File:Darwin Tree 1837.png
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Charles Darwin's 1837 sketch, his first diagram of an evolutionary tree from his First Notebook on Transmutation of Species (1837). Interpretation of handwriting: "I think case must be that one generation should have as many living as now. To do this and to have as many species in same genus (as is) requires extinction . Thus between A + B the immense gap of relation. C + B the finest gradation. B+D rather greater distinction. Thus genera would be formed. Bearing relation" (next page begins) "to ancient types with several extinct forms" |
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| Source | Page 36 of Notebook B: [Transmutation of species (1837-1838)]. 'commenced. . . July 1837'; from Darwin Online | ||||||||||||||||||||
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| Date/Time | Thumbnail | Dimensions | User | Comment | |
|---|---|---|---|---|---|
| current | 12:36, 25 September 2019 | | 1,390 × 2,265 (4.22 MB) | Racconish | larger |
| 14:05, 6 November 2014 |  | 925 × 1,563 (1.8 MB) | Scewing | ((Information |Description=Charles Darwin's 1837 sketch, his first diagram of an evolutionary tree from his First Notebook on Transmutation of Species (1837) on view at the Museum of Natural History in Manhattan. Interpretation of handwriting: "I thin... |
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