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| | John Napier |
 | | Napier, as we have said, applied himself assiduously to this object; and he was, probably, not the only person of that age whose attention it occupied. |
 | | Napier followed it up, in 1617, by publishing a small treatise, giving an account of a method of performing the operations of multiplication and division, by means of a number of small rods. |
 | | Napier was twice married; first, in 1571, to Elizabeth, daughter of Sir James Stirling of Keir, by whom he had a son and a daughter; secondly, to Agnes, daughter of James Chisholm of Cromlix, by whom he had ten children. |
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