_A Practical Treatise on Heat, as applied to the Useful Arts_; for the Use of Engineers, Architects, etc. By THOMAS BOX. _With 14 plates._ Third edition, crown 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-Ingenieur.’ By LOWIS D’A. JACKSON, Assoc. Inst. C.E. 8vo, cloth, 12_s._ 6_d._ * * * * * _Hydraulics of Great Rivers; being Observations and Surveys on the Largest Rivers of the World._ By J. J. REVY. Imp. 4to, cloth, with _eight large plates and charts_, 2_l._ 2_s._ * * * * * _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._ * * * * * _The Indicator Diagram Practically Considered._ By N. P. BURGH, Engineer. _Numerous illustrations_, fifth edition. Crown 8vo, cloth, 6_s._ 6_d._ “This volume possesses one feature which renders it almost unique; this feature is the mode in which it is illustrated. It is not difficult to take a diagram if the instrument is once set, and the setting with stationary engines is occasionally easy enough, but circumstances continually arise under which the young engineer is completely at a loss as to how to obtain a diagram. All uncertainty will be removed by referring to the book under consideration: here we have drawings of the arrangements to be adopted under every conceivable circumstance, drawings, we may add, illustrating the practice of the best engineers of the day.”--_Engineer._ * * * * * _Link-Motion and Expansion Gear Practically Considered._ By N. P. BURGH, Engineer. _Illustrated with 90 plates and 229 wood engravings_, small 4to, cloth, 30_s._ * * * * * _The Mechanician and Constructor for Engineers_, comprising Forging, Planing, Lining, Slotting, Shaping, Turning, Screw Cutting, etc. By CAMERON KNIGHT. _Containing 96 plates, 1147 illustrations, and 397 pages of letterpress._ Cheaper edition, cloth, 18_s._ * * * * * _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, _illustrated by numerous wood engravings_, post 8vo, cloth, 7_s._ 6_d._ CONTENTS: