The remarkable symposium arranged by Bruce L. Welch and Annemarie S. Welch for the meeting of the American Association for the Advancement of Science in Boston, Massachusetts at the end of the year 1969 was devoted to the physiological effects of audible sound. Dr. Welch and his wife were able to bring together a distinguished group of scientists from all parts of the world. It was very remarkable to be able to discuss the physiological aspects of noise with representative scientists from Israel, France, Germany, Hungary, Russia, Australia, Canada and Argentina. Dr. and Mrs. Welch ran the...