TRIGONOMETRY.
Keill, John, 1671-1721.
Trigonometriae pland&e & sphaeric&b elementa. Item De natura et arithmetica logarithmorun Tractatus brevis.
Oxonidé, e Theatro Sheldoniano. Impensis Henr. Clements bibliop. Oxoniensis. 1715.
76 pe illus., 2 fold. diagrs. 20cm.
Title illustration: Sheldonian Theatre. The illustrations on p.22, 30 & 39 have attach-
ed flaps. MB