RT Journal T1 THe principles of electrotherapy and their practical application. JF Journal of the American Medical Association JO Journal of the American Medical Association YR 1929 FD October 19 VO 93 IS 16 SP 1246 OP 1246 DO 10.1001/jama.1929.02710160060041 UL http://dx.doi.org/10.1001/jama.1929.02710160060041 AB This revised volume on electrotherapy represents a new departure in books on this subject. A detailed description of various apparatus is replaced by a concise discussion of the more important features of the apparatus, the physics and the physiologic effects of the various agencies used. The history of electricity is complete, and is related from 341 B. C. to modern times. Under general principles the action of the electric current, ionization, the rĂ´le of voltage, and the path of the current in the body are considered. In the chapter on galvanism, the interrupted and the sinusoidal current as well as fundamental experiments by Leduc, Inchley, Chantsky and others are cited. Indications as well as contraindications for the use of these agencies are given and are illustrated with case reports. The chapter on the high frequency current is brief, but the subject matter is worth while. In the chapter on surgical