RECORD: Darwin, C. R. n.d. If we look at some of the great breaks in formations as between Cretaceous & Eocene beds. CUL-DAR205.9.266. (John van Wyhe ed., 2002-. The Complete Work of Charles Darwin Online, http://darwin-online.org.uk/)
REVISION HISTORY: Transcribed by Christine Chua and John van Wyhe, edited by John van Wyhe 10.2021. RN2
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-DAR205.9 contains notes on palaeontology and geology [regarding theory of evolution].
[266]
If we look at some of the great breaks in formations as between Cretaceous & Eocene beds & neglect all organic remains we naturally conclude an immense period must have elapsed to have changed while geographical state of area — The suddenness of the change is a mere begging the question from suddenness of change in organic being — (whether will apply to the [six] changes of Ammonites in the Chalk →
[266v]
of France as pretended by D'Orbigny—
= The foregoing argument applies only to those who follow out existing analogies = We may argue generally long interval between formations became apt to be unconformable We see how long the bed of the Sea (?) Many remain without being added to
Citation: John van Wyhe, ed. 2002-. The Complete Work of Charles Darwin Online. (http://darwin-online.org.uk/)
File last updated 15 January, 2026