Mathematics.- Pitiscus (Bartholomaeus) Trigonometry: or, the Doctrine of Triangles, third edition in English, Printed by T.F. for G. Hurlock, 1642; bound with A Canon of Triangles, printed for John Tap, 1630, together 2 works in 1, first title within decorative woodcut border, woodcut diagrams, second title with woodcut decorations, some foxing, embossed stamp to first 3 ff., small burn-hole to A2 with slight loss of text, 18th century sprinkled calf, spine gilt with red morocco label, joints repaired, [STC 19966 and 19968a], 4to

⁂ Very good copy (from the Macclesfield library) of the third English edition, following the original Latin text published in Heidelberg in 1595 and English editions of 1614 and 1630. Pitiscus coined the term "trigonometry" - "Although [he] worked much in the theological field, his proper abilities concerned mathematics, and particularly trigonometry. His achievements in this field are important in two respects: he revised the tables of Rheticus to make them more exact, and he wrote an excellent systematic textbook on trigonometry, in which he used all six of the trigonometric functions" (DSB). The translator, Ralph Handson, also adds in a section on the uses of trigonometry in solving navigational problems.