SPECTACLES.—Every Description of SPECTACLES and EYE-GLASSES for the Assistance of Vision, adapted by means of Smee's Optometer: that being the only correct method of determining the exact focus of the Lenses required, and of preventing injury to the sight by the use of improper Glasses.
BLAND & LONG, Opticians, 153. Fleet Street, London.
VIEWS IN LONDON.
STEREOSCOPES AND STEREOSCOPIC PICTURES.
BLAND & LONG, 153. FLEET STREET, OPTICIANS and PHILOSOPHICAL INSTRUMENT MAKERS, invite attentions to their Stock of STEREOSCOPES of all Kinds, and in various Materials; also, to their New and Extensive Assortment of STEREOSCOPIC PICTURES for the same, in DAGUERREOTYPE, on PAPER, and TRANSPARENT ALBUMEN PICTURES on GLASS, including Views of London, Paris, the Rhine, Windsor, &c. These Pictures, for minuteness of Detail and Truth in the Representation of Natural Objects, are unrivalled.
BLAND & LONG, Opticians, 153. Fleet Street, London.
*** "Familiar Explanation of the Phenomena" sent on Application.
DAGUERREOTYPE MATERIALS.—Plates, Cases, Passepartoutes. Best and Cheapest. To be had in great variety at