Quote from the "Preface."
"I have long used problems and fallacies as auxiliary to my other class-room work. The object of such exercises is to break up the routine of text-book recitations, to encourage wider study of scientific treatises, and to develop some independent power of thinking, and of applying the principles which have been learned. In the present state of political economy it seems especially desirable to study subjects, and not text-books. These problems are intended to bring forward the subjects or topics which should be studied, and to guide the student to an investigation of them with the aid of the teacher, and by the use of the leading treatises in the science. The problems are, in their form, almost all, "leading" and effort has been made to put them in such a way that a student who has already studied an elementary text-book can deal with them. When possible, they have been put in that form in which they present themselves in practice. My aim has been to limit the references as much as possible in number, and to concentrate them on the following books: Rogers's Adam Smith, Mill's Principles, Jevons' Theory, Marshall's Economics of Industry, Cairnes's Principles, Walker's Political Economy, and Cossa's Guide."