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SPECTACLES, &c.-Thc subscribers, Hlan,fac-
- turers of Mathematical, Optical, and Phosophi-
cal Instruments Cat the solicitation of their friends
have added to their establishment 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
W to $50, Engineers and Surveyors Instruments of
superior quality, Pocket and other Telescopes, supe-
ror Thermometers, in mahogany cases, for halls or
parlors Barometers, &c. Shortly will be published,
~ pamphlet form, with plates an Essay onthc Human
snowng ils defects and explaining the applica
tion Of Optical Glasses, to its assistance, &C. .


PATTEN s. SON,


South side Pennsylvania avenue,


nov o--lm between 10th and llth sts