SCIENCE 



.•vt^^|_«4^ iij.i-; 



KaW SSBIE8 



Vol. XL. No. 1024 



Feidat, August 14, 1914 



Single Copise, 15 Crs. 

 Annual Sub80biftii»i, 9B.00 



Blakiston's Page Of 



Physics Books 



MOLECULAR PHYSICS 



By J. A. Ceowthbr, Fellow of St. John's College, 

 Cambridge (Eng.) Illustrated. 



Cloth, $1.25 Postpaid. 

 This volume gives a connected account of the 

 constitution and properties of the atom and 

 molecule in the hght which has been thrown upon 

 these particles by recent physical research. 



CONDUCTION OF ELECTRICITY 

 THROUGH GASES AND RADIO- 

 ACTIVITY 



A Text-book with Experiments. By R. K. 



McCltjng, M.A., D.Sc, F.R.S.C., Lecturer on 

 Physcs, University of Manitoba, Winnipeg. 78 

 Illustrations. Small Octavo; xi+ 245 pages. 



Cloth, $1.50 Postpaid. 



A TEXTBOOK OF PHYSICS 



By Various Writers. Edited by A. Wilmer 

 Duff, A.M., Sc.D., Professor of Physics, Wor- 

 cester Polytechnic Institute, Worcester, Mass. 

 Third Edition, Revised. 595 Illustrations. 

 xvi+686 pages. Small Octavo. 



Cloth, $2.75 Postpaid. 



PHYSICAL CHEMISTRY 



By Arthur W. Ewell, Ph.D., Professor of 

 Physics, Worcester Polytechnic Institute, Wor- 

 cester, Mass. 102 Illustrations and 63 Tables. 

 Small Octavo, ix+370 pages. 



Cloth, $2.25 Postpaid. 



THEORY OF HEAT RADIATION 



By Max Planck, Direct. Inst. Theoret. Phys., 

 Berlin University. Translated from the Second 

 German Edition by Morton Masius, Ph.D., 

 Department of Physics, Worcester Polytechnic 

 Institute, Mass. With an Appendix, List of Orig- 

 inal Papers. Illustrated. Octavo. 



Cloth, $2.00 Postpaid. 



OUTLINES OF APPLIED OPTICS 



A work dealing with Optical Measurements from 

 the standpoint of sensibility and precision. By 

 Perlet Oilman Niftting, Ph.D., Bureau of 

 Standards, Washington, D. C. 73 Illustrations ; 

 Octavo; ix-|-234 pages. Cloth, $2.00 Postpaid. 



PHYSICAL MEASUREMENTS 



A Laboratory Manual by A. Wilmer Duff, 

 A.M., Sc.D., Professor of Physics, Worcester Poly- 

 technic Institute, and Arthur W. Ewbll, Ph.D., 

 Professor of Physics in the same Institution. Third 

 Edition. 80 Illustrations. xii-|-244 pages. 



Cloth, $1.50 Postpaid. 



THE PRINCIPLES OF PHYSICS 



By Willis E. Tower, Englewood High School, 

 Chicago; Charles H. Smith, Hyde Park High 

 School, Chicago, and Charles M. Turton, Bowen 

 High School, Chicago. 425 Illustrations. 12mo. 

 xi-l-466 pages. Cloth, $1.25 Postpaid. 



P. BLAKISTON'S SON & CO., Publishers, Philadelphia 



