PHYSICAL REVIEW 



A JOURNAL OF EXPERIMENTAL AND 

 THEORETICAL PHYSICS 



American Physical Society 



Eighteenth Volume Begins JANUARY 1904 



ITHLY ANNUAL SUBSCRIPTION $5 ( 



SAMPLE COPY UPON REQUEST 



THE MacMILLAN COMPANY, 



Recent Scientific Publications 



HiGGiNs' Lessons in Physics. 

 Conn's Bacteria, Yeasts, and Mold 

 Young's Manual of Astronomy. 



