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Differential Equations. Being Part II. of Vol. II. By Edouard Goursat, 

 Professor of Mathematics in the University of Paris. Translated by Earle 

 Raymond Hedrick, Professor of Mathematics in the University of Missouri, 

 and Otto Dunkel, Assistant Professor of Mathematics in Washington 

 University. London : Ginn & Co., and Boston, New York, Chicago, Atlanta, 

 Dallas, Columbus, and San Francisco. (Pp. viii + 300.) Price 11.& 6d. net. 



The Continuum and other Types of Serial Order. With an Introduction to 

 Cantor's Transfinite Numbers. By Edward V. Huntington, Associate Pro- 

 fessor of Mathematics in Harvard University. Second Edition. Cambridge, 

 Mass., U.S.A. : Harvard University Press, 1917. (Pp. vii 4- 82.) 



Census of the Commonwealth of Australia. Appendix A. Vol. I. The Mathe- 

 matical Theory of Population, of its Character and Fluctuations, and of the 

 Factors which influence them, being an Examination of the General Scheme 

 of Statistical Representation, with Deductions of Necessary Formulae ; the 

 whole being applied to data of the Australian Census of 191 1, and to the 

 elucidation of Australian Population Statistics generally. By G. H. Knibbs, 

 C.M.G., F.S.S., F.R.A.S., etc., Member of the International Institute of 

 Statistics, Honorary Member of the Societe de Statistiques of Paris, and of the 

 American Statistical Association, Commonwealth Statistician. Published 

 under Instructions from the Minister of State for Home and Territories, 

 Melbourne. By Authority ; McCarron, Bird & Co., Printers, 479, Collins 

 Street, Melbourne. C.S.— No. 312. (Pp. xvi 4- 466.) 



A Sixth List of Writings on Determinants. By Sir Thomas Muir. Extracted 

 from the Quarterly Journal of Pure and Applied Mathematics, Vol. XVII., 

 No. 188, 1917. (Pp. 344-84) 



On the Natural Occurrence in Certain Fish-Liver Oils of High Percentages of 

 Hydrocarbons. By A. Chaston Chapman, F.I.C. Reprinted from the 

 Analyst, the Journal of the Society of Public Analysts and other Analytical 

 Chemists, May 1917. (Pp. 6.) 



Introduction to the Rarer Elements. By Philip E. Browning, Ph.D., Assistant 

 Professor of Chemistry, Kent Chemical Laboratory, Yale University. 

 Fourth Edition, thoroughly revised. New York : John Wiley & Sons, Inc. ; 

 London : Chapman & Hall, 1917. (Pp. x 4 250.) Price 7s. net. 



A Class Book of Organic Chemistry. By J. B. Cohen, Ph.D., B.Sc, F.R.S., 

 Professor of Organic Chemistry in the University of Leeds. London : 

 Macmillan & Co., St. Martin's Street, 1917. (Pp. viii + 343.) Price 4s. bd. 

 net. 



The Theory and Use of Indicators. An Account of the Chemical Equilibria of 

 Acids, Alkalies and Indicators in Aqueous Solution, with Applications. By 

 E. B. R. Prideaux, M.A., D.Sc, Lecturer in Chemistry in University College, 

 Nottingham. London: Constable & Co., 1917. (Pp. vii 4 375.) Price 

 \2s. 6d. net. 



Technical Handbook of Oils, Fats, and Waxes. By Percival J. Fryer, F.C.S., 

 Soap and Glycerine Works Manager and Chief Chemist Lecturer in Oils, 

 Fats, and Waxes at the Polytechnic, Regent Street, W., Honours Silver 

 Medallist, City and Guilds of London, and Frank E. Weston, B.Sc, F.C.S., 

 Head of the Chemistry Department in the Polytechnic, Regent Street, W. 

 Vol. I., Chemical and General. Cambridge: at the University Press, 1917. 

 (Pp. x + 279, with 23 illustrations and 36 plates.) Price 9-y. net. 



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