Ethology of Mammals

which tend to capitalize on similarity rather than change. Time ranges of biologic rhythms are explored and an enormous variation is evident ranging from fractions of a second within an individual to millions of years in an evolutionary scale. The influence and interplay of exogenous and endogenous factors in such rhythms are discussed and abnormalities of rhythms are considered to be of fundamental importance in the genesis of maladaptive behaviour patterns. From these considerations the author postulates that a rhythmical hypothesis of experience and behaviour would promote further studies in this area. Various theories of time including Grecian cycles, the timelessness of Christianity, and Einstein's views on relativity are reviewed. The author's own space time theory encompasses and recognizes the possibilities of precognitive phenomena and non-individual experiences and while his evidence is less than completely convincing, he certainly documents the need for re-evaluation of contemporary concepts of time. This book should be of interest to readers with wide varieties of background inasmuch as time has always occupied a central role in man's thinking.