BOOKS RECEIVED 171 



Protective Relays: their Theory, Design, and Practical Operation, By 

 Victor Todd. New York: McGraw-Hill Book Company, 370 Seventh 

 Avenue ; and London : 6 & 8 Bouverie Street, E.C.4, 1922. (Pp. 

 xii + 274, with 242 figures.) Price 12s. 6d. net. 



Construction : Cost, Keeping and Management. A Treatise for Engineers, 

 Contractors, and Superintendents engaged in the Management of 

 Engineering Construction. By Halbert Powers, Gillette and Richard 

 T. Dana. New York: McGraw-ffill Book Company, 370 Seventh 

 Avenue; and London: 6 & 8 Bouverie Street, E.C.4, 1922. (Pp. 

 xvii + 572.) Price 25s. net. 



The Airplane Engine. By Lionel S. Marks, B.Sc, M.M.E. New York: 

 McGraw-Hill Book Company, 370 Seventh Avenue: and London: 

 6 & 8 Bouverie Street, E.C.4, 1922. (Pp. ix + 454.) Price 305. net. 



Mechanical Testing: a Treatise in Two Volumes. By R. G. Batson, Mr. 

 M.Inst.C.E., M.I.Mech.E., Associate of King's College, London, and 

 J. H. Hyde, A.M.Inst.C.E., M.I.A.E., A.M.LMech.E. Vol. I, Testing 

 of Materials of Construction. London: Chapman & Hall, 11 Henrietta 

 Street, W.C.2, 1922. (Pp. xiii + 413, with 256 figures.) Price 21s. net. 



Analogies Mecaniques de r£lectricite. By J. B. Pomey. Paris: Gauthier- 

 Villars et Cie, 55 Quai des Grands-Augustins, 1921. (Pp. xvi -h 149.) 

 Price 15 frs. 



Problemes et exercices d'61ectricite generale. Par P. Janet, Professeur 

 k la Faculty des Sciences de TUniversite de Paris. Paris : Gauthier- 

 Villars et Cie, 55 Quai des Grands-Augustins, 1921. (Pp. vii + 254.) 



Notes and Examples on the Theory of Heat and Heat Engines. By John 

 Case, M.A. Cambridge: W. Hefier & Sons, 1922. (Pp. iv -|- 138,) 

 Price 7s. 6d. net. 



Analytical Mechanics for Engineers. By Fred B. Seely, M.S., Associate 

 Professor of Theoretical and Applied Mechanics, and Newton E. Ensign, 

 A.B., B.S., Associate in Theoretical and Applied Mechanics, Univer- 

 sity of Illinois. New York : John Wiley & Sons ; London : Chapman 

 & Hall, 1921. (Pp. xiv + 486, with 454 figures.) Price 245. net. 



Model Questions and Answers on the Thermionic Valve. Compiled by 

 Clifford Jones, Principal of the North-Eastem School of Wireless Tele- 

 graphy, Newcastle-on-Tyne. Glasgow : James Munro & Company, 

 Marine Engineering and Nautical PubUshers. (Pp.44.) Price 25. 6(i. net. 



Modern Practice in Heat Engines. By Telford Petrie, M.Sc, A.M.LMech.E. 

 London: Longmans, Green & Co., 39 Paternoster Row, 1922. (Pp. 

 X + 264, with III illustrations and 2 plates.) Price 155. net. 



Mechanical Stokers, including the Theory of Combustion of Coal. By 

 Joseph G, Worker, B.S., Secretary of the Stoker Manufacturers' Asso- 

 ciation of the United States, and Thomas A. Peebles, B.S., Member of 

 American Society of Mechanical Engineers. New York: McGraw- 

 Hill Book Company, 370 Seventh Avenue; and London: 6 & 8 

 Bouverie Street, E.C.4, 1922. (Pp. xiii -t- 258, with 109 illustrations.) 

 Price 15s. net. 



The Principles of Mechanical Refrigeration : a Study Course for Operating 

 Engineers. By H. J. Macintire, S.S., M.M.E. New York: McGraw- 

 Hill Book Company, 370 Seventh Avenue ; and London : 6 & 8 Bou- 

 verie Street, E.C.4, 1922. (Pp. \dii + 252, with 114 figures.) Price 

 125. 6d. net. 



The Analysis of Fuel, Gas, Water, and Lubricants. By S. W. Parr, New 

 York: McGraw-Hill Book Company, 370 Seventh Avenue; and 

 London: 6 & 8 Bouverie Street, E.C.4, 1922. (Pp. xii -h 250, with 

 54 diagrams.) Price 12s. ()d. net. 



Human Traits and their Social Significance. By Irwin Edman, Ph.D., 

 Instructor in Philosophy, Columbia University. London : Constable 

 & Co. (Pp. xi + 467.) Price 15s. net. 



