It is part of the folklore of symbolic logic, and more specifically of the statement calculus, that there is an arithmetic method for determining the truth values of statements of that calculus. A brief survey of texts in logic reveals that the matter seems to be dealt with rarely if at all, and usually only as an exercise ([1], p. 76). It is the purpose of this article to draw the attention of the teachers of mathematics to this rather amusing sidelight of symbolic logic.