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Darwin Correspondence Project
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To Charles Lyell   23 [September 1860]


Hopes to get Asa Gray’s review of Origin republished.

Argues for single origin of mammals.

Encloses two phylogenetic diagrams indicating possible descent of mammals.

Comments on rodents, marsupials, and dingo in Australia,

and on a paper on the survival of stumps as a result of root grafting.

Argues that man had a single progenitor and consists of a single species.

Comments on destruction of non-white races.

Discusses introduction of rodents to islands by man.

Author:  Charles Robert Darwin
Addressee:  Charles Lyell, 1st baronet
Date:  23 [Sept 1860]
Classmark:  American Philosophical Society (Mss.B.D25.227)
Letter no:  DCP-LETT-2925
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Darwin’s reading notebooks


In April 1838, Darwin began recording the titles of books he had read and the books he wished to read in Notebook C (Notebooks, pp. 319–28). In 1839, these lists were copied and continued in separate notebooks. The first of these reading notebooks (DAR 119…

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  • … 1814] & at the end of Congo voyage [R. Brown 1818]. (Hooker 923) 7  read Decandolle …