An essay on visual glasses : (vulgarly called spectacles) wherein it is shewn ... that the common structure of those glasses is con[trar]y 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 . ... By B. Martin.

Bibliographic Details

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