RECORD: Darwin, C. R. 1852.09. Generally to make out a good range of variation museum specimens must be selected from all part of ranges. CUL-DAR205.9.247. Edited by John van Wyhe (Darwin Online, http://darwin-online.org.uk/)
REVISION HISTORY: Transcribed by Christine Chua and edited by John van Wyhe 9.2021. RN1
NOTE: The brown crayon number '22' indicates that this document was filed by Darwin in his portfolio for the subject of Palaeontology: extinction.
Reproduced with permission of the Syndics of Cambridge University Library and William Huxley Darwin. The volume CUL-DAR205.9 contains notes on palaeontology and geology [regarding theory of evolution].
[247]
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Generally to make out a good range of variation museum specimens must be selected from all part of ranges (& generally widest ranges most variable). To make out variation in time an equally perfect series ought to be secured. Variation so slow that if manifold more specimens from more Geological stages, from several districts, then few species now distinct wd be found to [roam] the [settle] or with predecessors or successors - Respect process - Just what takes place with species in space
Sept 1852
[247v]
[sketches]
Citation: John van Wyhe, ed. 2002-. The Complete Work of Charles Darwin Online. (http://darwin-online.org.uk/)
File last updated 25 September, 2022