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Mathematics.
Oughtred, William, 1575-1660. **E197.32
The key of the mathematicks new forged and filed: together with
a treatise of the resolution of all kinde of affected equations in
numbers. VVith the rule of compound usury; and demonstra-
tion of the rule of false position. And a most easie art of de-
jineating all manner of plaine sun-dyalls. Geometrically taught.
— London. Printed by Tho. Harper for Rich. Whitaker. 1647. (12), 174, 29 pp. Plates. Diagrams. Tables. 14 cm., in 8s,
This card was printcd at the Boston ec Public Library, June 1, 1932.
D402 — Sun-dials. — Mathematics.