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SPECTACLES, &c.--The subscribers Manufac-
~ turers Of Mathematical, Optical, and Philosoph-
cal Instruments, (at the solicitation of their friends
have added to their establishments the article of Spec
tacles in every variety of forms. where glasses of
the best quality, and correctly ground on optical
principles, may be had to suit the sight Of neariy) all
persons; gold frames made to order, Of any pattern
glasses fitted to old frames. and all work in the line
done in the best manner; where may be had great
variety of Mathematical Drawing instruments from
~ to $50, Engineers and Surveyors Instruments Of
superior quality, Pocket and other Telescopes supe-
rior Thermometers, in mahogany cases. for halls or
parlors, Barometers, &c. Shortly will be published
in pamphlet form, with plates Essay on the Human
Eye showing IFS defects, and explaining the applica-
tion OF Optical Glasses, to its assistance, &c.


PATTEN & SON