BOOKS RECEIVED 



(Publishers are reqtiested to notify prices) 



De Wijsbegeerte der Wiskunde van Theistisch Standpunt. By D. H. Th. 

 Vollenhoven. Amsterdam : Wed. G. van Soest, 1918. (Pp. xv + 444.) 



Mathematical Tables and Formulae. By P. Abbott, B.A., Head of the 

 Mathematical Department, The Polytechnic, Regent Street, W. London 

 Longmans, Green & Co., 39, Paternoster Row, and New York, Bombay, 

 Calcutta, and Madras, 191 8. (Pp. iv + 58.) Price is. net. 



Numerical Trigonometry. By P. Abbott, B.A., Head of the Mathematical 

 Department, the Polytechnic, Regent Street, W. London : Longmans, 

 Green & Co., 39, Paternoster Row, and New York, Bombay, Calcutta, and 

 Madras, 1918. (Pp. x + 33, with diagrams.) Price 5.?. net. 



Projective Geometry. By Oswald Veblen, Professor of Mathematics, Princeton 

 University, and John Wesley Young, Professor of Mathematics, Dartmouth 

 College. Volume II, by Oswald Veblen. London: Ginn & Company, and 

 Boston, New York, and Chicago. (Pp. xii + 511.) Price 21s. net. 



Elements of the Electromagnetic Theory of Light. By Ludwik Silberstein, Ph.D., 

 Lecturer in Natural Philosophy at the University of Rome. London : 

 Longmans, Green & Co., 39, Paternoster Row, and New York, Bombay, 

 Calcutta, and Madras, 1918. (Pp. vii + 48.) Price 3.?. 6d- net. 



An account, in vectorial notation, of the fundamental part of Maxwell's 

 theory, translated from the author's Polish treatise on Electricity and 

 Magnetism. The treatment, which is extremely compact, includes a dis- 

 cussion of the propagation of light in crystalline media, while, in addition, 

 eleven pages are devoted to an admirable discussion of the difficulties (due 

 to the longitudinal waves and boundary conditions) which have confronted 

 the "elastic'' theory, and to the attempts which have been made to overcome 

 them. 



Simplified Method of Tracing Rays through any Optical System of Lenses, 

 Prisms, and Mirrors. By Ludwik Silberstein, Ph.D., Lecturer in Natural 

 Philosophy at the University of Rome. London : Longmans, Green & Co., 

 39, Paternoster Row, and New York, Bombay, Calcutta, and Madras, 1918. 

 (Pp. ix + 37, with diagrams.) Price 5s. net. 



The Teaching of Physics in Schools. The Physical Society of London. London : 

 Fleetway Press, Ltd., 1, 2, and 3, Salisbury Court, Fleet Street, 1918. 

 (Pp. 43.) Price is. net. 



New Reduction Methods in Volumetric Analysis. A Monograph. By Edmund 

 Knecht, Ph.D., M.Sc, Tech.F.I.C, Professor of Technological Chemistry, 

 Victoria University of Manchester, and Head of the Chemical Department, 

 Municipal College of Technology, Manchester, and Eva Hibbert, M.Sc, Tech. 

 Assistant Lecturer in Applied Chemistry, Faculty of Technology, Victoria 



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