Emma Darwin with Leonard Darwin as a child Cambridge University Library
The seven-year period following Darwin's return to England from the Beagle voyage was one of extraordinary activity and productivity in which he became recognised as a naturalist of outstanding ability, as an author and editor, and as a professional man with official responsibilities in several scientific organisations. They are also the years in which he married, started a family, and moved to Down House, Kent, his home for the rest of his life. By 1842 he was ready to write an outline of his species theory, the so-called 'pencil sketch', based on a principle that he called ‘natural selection’.
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William Bernhard Tegetmeier Cambridge University Library
In May 1856, Darwin began writing up his 'species sketch’ in earnest. During this period, his working life was completely dominated by the preparation of his 'Big Book', which was to be called Natural selection. Using letters are the main source for much of his research he amassed data, carried out breeding experiments, and struggled with statistical analysis. Several of his experiments: seeds would not germinate; beans failed to cross; newly-hatched molluscs refused to do what he hoped. Most significant in terms of Darwin’s future, however, was the beginning of his correspondence with Alfred Russel Wallace.
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Honeycombs are natural engineering marvels, using the least possible amount of wax to provide the greatest amount of storage space, with the greatest possible structural stability. Darwin recognised that explaining the evolution of the honey-bee’s comb-building abilities was essential if his theory of natural selection was to be taken seriously, and in the 1850s he carried out his own experiments at his home at Down House in Kent, and exchanged many letters on the subject. One correspondent even drew an ingenious analogy with a plum pie - you can try this at home!
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