16mo, morocco, 2 50 Hutton's The Gas Engine. 8vo, 5 00 Jamison's Mechanical Drawing. 8vo, 2 50 Jones's Machine Design: Part I. Kinematics of Machinery. 8vo, 1 50 Part II. Form, Strength, and Proportions of Parts. 8vo, 3 00 Kent's Mechanical Engineers' Pocket-book. 16mo, morocco, 5 00 Kerr's Power and Power Transmission. 8vo, 2 00 Leonard's Machine Shop, Tools, and Methods. 8vo, 4 00 * Lorenz's Modern Refrigerating Machinery. (Pope, Haven, and Dean.) 8vo, 4 00 MacCord's Kinematics; or, Practical Mechanism. 8vo, 5 00 Mechanical Drawing. 4to, 4 00 Velocity Diagrams. 8vo, 1 50 MacFarland's Standard Reduction Factors for Gases. 8vo, 1 50 Mahan's Industrial Drawing. (Thompson.) 8vo, 3 50 Poole's Calorific Power of Fuels. 8vo, 3 00 Reid's Course in Mechanical Drawing. 8vo, 2 00 Text-book of Mechanical Drawing and Elementary Machine Design. 8vo, 3 00 Richards's Compressed Air. 12mo, 1 50 Robinson's Principles of Mechanism. 8vo, 3 00 Schwamb and Merrill's Elements of Mechanism. 8vo, 3 00 Smith's (O.) Press-working of Metals. 8vo, 3 00 Smith (A. W.) and Marx's Machine Design. 8vo, 3 00 Thurston's Treatise on Friction and Lost Work in Machinery and Mill Work. 8vo, 3 00 Animal as a Machine and Prime Motor, and the Laws of Energetics. 12mo, 1 00 Tillson's Complete Automobile Instructor. 16mo, 1 50 Morocco, 2 00 Warren's Elements of Machine Construction and Drawing. 8vo, 7 50 Weisbach's Kinematics and the Power of Transmission. (Herrmann--Klein.) 8vo, 5 00 Machinery of Transmission and Governors. (Herrmann--Klein.) 8vo, 5 00 Wolff's Windmill as a Prime Mover. 8vo, 3 00 Wood's Turbines. 8vo, 2 50 MATERIALS OF ENGINEERING.