The Principles of Electrotherapy and Their Practical Application.

The author has condensed in this small volume more practical facts than are usually found in such works. Part I deals with the therapeutic action of current electricity, including the constant current, interrupted currents of low and of high frequency, and currents derived from the static machine. When technical and mathematical subjects are referred to, the text is well illustrated by diagrams and formulas. Part II deals with the therapeutic action of radiant energy, including radiant heat and light, ultraviolet radiation and roentgen rays. The Wintz method of treating malignant growths is gone into in some detail. Parts III and IV take up electro-diagnosis and the application and mode of action of electricity in peripheral nerve lesions and in nervous and other diseases. The chapter on peripheral nerve lesions is full of interest, and brings out the newer methods of treatment and diagnosis developed during the late war. Taken as