The Biological and Social Meaning of Race

ships between magnetic fields, electroencephalographic changes, and subjective time perception. Suclh investigations will have increasing relevance for human behavior as man renounces the geomagnetic and electromagnetic assumptions of eartlh andl unidertakes prolonged space flight. The above discussions are representative samples from a volume that will surely intrique any curiotus mindl. Its message, that biological systems as complex as man possess primitive inherent oscillators that are entrained by external inputs as (liverse as nonvisual electromagnetic radiation, geomagnetic fields, and group pressture, shouldl have increasing import for biological and social scientists. Thle fact that suclh iinternal rlhythmls can be readily desynchronized causing marked physiological and behavioral change provides an important paradigm for future medlical andI psychiatric research. Gay Luce, in bringing together tllis informationi, lhas provi(lecl an invaluable plintlh for those starting in this new and buirgeoning field. F. GORDON FOSTER Connecticut Mental Health Center New Haven