PHYSICAL REVIEW 



A JOURNAL OF EXPERIMENTAL AND 

 THEORETICAL PHYSICS 



American Physical Society 



Eighteenth Volume Begins JANUARY 1904 



SAMPLE COPY UPON REQUEST 



THE MacMILLAN COMPANY, 



Recent Scientific Publications 



HiGGiNs' Lessons in Physics. 



Conn's Bacteria, Yeasts, and Molds in the Home. 

 Young's Manual of Astronomy. 

 Bergen's Botany Note-book. 



Bergen's Elements of Botany. Revised Edition now ready. 

 Meier's Herbarium and Plant Description. 



McGregory's Manual of Quantitative Chemical Analysis. 

 Millikan's Mechanics, Molecular Physics, and Heat. 

 Miller's Laboratory Physics. 



GINN & COMPANY. 



