BENNETT'S MODEL WATCH, as shown at the GREAT EXHIBITION. No. 1. Class X., in Gold and Silver Cases, in five qualities, and adapted to all Climates, may now be had at the MANUFACTORY, 65. CHEAPSIDE. Superior Gold London-made Patent Levers, 17, 15, and 12 guineas. Ditto, in Silver Cases, 8, 6, and 4 guineas. First-rate Geneva Levers, in Gold Cases, 12, 10, and 8 Guineas. Ditto, in Silver Cases, 8, 6, and 5 guineas. Superior Lever, with Chronometer Balance, Gold, 27, 23, and 19 guineas. Bennett's Pocket Chronometer, Gold, 50 guineas; Silver, 40 guineas. Every Watch skilfully examined, timed, and its performance guaranteed. Barometers, 2l., 3l., and 4l. Thermometers from 1s. each BENNETT, Watch, Clock, and Instrument Maker to the Royal Observatory, the Board of Ordnance, the Admiralty, and the Queen, 65. CHEAPSIDE. * * * * * PHOTOGRAPHY. A COMPLETE SET OF APPARATUS for 4l. 4s., containing an Expanding Camera, with warranted Double Achromatic Adjusting Lenses, a Portable Stand, Pressure Frame, Levelling Stand, and Baths, complete. PORTRAIT LENSES of double Achromatic combination, from 1l. 12s. 6d. LANDSCAPE LENSES, with Rack Adjustment, from 25s. A GUIDE to the Practice of this interesting Art, 1s., by post free, 1s. 6d. French Polished MAHOGANY STEREOSCOPES, from 10s. 6d. A large assortment of STEREOSCOPIC PICTURES for the same in Daguerreotype, Calotype, or Albumen, at equally low prices. ACHROMATIC MICROSCOPES. Beautifully finished ACHROMATIC MICROSCOPE, with all the latest improvement and apparatus, complete from 3l. 15s., at C. BAKER'S. Optical and Mathematical Instrument Warehouse, 264. High Holborn (opposite Day & Martin's). * * * * * PHOTOGRAPHIC INSTITUTION.--An EXHIBITION of PICTURES, by the most celebrated French, Italian, and English Photographers, embracing Views of the principal Countries and Cities of Europe, is now OPEN. Admission 6d. A Portrait taken by MR. TALBOT'S Patent Process, One Guinea; Three extra Copies for 10s. PHOTOGRAPHIC INSTITUTION, 168. NEW BOND STREET. * * * * * PHOTOGRAPHIC CAMERAS.--OTTEWILL'S REGISTERED DOUBLE-BODIED FOLDING CAMERA, is superior to every other form of Camera, for the Photographic Tourist, from its capability of Elongation or Contraction to any Focal Adjustment, its Portability, and its adaptation for taking either Views or Portraits.--The Trade supplied. Every Description of Camera, or Slides, Tripod Stands, Printing Frames, &c., may be obtained at his MANUFACTORY. Charlotte Terrace, Barnsbury Road, Islington. New Inventions, Models, &c., made to order or from Drawings. * * * * *