8vo, pp. viii, 336. Title-page printed in red and black. Contemporary polished sheep, spine divided by raised bands between gilt rules, red morocco label. Margins of title-page and last leaf browned from turn-ins, a few spots. A little rubbed and marked, slight wear to headcap and corners, sometime polished. Ownership inscription of James Bertram to title-page.
A scarce late edition of Watts's textbook on logic, and the only edition printed in Glasgow known to ESTC, which records just six copies in the UK (4 in Scotland plus BL & Oxford) and five in North America. The book saw dozens of London printings in the 18th century, in large part because it was the standard textbook on the subject at Oxford and Cambridge; there were even several Edinburgh editions, but Glasgow had its own tradition, with Watts' contemporary Francis Hutcheson (professor of Moral Philosophy at Glasgow) leaving a posthumously published short treatise on logic.