An essay on visual glasses

Publication Date1757
Remainder(vulgarly called spectacles) wherein it is shewn ... 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. ... illustrated by a large copper-plate-print. By B. Martin
Publisherprinted for the author, and sold at his house


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