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Darwin Correspondence Project

instinct

MS-DAR-00162-000-00201.jpg

Jan Constantijn Costerus and Nicolaas Dirk Doedes
Jan Constantijn Costerus and Nicolaas Dirk Doedes
CUL DAR 162: 201
Cambridge University Library

Darwin's in letters, 1873: Animal or vegetable?

Having laboured for nearly five years on human evolution, sexual selection, and the expression of emotions, Darwin was able to devote 1873 almost exclusively to his beloved plants. He resumed work on the digestive powers of sundews and Venus fly traps, and the comparative fertility and vigour of self- and cross-pollinated species, work that would culminate in two books, Insectivorous plants (1875) and Cross and self fertilisation (1876). Darwin’s son Francis became increasingly involved in this botanical research, eventually renouncing plans for a medical career to become his father’s scientific secretary.

 

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Alfred Russel Wallace
http://www.npg.org.uk/collections/search/portrait/mw178180/FF-Geach-Alfred-Russel-Wallace?
F.F. Geach; Alfred Russel Wallace by Unknown photographer bromide copy print, (1862) NPG x5110
mw178180
© National Portrait Gallery, London

Darwin in letters, 1858-1859: Origin

The years 1858 and 1859 were, without doubt, the most momentous of Darwin’s life. From a quiet rural existence filled with steady work on his ‘big book’ on species, he was jolted into action by the arrival of an unexpected letter from Alfred Russel Wallace. This letter led to the first announcement of Darwin’s and Wallace’s respective theories of organic change at the Linnean Society of London in July 1858 and prompted the composition and publication, in November 1859, of Darwin’s major treatise On the origin of species by means of natural selection.

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