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Violet Rays as applied with the Violetta.
Chicago, Bleadon-Dun, 1923. 60 pp. 8vo (15.3 x 22.8 cm.). Original illustrated wrappers (slightly soiled; a few very small tears in outer margin of rear cover). With 4 coloured plates and numerous illustrations.
Due to the technical developments in the early 20th century, quackery was no longer limited to drugs or 'medicines'. The Golden Adge of device quackery started fluorising. Detailed description of the Violetta high frequency current apparatus and its application. During the Interbellum, the high frequency generator was widely used in the U.S. and Europe for self cure and therapy. Even nowadays you can easily find such instruments on fly-markets, but not the manuals for them. According to their manufacturers, Violet rays cures almost everything.
