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Mathematical Treasure: Thomas Lydal's Arithmetic

Frank J. Swetz (Pennsylvania State University)

Vulgar and Decimal Arithmetic (1710) was written by Thomas Lydal, who was employed by the Royal Excise Office.

Source: Oughtred Society, Archive of Collections, Tom Wyman Collection. Tom Wyman (1927-2014) was the first president of the Oughtred Society. Wyman assembled an extensive collection of early slide rules and books related to them. The image above is #114 in the Wyman Collection.

Index to Mathematical Treasures

Frank J. Swetz (Pennsylvania State University), "Mathematical Treasure: Thomas Lydal's Arithmetic," Convergence (June 2018)