530 SCIENCE PROGRESS 



Radium, X-rays, and the Living Cell. With Physical Introduction. By Hector 

 A. Colwell, M.B. (Lond.), D.P.H. (Oxon.), late Assistant in the Cancer 

 Research Laboratories, Middlesex Hospital, and Sidney Russ, D.Sc. (Lond.), 

 Physicist to the Middlesex Hospital. With 2 Plates and 61 Figures. London: 

 G. Bell & Sons, 191 5. (Pp. x + 324.) Price 12 s. 6d. net. 



Monographs on Physics. Edited by Sir J. J. Thomson, O.M., F.R.S., Cavendish 

 Professor of Experimental Physics, Cambridge, and Frank Horton, Sc.D., 

 Professor of Physics in the University of London. London : Longmans, 

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

 Madras, 191 5. Relativity and the Electron Theory. By E. Cunningham, 

 M.A., Fellow and Lecturer of St. John's College, Cambridge. With Diagrams. 

 (Pp. v + 96.) Price 4s. net. 



An Introduction to the Mechanics of Fluids. By Edwin H. Barton, D.Sc, 

 F.R.S.E., A.M.I.E.E., F.P.S.L., Professor of Experimental Physics, Univer- 

 sity College, Nottingham. With Diagrams and Examples. London : Long- 

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

 and Madras, 191 5. (Pp. xiv + 249.) Price 6s. net. 



The Mathematical Analysis of Electrical and Optical Wave-Motion. On the 

 Basis of Maxwell's Equations. By H. Bateman, M.A., Ph.D., late Fellow of 

 Trinity College, Cambridge, Johnston Research Scholar, Johns Hopkins 

 University, Baltimore. Cambridge : at the University Press, 1915. (Pp. vi -f 

 159.) Price 7s. 6d. net. 



Qualitative and Volumetric Analysis. By W. M. Hooton, M.A. (Oxon.), M.Sc, 

 F.I.C., Chief Chemistry Master at Repton School. London : Edward Arnold, 

 191 5. (Pp. 86.) Price y. net. 



The Molecular Volumes of Liquid Chemical Compounds from the Point of View 

 of Kopp. By Gervaise le Bas, B.Sc. (Lond.). With Diagrams. London : 

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

 Calcutta, and Madras, 191 5. (Pp. xii + 275.) Price 7s. 6d. net. 



Manuals of Chemical Technology. Edited by Geoffrey Martin, Ph.D., D.Sc, 

 B.Sc. London : Crosby Lockwood & Son, 7, Stationers' Hall Court, Ludgate 

 Hill, E.C., and 5, Broadway, Westminster, S.W., 191 5. 



2. The Rare Earth Industry, Including the Manufacture of Incandescent 



Mantles, Pyrophoric Alloys, and Electrical Glow Lamps. By Sydney J. 

 Johnstone, B.Sc. (Lond.), Senior Assistant, Scientific and Technical Depart- 

 ment, Imperial Institute, London. Together with a Chapter on the Industry 

 of Radioactive Substances by Alexander S. Russell, M.A., D.Sc, late Car- 

 negie Research Fellow and 185 1 Exhibition Scholar of the University of 

 Glasgow. Illustrated. (Pp. xii + 136.) Price 7s. 6d. net. 



3. Industrial Nitrogen Compounds and Explosives. A Practical Treatise on 



the Manufacture, Properties, and Industrial Uses of Nitric Acid, Nitrates, 

 Ammonia, Ammonium Salts, Cyanides, Cyanamide, etc. Including the 

 Most Recent Modern Explosives. By Geoffrey Martin, Ph.D., D.Sc, B.Sc, 

 F.C.S., Industrial Chemist and Chemical Patent Expert, and William 

 Barbour, M.A., B.Sc, F.I.C., F.C.S., Explosive Chemist. Illustrated. 

 (Pp. xviii + 125.) Price 7s. 6d. net. 



4. Chlorine and Chlorine Products : Including the Manufacture of Bleaching 



Powder, Hypochlorites, Chlorates, etc. With Sections on Bromine, Iodine, 

 and Hydrofluoric Acid. By Geoffrey Martin, Ph.D., D.Sc, F.C.S., In- 

 dustrial Chemist and Chemical Patent Expert. Together with a Chapter 

 on Recent Oxidising Agents by G. S. Clough, B.Sc. Illustrated. (Pp. viii + 

 100.) Price 7s. 6d. net. 



Text-Books of Physical Chemistry. Edited by Sir William Ramsay, K.C.B., 

 F.R.S. London : Longmans, Green & Co., 39, Paternoster Row, and New 

 York, Bombay, Calcutta, and Madras, 191 5. The Theory of Valency. By 



