The Optical Magic Lantern Journal (April 1890)

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THE OPTICAL LANTERN JOURNAL AND PHOTOGRAPHIC ENLARGER. A Magazine of Popular Science for the Lecture-room and the Domestic Curele. Vol. L—No. 11. (astiossed tt, APRIL 1, 1890. Price One Penny. PERKEN, SON & RAYMENT, °° “*rca5on"°™™ “ OPTIMUS.” Each Magic Lantern is efficient for exhibitions. The Lens gives crisp definition, being a superior Achromatic Photographic Combination (large diameter back lens), with rack and finion. It is fitted to a telescopic lengthening tube, so gaining increased focal accommodation. The Condenser is composes of two plano-convex lenses of 4 inches diameter. The refulgent lamp has 3 wicks, (or 4 wicks 2s. extra,) yielding a brilliantly illuminated picture.-Each is complete in box. Mahogany outside Body, 2 Panelled Door, Brass Stages, Sliding Tubes 82s. Perforated Russian Iron Body, Brass Sliding Tubes, 50s. Russian Iron Body, Brass Sliding Tubes, Mahogany outside Body, Japanned Metal Stages and Japanned Metal 7. 30s. Sliding Tubes, 42s. 458 ? Fi ‘ ’ ‘OPTIMUS’ BI-UNIAL LANTERN. 1,,f2 nt OPTIMUS’ TRIPLE LANTERN, Panelled Mahogany Body, and moulded foot, picked out with The Top Lantern may be used separately with Oil Lamp. black, Japanned stages and tubes, Achroniatic PhotoPanelled Mahogany Pody, Moulded foot picked. out with graphic Front Lens, compound condensers... é wu « £512 0 black, Brass Stages and Tubes, Achromatic Front Lens, Ditto ditto with brass stages and sliding tubes 8 8 O Compound Condensers... .. ee wae ee ee 6 £1410 0 THE BRITANNIA WORKS CO. ILFORD, LONDON, E. SOLE MANUFACTURERS OF THE “ILFORD” PLATES. Which have the Largest Sale of any Plates in the World. For Winter Work use only ILFORD BROMIDE PAPERS, for enlargements or contact printing. Rapid or.Slow, rough or smooth. Give finest detail, and best engraving black Tones. ILFORD ALPHA PAPER, to replace albumenized paper. Prints by gaslight. Any colour from black to red. Unequalled brilliancy. ILFORD “ALPHA” LANTERN PLATES, the most successful ever introduced. A perfect plate.