Noise—Wanted and Unwanted

An inservice training course on the acoustical spectrum is to be offered by the University of Michigan School of Public Health, in collaboration with the Institute of Industrial Health, from February 5th to 8th. Designed particularly to serve public and industrial health and safety personnel as well as others interested in both the desirable and undesirable effects of noise in the human environment, the intensive four‐day course will cover sound and its behavior, the measurement of sound, ultrasonics, mechanical vibration, biophysics of sound perception, the pathological and emotional effects of sound, and the principles and methods of sound control. The Acoustical Society of America is well represented on the list of speakers. An enrollment fee of $10 has been set and applications should be submitted to H. E. Miller, School of Public Health, the University of Michigan. Ann Arbor, Michigan.