Exposition for GREAT PURITY and X - Ray - Apparatus (1 ) Ruhmkorff Coils (3) Modern Holtz Machines (4) Crookes Tubes (6) Fluorescent Screens. Our Thomson Universal Double Focus Tube is pro nounced by experts the most the production of X Rays. it is the only tube made that provides for adjustment of vacuum. ot Miniature and Decorative Lamps and Electric Signs. EDISON DECORATIVE AND MINIATURE LAMP DEPT. I PURE READY-IIIIIXED PAINTS. FINE VARNISHES. Hard Oil-Finish and Wood Stains. fri k, scientific american, 1896-07-25

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Exposition for GREAT PURITY and X - Ray - Apparatus (1 ) Ruhmkorff Coils (3) Modern Holtz Machines (4) Crookes Tubes (6) Fluorescent Screens. Our Thomson Universal Double Focus Tube is pro nounced by experts the most the production of X Rays. it is the only tube made that provides for adjustment of vacuum. ot Miniature and Decorative Lamps and Electric Signs. EDISON DECORATIVE AND MINIATURE LAMP DEPT. I PURE READY-IIIIIXED PAINTS. FINE VARNISHES. Hard Oil-Finish and Wood Stains. fri k, scientific american, 1896-07-25

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