RECORD: Darwin, C. R. n.d. Give resume of manner of descent explained in Ch 6. CUL-DAR205.5.169. Edited by John van Wyhe (Darwin Online, http://darwin-online.org.uk/)
REVISION HISTORY: Transcribed by Christine Chua and edited by John van Wyhe 1.2023. 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 volume CUL-DAR205.5 contains notes on the principle of divergence, transitional organs and instincts.
The brown crayon number '11' indicates that this document was filed by Darwin in his portfolio for the subject of Divergence.
[169]
11
give resume of manner of descent, explained in Ch 6. (p. 26 a-. to m.-m) & repeat Diagrams III & IV & then go on if the process be repeated, with diverge a20 will give rise to group. h20 to another groups of species; intermediate forms always supplanted, (for we have seen why infinite number of species cannot be supported) & then a the groups of species descended from a20 & will
[169v]
form so many new genera, very distinct from the groups of genera descended from L20, & still more distinct & these will form sub-family or Family — & still more distinct from groups of genera descended from m20 & z20, which will form a distinct Family & so on.—
Result will be that few species of present day will have descendants &c
Citation: John van Wyhe, ed. 2002-. The Complete Work of Charles Darwin Online. (http://darwin-online.org.uk/)
File last updated 6 March, 2023