THE 



PHYSICAL REVIEW 



A JOURNAL OF EXPERIMENTAL AND 

 THEORETICAL PHYSICS 



American Physical Society 



EDWARD L. NICHOLS 

 ERNEST MERRITT, AND FREDERICK BEDELL 



Eighteenth Volume Begins JANUARY 1 904 



PUBLISHED MONTHLY ANNUAL SUBSCRIPTION $6.00 



SAMPLE COPY UPON REQUEST 



THE MacMILLAN COMPANY. 



BOOKS ON SCIENCE 



Bergen's Foundations of Botany 



Davis* Physical Geography 



Moore's Laboratory Directions for Beginners in Bacteriology 1 .00 



Blaisdell's Practical Physiology ^-J? 



Brown's Physiology for the Laboratory '5 



Ward's Exercises in Meteorology * *2 



Davis' Elementary Meteorology 2.50 



Williams' Elements of Chemistry i'i^ 



Hastings and Beach's General Physics 2.75 



Wentworth and Hill's Physics J *^ 



Gage's Principles of Physics ^'l^ 



Stone's E.xperimental Physics J OO 



Young's General Astronomy * 



Byrd's Laboratory Manual in Astronomy 



Upton's Star Atlas 2.00 



GINN 6 COMPANY PUBLISHERS 



