CONTENTS:--Introductory. Section I.--THEORY: Thermodynamic Cycles. Combustion and Explosion. Thermodynamics. Section II.--GAS ENGINES AND GAS PRODUCERS: The Gas Engine. The Gas Producer. Blast Furnace and Coke-Oven Gases. Section III.--OIL AND PETROL ENGINES: The Oil and Petrol Engine. Petrol Engine Efficiency and Rating. Index. THE MODERN STEAM ENGINE: THEORY, DESIGN, CONSTRUCTION, USE. A Text-Book for Students. By JOHN RICHARDSON, M.Inst.C.E. With 300 Illustrations. Demy 8vo. 7_s._ 6_d._ net. CONTENTS: Unit of Power. Natural Forces. Early Types of Engine. The Watt Engine. The Use of Steam in Multiple Cylinder or Compound Engines. Valve Gears. Double or Compound Slide Valves. Releasing Valve Gear. Exhaust Valves and Valve Driving Gear. The Governor. Electrical Regulation. Condensers. The Steam Turbine. Design of Details. Examples of Various Types. Feed and Steam Heating. Hints to Users. Appendix. Tables and Formulæ. Index. _Engineer._--"Essentially a practical treatise." THE CONSTRUCTION AND WORKING OF INTERNAL COMBUSTION ENGINES. Being a Practical Manual for Gas Engine Designers, Repairs and Users. By R. E. MATHOT. Translated by W. A. TOOKEY. Medium 8vo. With over 350 Illustrations. 24_s._ net. THE ELEMENTS OF MECHANICS OF MATERIALS. A Text-Book for Students in Engineering Courses. By C. E. HOUGHTON, A.B., M.M.E., Associate Professor of Mechanical Engineering, New York University. 7_s._ 6_d._ net. CONTENTS: Chapter I.--APPLIED MECHANICS. Chapter II.--APPLICATIONS. Chapter III.--BEAMS. Chapter IV.--TORSION. Chapter V.--THE ELASTIC CURVE. Chapter VI.--LONG COLUMNS. Chapter VII.--COMBINED STRESSES. Chapter VIII.--COMPOUND BARS AND BEAMS. TABLES. HYDRAULICS AND ITS APPLICATIONS. By A. H. GIBSON, M.Sc., Assoc.Mem.Inst.C.E., Victoria University, Manchester. 774 pages. 308 Figures. Demy 8vo. 15_s._ net. _Engineering Times._--"This is the best book to date on the subject." NATURAL SOURCES OF POWER. By ROBERT S. BALL, B.Sc., A.M.Inst.C.E. With 104 Diagrams and Illustrations. Extra Crown 8vo. 6_s._ net. CONTENTS:--Preface. Units with Metric Equivalents and Abbreviations Length and Distance. Surface and Area. Volumes. Weights and Measures. Pressures. Linear Velocities. Angular Velocities. Acceleration. Energy. Power. Introductory Water Power and Methods of Measuring. Application of Water Power to the Propulsion of Machinery. The Hydraulic Turbine. Various Types of Turbines. Construction of Water Power Plants. Water Power Installations. The Regulation of Turbines. Wind Pressure, Velocity, and Methods of Measuring. The Application of Wind Power to Industry. The Modern Windmill. Constructional Details. Power of Modern Windmills. Appendices A, B, C. Index. METALLURGY MALLEABLE CAST IRON. By S. JONES PARSONS, M.E. Illustrated. Demy 8vo. 8_s._ net.