The Origin

On this day in 1831 the HMS Beagle, with Charles Darwin a passenger on board, departed the UK for a survey of South America, a voyage Darwin later said, “determined my whole career”.

Page in Darwin’s Notebook B that is stored in the Cambridge University Library

Charles Darwin’s initial Tree of Life sketch, which appears in his Notebook B, in 1837, shows his early theoretical insight of how a genus of related species might originate by divergence from a starting point (1).

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