http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
(vulgarly called spectacles) wherein it is shewn, from the principles of optics, and the nature of the eye, that the common structure of those glasses is contrary to the rules of art, to the nature of things, &c. and very prejudicial to the eyes. The nature of vision in the eye explained, and glasses of a new construction proposed. The whole illustrated by a large copper-plate print. By B. Martin
"A catalogue of philosophical, optical, and mathematical instruments, made and sold by Benjamin Martin": pp.[28]-32.
Reproduction of original from the John Rylands University Library of Manchester.
Electronic reproduction. Farmington Hills, Mich. : Thomson Gale, 2003. Available via the World Wide Web. Access limited by licensing agreements s2003 miunns