Abstract
A revised edition of the author's dissertation, originally published in 1941 and for several years out of print. The major change is in Chapter VI, "Formal Analysis of Inductive Probability," which has been entirely rewritten so as to take into account more recent writings on the logic of induction by Carnap, Reichenbach and others. Although studies in logic are not neglected, the author remains primarily concerned with the philosophic problem of finding a rational justification for inductive arguments. There is an excellent bibliography, but no index.--A. R. A.