Hawkins electrical guide ... : questions, answers & illustrations : a progressive course of study for engineers, electricians, students and those desiring to acquire a working knowledge of electricity and its applications ; a practical treatise (1914)
Hawkins, N. (Nehemiah), 1833-1928 · New York : T. Audel & Co. · leaf 569
S 3,223 between the first and second, and second and third lumbar vertebrae,following Abrams method of vertebral concussion. The treatmentshould be prolonged for five, ten, or even fifteen minutes, as the responsewarrants. This is of value in malaria and pathological states char-acterized by an… … Fig. 4,680.—Columbia vibrating chair. In appearance this is a heavy and substantial chair,and there is nothing about it that would give apprehension to the most sensitive patient.Concealed rubber bumpers prevent transmission of the vibration to the floor and preventnoise, so that in operation there…
Electrical engineering
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