gives many very valuable tables and collections of statistics bearing upon this question.
W. G. Sumner's “History of Protection in the United States” is a very vigorous account of the evils of the various tariffs and the protective system.
D. A. Wells's “Reports” as Special Commissioner of the Revenue, and his numerous pamphlets (see Putnams' publisher's catalogue), are [pg 628] full of facts, and give the results of special study of the subject as affecting the United States.
A. L. Perry's “Political Economy” gives a radical free-trade view.
Henry Fawcett's “Free Trade and Protection” explains the causes which have retarded the more general adoption of free trade.
J. E. Cairnes's “Leading Principles of Political Economy” gives the ablest discussion of the economic principles involved in the question which has yet been offered to the reader. Moreover, almost all our systematic writers on political economy (excepting, perhaps, Bowen and R. E. Thompson) give the system of free exchange their support on economic grounds.