BOOKS RECEIVED 171 



Essentials of Physiology. By F. A. Bainbridge. M.D., D.Sc, F.R.C.P., 

 F.R.S., and J. AcworthMenzies, M.A., M.D. Fourth Edition. London: 

 Longmans, Green & Co., 39 Paternoster Row, 1920. (Pp. iv + 497, with 

 194 illustrations.) Price 14s. net. 



Encyclopaedia Medica. Under the General Editorship of J. W. Ballantyne, 

 M.S.,C.M.. F.R.C.P.E. Volume VII. Intestines to Labour. Edinburgh 

 and London : W. Green & Son, 1921. (Pp. vii + 611.) Price 265. 



The Mothers' Clinic. For Birth Control. By Marie Carmichael Stopes, D.Sc. 



Ph.D. London : The Mothers' Clinic, 61 Marlborough Road, HoUoway, 



N., 1921. (Pp. 12.) 

 This little pamphlet gives the history of the formation of a Clinic founded 

 by the author of the pamphlet and her husband, Humphrey Verdon Roe. 

 The Clinic was opened on March 17, 1921, and includes many well-known 

 names in its list of patrons. 



Wireless Telegraphy, with Special Reference to the Quenched-spark System.. 

 By Bernard Leggett, A.M.I.E.E., late Wireless Technical Staff, Messrs. 

 Siemens Bros. & Co., late Of&cer in Charge of Trench Wireless, ist 

 Corps, B.E.F. London : Chapman & Hall, 11 Henrietta Street, W,C.2». 

 1921. (Pp. vi + 485, with 230 figures.) Price 30s. net. 



Opportunities in Engineering. By Charles M. Horton. London: University 

 of London Press, 18 Warwick Square, E.C.4, 1921. (Pp. iv + 90.) 

 Price 3s. 6i. net. 



Artificial Light : Its Influence upon Civilisation. By M. Luckiesh, Director 

 of Applied Science, Nela Research Laboratory, National Lamp Works 

 of General Electric Company. London : University of London Press. 

 (Pp. xiv + 366, with 41 illustrations.) Price 12s. 6d. net. 



Electrical Engineering. By T. F. Wall, D.Sc, D.Eng., Assoc. M. Inst. C.E., 

 A.M.I.E.E. Department of Applied Science, University of Shefi&eld, 

 London : Methuen & Co., 36 Essex Street, W.C, 1921. (Pp. xi + 491, 

 with 4 plates and 461 figures.) Price 21s. net. 



Gas Torch and Thermit-welding. By Ethan Viall, Editor, American Machin- 

 ist. New York : McGraw-Hill Book Company, 370 Seventh Avenue ; 

 London : 6 and 8 Bouverie Street, E.C.4, 192 1. (Pp. xi + 434, with 342. 

 illustrations.) Price 22s. net. 



Electric Welding. By Ethan Viall, Editor, American Machinist. New 

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

 6 and 8 Bouverie Street, E.C.4, 1921. (Pp. xii + 417, with 329 illustra- 

 tions.) Price 22s. net. 



Elements of Fuel, Oil, and Steam Engineering. A Practical Treatise dealing 

 with Fuel Oil for the Central Station Man, the Power Plant Operator, 

 the Mechanical Engineer, and the Student. By Robert Sibley, B.S., and 

 C. H. Delany, B.S., M.M.E. Second Edition. New York : McGraw- 

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

 Street, E.C.4, 1921. (Pp. xix + 466, with 248 illustrations.) Price 

 28s. net. 



Copper Refining. By Lawrence Addicks, Consulting Engineer, New York 

 City. New York : McGraw-Hill Book Company, 370 Seventh Avenue ; 

 London : 6 and 8 Bouverie Street, E.C.4, 1921. (Pp. xi + 206, with 

 illustrations.) Price 17s. net. 



Gasoline Automobiles. By James A. Moyer. New York : McGraw-Hill 

 Book Company, 370 Seventh Avenue ; London : 6 and 8 Bouverie. 

 Street, E.C.4, 1921. (Pp. vii + 261, with 212 illustrations.) Price 

 115. net. 



