The Complete Work of Charles Darwin Online

RECORD: Darwin, C. R. 1869.04.04. Abstract of Hoffmann, Untersuchungen zur Bestimmung des Werthes von Species und Varietät. CUL-DAR77.37. Edited by John van Wyhe (Darwin Online, http://darwin-online.org.uk/)

REVISION HISTORY: Transcribed by Christine Chua and edited by John van Wyhe 2.2023. 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 76-79 contain material for Darwin's book Cross and self fertilisation (1876).

Hoffmann, H. 1869. Untersuchungen zur Bestimmung des Werthes von Species und Varietät. Giffen.

[37]

Ap. 4— 1869

Hoffman Bestimmung der Species— (over)

Good to refer to about Phaseolus — as he decries crossing — therefore very good to show advantage of crossing — I think I have note that one species sets freely, when protected from. insects —

It is very important that these are not natives, — may behave differently, Carriere in his Essay on Production & Fixation of Vars shows that Heat determine Ante floral & Post floral fertilisation

Hoffman Bestimmung der Species

[37v]

Phaseolus will come in when I speak of covered up plants

Citation: John van Wyhe, ed. 2002-. The Complete Work of Charles Darwin Online. (http://darwin-online.org.uk/)