Darwin Correspondence Project

The British naturalist Charles Darwin corresponded with numerous other luminaries of his age and members of his family. These have provided many insights about the nineteenth century, from scientific exploration and travel to religious debate and discussion. The letters also illuminate many aspects of Darwin's work: the development of his scientific ideas; his opinions on issues he did not publish about (his letters to Asa Gray, for example, show his changing opinions on the American Civil War); matters about his character and health; the ways in which he relied upon correspondence for much of his investigations into natural history; and the ways in which he marshalled scientific support for his ideas amongst friends and colleagues. The historian of science Janet Browne has argued in her biography of Darwin that his ability to correspond daily played a crucial role in the development of his theory and his ability to garner support for it from colleagues.

Analysis and publication of Darwin's correspondence has been a main focus of the so-called Darwin Industry of historical scholarship.

Correspondence was central to Darwin's research. In his early years, most of the letters he filed away immediately were those relevant to one of his ongoing scientific projects. Other letters were stuck onto "spits", as he called them, and when his slender stock of these was exhausted, he would burn the letters of several years, in order that he might make use of the liberated "spits." This process, carried on for years, destroyed many of the letters received before 1862. Even so, the number of letters is remarkable, even in these early years. After publication of the Origin of Species, Darwin's children convinced him to save a far greater proportion of his correspondence, so that the sequence from the early 1860s onwards is remarkably full.

In 1887, five years after Darwin's death, Darwin's son Francis Darwin published The Life and Letters of Charles Darwin in three volumes, to accompany the publication of The Autobiography of Charles Darwin. This was later followed by two volumes of More Letters of Charles Darwin published in 1902.

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