BRIGGS, William (1642-1704). Nova visionis theoria. London: J.P. for Samuel Simpson, 1685. 8o (148 x 85 mm). Engraved folding plate. (Some minor marginal browing, short wormtrack on upper margin of first quire). Modern half calf antique. FIRST EDITION IN BOOK FORM of Briggs' treatise on the physiology of vision, which was reprinted with an introduction by Sir Isaac Newton. It was presented before the Royal Society in 1681 and first printed in the Philosophical Collections (1682). The second treatise, Continuatio theoriae praecedentis was printed in the Philosophical Transactions in 1683. Garrison-Morton 1481.3 (journal issue of first part); NLM/Krivatsy 1778.