I. Labor--Production. II. Commerce--Exchanges. III. Capital--Skill--Invention--Intellectual Property. IV. Money--The Balance of Trade. V. Paper Money--Interest--Usury. VI. Slavery--Hired Labor--Proportion--Co-operation. VII. Monopoly--The Law of Prices--Effect of Duties on Cost. VIII. Agriculture as affected by Protection--Views of the Fathers. IX. The State--Its Legitimate Sphere--Powers and Duties--Free Trade Axioms considered. X. Protection for Agriculture. XI. Manufacturers and their Needs. XII. The Laboring Class--Its Rights, Interests, Duties, and Needs. XIII. The Interest of Consumers--Iron. XIV. Protection Illustrated--Sugar. XV. The Harmony of Interests--The Sugar Industry of France invigorating other Industries--Beet Sugar on its Triumphal March. XVI. American Ship-Building, Shipping, and Foreign Commerce. XVII. Credit--Its Uses and Abuses--Foreign Indebtedness--Our National Debt. XVIII. What has been elucidating what shall be. XIX. Taxation, Direct and Indirect. XX. Co-operation. XXI. Wool and Woolens. XXII. Immigration. XXIII. Specific--Ad Valorem--Minimum. XXIV. Conclusions. Analytical Appendix. For sale at THE TRIBUNE OFFICE. Price, =$1.50=. Sent by Mail, postpaid, on receipt of Price. Address =THE TRIBUNE, New York.= EWBANK'S Hydraulics & Mechanics _A descriptive and historical account of Hydraulic and other Machines for Raising Water. Also, Observations on Mechanic Arts and the Steam Engine._ Illustrated by nearly Three Hundred Engravings, 16th edition, with additional matter. By THOMAS EWBANK, _late Commissioner of Patents_. During twenty years this work has been recognized as a standard authority, and nearly as many editions have been called for, several of the earlier having been issued from the _Tribune Office_. By frequent additions and changes it has been kept fairly abreast of the progress of invention and science. One large octavo vol., bound in cloth. Price $5. Sent by mail en receipt of price. Address =THE TRIBUNE, New York,= =Pear Culture for Profit.= An illustrated work (2d edition), by P. T. QUINN, a Practical Horticulturist, for many years a successful grower of Pears for market. The subject is simply and thoroughly treated under the following heads: _Varieties, Aspect, Preparation of the Soil, Distance Apart, Selecting Trees, Dwarfs and Standards, Time of Planting, Planting, Digging trees from the Nursery-Row and Packing Varieties to Plant, Pruning, Orchard Record_. This Work will be found a complete Practical Manual for the Pear Grower, whether for pleasure or profit. 1 vol., handsomely bound in cloth. Price $1. Sent free by mail on receipt of price. =THE TRIBUNE, New York.= =Money in the Garden.=