Opticks : or, A treatise of the reflections, refractions, inflections and colours of light
Isaac Newton's Opticks in the 1730 fourth edition, printed in London by William Innys for natural philosophers and mathematical readers. Line diagrams trace rays through prisms, lenses and apertures with lettered points and dense hatching, alongside woodcut headpieces of urns and foliage and initial blocks framed by birds and leaves; useful for geometric ray figures and small letterpress ornament.
