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22 THEATRICAL LIME LIGHT BOXES. No. I. Theatrical Lime Light Box, fitted with strong oxy-hydrogen mixed Gas Burner, 6-inch Plano-convex Lens and 4 coloured glasses ... 2 o o No. 2. Best Iron-lined Theatrical Lime Light Box, fitted complete on stand with 6-inch Plano-convex Lens, 6-inch focus, revolving disc, with 4 coloured mediums and strong oxy-hydrogen mixed Gas Burner 300 No. 3. Do., with 7-in. Plano-convex Lens, 7-in. focus ... ... ... 400 No. 4. Do., with 8-in. Plano-convex Lens, 8-in focus ... ... ... 5 10 o No. 5. Do., with 9-in. Plano-convex Lens, i8-in. focus ... ... ... 5 10 o A good cheap Limelight Box, with 6-in. Lens, 4 coloured Glasses and Jet i to o THEATRICAL LIME LIGHT LENSES ONLY.—(Plano-convex.) OPTICAL LANTERN OBJECTIVES. With Rack and Pinion Adjustment for short and long focus Double Combination Achromatic Lenses. These Optical Lantern Fronts are of the best make and finish, with double pinions to the rack adjustment, and so constructed that the brass Cylinders, carrying short and long focus Double Combination Lenses can be used. Each brass Cylinder is fitted with a new shape hinged Instantanious Shutter or Flasher, having grooves to carry shapes of coloured glass for tinting slides, and has the focal length engraved on it, and is fitted with double Combination Achromatic Lenses, with large size Lenses to the back Combination. These Lenses are a very great improvement on the old single Achromatic Lenses, and they can be fitted to any Lantern that has Telescopic Draws, or to any Lantern without Telescopic Draws by the addition of brass lengthening tubes. Four Brass Cylinders can be had with each Front, of the following focii;— No I Cylinder, 44-inch back focus. No. 3 Cylinder, 9-inch back focus. No. 2 ,, 64 ,, ,, No. 4 ,, u ,, ,, The Cylinders can be changed in a moment, without unscrewing the front from, the nozzle of Lantern. Price of Front, with double pinions to the rack adjustment each 18/0 Price of Brass Cylinders, with Double Combination Achromatic Lenses, with large size Lenses to the back combination, and fitted with new shape hinged Shutter or Flasher, and having grooves to carry shapes of coloured glass for Tinting Slides each 18/0 The above Cylinders can be had with either the hinged Instantaneous Shutters or Flashers, or with the Sliding Shutters or Flashers, as desired. Set of 6 Coloured Glasses, fitted in a leather case, for tinting slides for the above cylinders Price per set ... each 2/6 FRONT LENSES FOR LANTERNS. With Rack and Pinion Adjustments. 'Double Combination Achromatic Front Lenses, mounted in brass, with rack and pinion adjustment Price 12/0 Ditto, ditto, ditto, with large size Lenses to the back combination, and fitted with Sliding Shutter or Flasher Price 15/0 Ditto, ditto, but with double pinions to the rack adjustment, having grooves^] to carry shapes of coloured glass for tinting slides,and of superior finish Price 24/0 -