An essay on visual glasses : (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.

Bibliographic Details

Main Author:	Martin, Benjamin, 1705-1782
Format:	eBook
Language:	English
Edition:	The third edition.
Series:	Eighteenth century collections online.
Online Access:	Full text online