Darwin, Charles.

8vo, new impression, from the libraries of the author's sons william erasmus darwin and george howard darwin (see below), review copy with publisher's compliments slip loosely inserted, photographic frontispiece, folding table, original green linen cloth, decorated in blue on the upper cover, spine lettered in gilt, initial gathering loose, hinges slightly fragile, slight offsetting to endpapers

The author's first born son William Erasmus Darwin (1839-1914), bookplate; his brother George Howard Darwin (1845-1912), with his pencil annotations and markings in the text and on the rear endpapers (and some further notes on a loose sheet, inserted); thence by family descent

William Erasmus Darwin is now best known as the subject of his father's pioneering study of infant psychology "A biographical sketch of an infant" (Mind, no. 7, July 1877), later incorporated into The Expression of the Emotions in Man and Animals (1872), and which strongly influencing Darwin's view of human psychology espoused in the Origin. His brother George Howard Darwin, F.R.S., the fifth child (the third of seven to survive childhood) of Charles and Emma Darwin, was a mathematician and pioneering geophysicist who became the world's leading authority on oceanic tidal theory.

Freeman 467

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William Erasmus Darwin is now best known as the subject of his father's pioneering study of infant psychology "A biographical sketch of an infant" (Mind, no. 7, July 1877), later incorporated into The Expression of the Emotions in Man and Animals (1872). For the first three years of his son's life Darwin kept a daily record of his son's actions, gestures, and expressions, in order to identify the stages by which the human infant develops its human capacities alongside innate animal abilities. "The study confirmed Darwin's belief in the close continuity between animal and human nature, and was almost certainly in his mind when he made his single comment in the Origin of Species (1859) about the implications of his theory for humans: 'Psychology will be based on a new foundation, that of the necessary acquirement of each mental power and capacity by gradation. Light will be thrown on the origin of man and his history.'" (Randal Keynes, Oxford DNB). William Erasmus Darwin married Sara Price Ashburner, daughter of Theodore Sedgwick of New York, at Trinity Church, Paddington, London in 1877. They had no children.

His brother George Howard Darwin, F.R.S., the fifth child (the third of seven to survive childhood) of Charles and Emma Darwin, was a mathematician and pioneering geophysicist who became the world's leading authority on oceanic tidal theory. He became Plumian professor of astronomy and experimental philosopy at Cambridge in 1883, and lived with his wife Maud du Puy in Newnham Grange (later Darwin College) Cambridge.