... is of high voltage and furnishes us with the X rays for examining the interior parts of the body. The largest treatment room also contains a powerful ozone generator, operated by a dynamo. This supplies the room with allotropic oxygen and is invaluable in treating diseases of the lungs and air passages. This supplies the patient with vitalized air, equal to the most salubrious atmosphere in any ... — The People's Common Sense Medical Adviser in Plain English • R. V. Pierce
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