Abstract
In the tradition of Kant, Bergson, and Whitehead, the author analyzes the fundamental concepts of biology in terms of their relation to time. By virtue of distinctions between objective and subjective time, and between causal unities and teleological wholes, the author presents a uniquely dualistic theory of biology in which the notion of teleology can be properly applied only to man, and purpose is exhibited only by the higher animals which possess a partly subjective time structure. --J. F. D.