_Practical Geometry, Perspective, and Engineering Drawing_; a Course of Descriptive Geometry adapted to the Requirements of the Engineering Draughtsman, including the determination of cast shadows and Isometric Projection, each chapter being followed by numerous examples; to which are added rules for Shading, Shade-lining, etc., together with practical instructions as to the Lining, Colouring, Printing, and general treatment of Engineering Drawings, with a chapter on drawing Instruments. By GEORGE S. CLARKE, Capt. R.E. Second edition, _with 21 plates_. 2 vols., cloth, 10_s._ 6_d._ _The Elements of Graphic Statics._ By Professor KARL VON OTT, translated from the German by G. S. CLARKE, Capt. R.E., Instructor in Mechanical Drawing, Royal Indian Engineering College. _With 93 illustrations_, crown 8vo, cloth, 5_s._ _The Principles of Graphic Statics._ By GEORGE SYDENHAM CLARKE, Capt. Royal Engineers. _With 112 illustrations._ 4to, cloth, 12_s._ 6_d._ _Dynamo-Electric Machinery_: A Manual for Students of Electro-technics. By SILVANUS P. THOMPSON, B.A., D.Sc., Professor of Experimental Physics in University College, Bristol, etc., etc. _Illustrated_, 8vo, cloth, 12_s._ 6_d._ _The New Formula for Mean Velocity of Discharge of Rivers and Canals._ By W. R. KUTTER. Translated from articles in the ‘Cultur-Ingénieur,’ by LOWIS D’A. JACKSON, Assoc. Inst. C.E. 8vo, cloth, 12_s._ 6_d._ _Practical Hydraulics_; a Series of Rules and Tables for the use of Engineers, etc., etc. By THOMAS BOX. Fifth edition, _numerous plates_, post 8vo, cloth, 5_s._ _A Practical Treatise on the Construction of Horizontal and Vertical Waterwheels_, specially designed for the use of operative mechanics. By WILLIAM CULLEN, Millwright and Engineer. _With 11 plates._ Second edition, revised and enlarged, small 4to, cloth, 12_s._ 6_d._ _Tin_: Describing the Chief Methods of Mining, Dressing and Smelting it abroad; with Notes upon Arsenic, Bismuth and Wolfram. By ARTHUR G. CHARLETON, Mem. American Inst. of Mining Engineers. _With plates_, 8vo, cloth, 12_s._ 6_d._ _Perspective, Explained and Illustrated._ By G. S. CLARKE, Capt. R.E. _With illustrations_, 8vo, cloth, 3_s._ 6_d._ _The Essential Elements of Practical Mechanics; based on the Principle of Work_, designed for Engineering Students. By OLIVER BYRNE, formerly Professor of Mathematics, College for Civil Engineers. Third edition, _with 148 wood engravings_, post 8vo, cloth, 7_s._ 6_d._ CONTENTS: