A physics professor explains how the laws of physics work in the game of tennis. Included are studies of string tension, the size, shape, and weight of a racket, ball trajectories, court surfaces, and reflex time. Numerous tables, graphs, and formulas accompany the text. The author suggests such knowledge may enable the player "to gain a point here, a point there." The reader need not be a degree-bearing engineer to profit from the material, but this work is definitely aimed at dedicated students of the game, those who wish to play "with the head as well as the arm." For comprehensive collections only. William H. Hoffman, Ft. Myers-Lee Cty. P.L., Fla.