Aritmetica pratica.

8vo: 266 pp. (some browning and spotting).

Contemp. limp vellum (somewhat soiled), flat spine.

Later edition of the Italian translation (first published in Latin in 1583, with the Italian translation following in 1586) of this treatise on mathematics by Christopher Clavius (1538-1612), German Jesuit astronomer and mathematician.
"Clavius was an excellent teacher of mathematics, and his textbooks were models of good arrangement. This work is an attempt at a practical arithmetic. It is conservative in treatment, the applications being confined, as was the custom, largely to the rule of three. It was too scholarly to be popular in schools under the mercantile influence, but it was influential in the classical schools" (Smith).
Ref. Smith, Rara Arithmetica, p. 378. - Worldcat (one copy at Yale University).
Prov. FM (bookpl.) - Old name on flyleaf. - Some scribbles.