NEWCATALOGofMICROTOMES 



H^^^L Containing full descriptions 



IHN|H|_..^^^ and Photographic Illustrations 



|PS I Pj^f^p|==^ of our entire line of remodeled 



^ microtomes and accessories, 



^^i^ f^^ : I including several 



' ' NEW MICROTOMES 



This new series is the most 

 complete and practical ever 

 listed, and every user of a 

 Microtome should have a 

 i copy of the book for refer- 

 "^^-^ ence purposes, if for no 

 other reason. Mailed free. 



Bausch & Lomb Optical Co. 



i 



ROCHESTER. 



THE 



PHYSICAL REVIEW 



A JOURNAL OF EXPERIMENTAL AND 

 THEORETICAL PHYSICS 



American Physical Society 



Eighteenth Volume Begins JANUARY 1904 



PUBLISHED MONTHLY ANNUAL SUBSCRIPTION $5. 



SAMPLE COPY UPON REQUEST 



THE MacMILLAN COMPANY, 



