NEWTON, Isaac (1642-1727). Opticks: Or, A Treatise of the Reflections, Refractions, Inflections and Colours of Light. London: for W. and J. Innys, 1718. 8° (200 x 125mm). 12 folding engraved plates, publisher's advetisements at end (lacks preliminary blanks, lightly spotted). Contemporary panelled calf (rebacked, inner hinges strengthened with brown adhesive tape, front cover with some scuff marks, rubbed). Second edition, second impression. Babson 134; Gray 176.