It has been the purpose, on the numerous controverted points, to set forth clearly both sides of the subject, while there is no attempt to conceal the convictions of the writer.
The author has drawn largely upon the works of Henry C. Carey. In respect to the labor-question he is specially indebted to Professor Francis A. Walker's able treatises. The late Professor Jevons has furnished valuable aid on the Instrument of Exchange. Other writers are cited as occasion has demanded.