| E. Cobham Brewer 1810–1897. Dictionary of Phrase and Fable. 1898. |
| | | Calculators (The). | | |
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Alfragan, the Arabian astronomer. Died 820. | 1 |
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Jedediah Buxton, of Elmeton, in Derbyshire. (1705–1775.) | 2 |
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George Bidder and Zerah Colburn (an American), who exhibited publicly. | 3 |
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Inaudi exhibited “his astounding powers of calculatin’” at Paris in 1880, his additions and subtractions were from left to right. | 4 |
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“Buxton, being asked ‘How many cubical eighths-of-an-inch there are in a body whose three sides are 23,145,786 yards, 5,642,732 yards, and 54,965 yards?’ replied correctly without setting down a figure.” |
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“Colburn, being asked the square root of 106,929 and the cube root 268,336,125, replied before the audience had set the figures down.”—Price: Parallet History, vol. ii. p. 570. |
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