Its Determination and Relation to Credit Interest and Crises. By IRVING FISHER, Professor of Political Economy in Yale University, assisted by HARRY G. BROWN, Instructor in Political Economy, Yale University. _Cloth, xxii + 505 pp., $3.00 net_ The Income Tax A Study of the History, Theory, and Practice of Income Taxation at Home and Abroad. By EDWIN R. A. SELIGMAN, Professor of Political Economy, Columbia University. _Cloth, xi + 711 pp., $3.00 net; by mail, $3.20_ International Commercial Policies with Special Reference to the United States: a Text-book, by GEORGE MYGATT FISK, Ph.D., Professor of Commerce in the University of Illinois. Published in New York, 1907. _Half leather, 288 pp., 12mo, $1.25 net_ The Law of the Employment of Labor By L. D. CLARK. _Cloth, 12mo_ Elements of Economics of Industry Being the First Volume of Elements of Economics. By ALFRED MARSHALL, Professor of Political Economy in the University of Cambridge. Published in London, 1892. Latest reprint, 1907. _Cloth, 440 pp., 12mo, $1.00 net_ Essentials of Economic Theory as Applied to Modern Problems of Industry and Public Policy By JOHN BATES CLARK, Ph.D., Professor of Political Economy in Columbia University. Published in New York, 1907. _Cloth, 566 pp., 12mo, $2.00 net_ A History of Political Economy By JOHN KELLS INGRAM, LL.D., Fellow of Trinity College, Dublin. Published in New York, 1907. _Cloth, 250 pp., 12mo., $1.50 net_ Introduction to Public Finance By CARL COPPING PLEHN, Ph.D., Professor of Finance in the University of California. Published in New York, 1896. Revised and enlarged edition, 1909. _Cloth, 468 pp., 12mo, $1.75 net_ History of Coinage and Currency in the United States, and the Perennial Contest for Sound Money By A. BARTON HEPBURN. Published in New York, 1903. _Cloth, 666 pp., 8vo, $2.00 net_ Public Finance By C. F. BASTABLE, M.A., LL.D., Professor of Political Economy in the University of Dublin. Published in London, 1892. Third edition, 1903. _Cloth, 780 pp., 8vo, $4.25 net_ Practical Problems in Banking and Currency Being a number of selected addresses delivered in recent years by prominent bankers, financiers, and economists. Edited by WALTER HENRY HULL. With an introduction by the Honorable C. F. PHILLIPS, of New York. Published in New York, 1907. _Cloth, 596 pp., 8vo, $3.50 net_