Éléments de la Théorie des Probabilités

LIKE all Prof. Borel's works, this is a very pleasant book to read. It is in three parts, dealing respectively with discontinuous problems, continuous problems, and those in which a priori probabilities are involved. The second part contains, among other things, a useful sketch of Gauss's theory of errors; and the third gives some applications to statistics and biology. Some of the problems are quite amusing; for instance, “Pierre plays écarté with a stranger, who turns up a king the first time he deals. What is the probability of his being a professional cardsharper?”Éléments de la Théorie des Probabilités.By Émile Borel. Pp. viii+190. (Paris: A. Hermann et Fils, 1909.) Price 6 francs.