Tuesday 22 July 2014 at 18:51
A selection of images from High Frequency Electric Currents in Medicine and Dentistry (1910) by champion of electro-therapeutics Samuel Howard Monell who claimed his high frequency currents of electricity could treat a variety of ailments, including acne, lesions, insomnia, abnormal blood pressure, depression, and hysteria.
Source: http://publicdomainreview.org/collections/high-frequency-electric-currents-in-medicine-and-dentistry-1910/