 3/
4 4/
26 .4/8
2 3/8
3
3 2/
2 1/
3
4
17 5/8
24.50 [÷] 6 [=] 4.08 17.625 [÷*] 6 [=] 2.93
Citation: John van Wyhe, ed. 2002-. The Complete Work of Charles Darwin Online. (http://darwin-online.org.uk/)
File last updated 26 December, 2025