That the need of an Introduction to Philosophy was felt in the past is shown by the record of systematic lectures and the existence of books upon the subject. There is, however, at the present time a curious dearth of books, whether elementary outlines or advanced treatises, to be used as supplementary to oral teaching. Thus we have nothing that can compare for practical value with the Einleitung in die Philosophie, by Johann Georg Walch, 1727, which treated in ...