This comprehensive study of probability considers the approaches of Pascal, Laplace, Poisson, and others. It also discusses Laws of Large Numbers, the theory of errors, and other relevant topics.

The reviewer welcomes Von Mises' book as a most valuable contribution to the nowadays so badly needed clarifying of philosophical terminology. The author confesses himself to positivism, but his work bears a far more psychological and significal stamp than those of most present positivists.