Darwin’s Mentor by S. M. Walters and E. A. Stow, Cambridge University Press,
£40, ISBN 0521591465
DARWIN is such a towering figure in Victorian science that it is easy to
overlook contemporary notables. The mentor of Darwin’s Mentor was John Stevens
Henslow, remembered mainly as the founder of the Botanic Garden in Cambridge.
Though consumed with ambition to travel abroad as a young man, he was powerfully
dissuaded from such a course by his family and remained to lead an academic life
as professor of botany in the university.
Henslow was hardly a dashing figure—he is perhaps best described as a
quietly remarkable man. However, his recommendation in 1831 that Darwin, his
pupil, should accompany the voyage of the Beagle proved unimaginably
momentous.
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A quotation at the beginning of this biography—from a letter of
Darwin’s to botanist Joseph Hooker—might put off the reader. Darwin was
dubious about a previous plan for a biography of Henslow. “The equability and
perfection of Henslow’s whole character, I should think would make it very
difficult for anyone to pourtray him.” Don’t shun the book on that account. It
is a satisfying read for anyone interested in the burgeoning and sometimes
passionate history of science in the 19th century, larded with glimpses of
Victorian social life and colourful characters.