The Complete Work of Charles Darwin Online

RECORD: Darwin, C. R. 1856.04. Where many species in common. CUL-DAR205.2.138. Edited by John van Wyhe (Darwin Online, http://darwin-online.org.uk/)

REVISION HISTORY: Transcribed by Christine Chua and edited by John van Wyhe 5.2022. 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-DAR205.2 contains notes on means of distribution.

The brown crayon number '18' indicates that this document was filed by Darwin in his portfolio for the subject of Migration.

[138]

Ap /56/

Where many species in common a few allied species or representative, (as shown by increase in no of species to genera with increasing area) In regions where few species in common, (whether owing to some ancient immigration, or to most rare chance introductions) then I believe invariable rule, many or some representative species. Illustrate with N. Zealand & Australia & N.Z & S. America..— Creationist may say when some species in common, conditions common— hard to say more in common between the above 3 points than between any points in same Latitude, & if they are in common how come it that general character of productions so wonderfully diverse.

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