ied on a technical two 60 horse pow- scale. Instead of the water being filtered, as usual, it er Wolf’s en- is treated with ozonized air prepared in ozonizers of gines, two direct the Siemens pattern. The whole plant has been put up and two alternat- ing current dyna- by Siemens & Halske, of… … mer of the silent charge, a certain sign of the proper working of the apparatus, can be watched by the man in charge of the room, which is kept dark. Owing to the careful protection of the high potential terminal, the apparatus can be fearlessly and safely handled by the workmen. The air supply is…
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