THE PHYSICAL REVIEW. 



A JOURNAL OF EXPERIMENTAL AND THEORETICAL PHYSICS. 



CONDUCTED BY 



EDWARD L. NICHOLS, 

 ERNEST MERRITT, AND FREDERICK BEDELL. 



The Physical R"eview is published bi-monthly, each annual 

 volume beginning with the July-August number. The price of 

 subscription is three dollars a year, or fifty cents a number. 

 Subscriptions and applications for advertising space should be 

 sent to the publishers, Messrs. Macmillan & Co., A^ew York 

 and London; or, to Messrs. Mayer and Mueller, Berlin. 



Subscribers who desire to have their copies of The Physical 

 Review sent to them with the edges cut, can so obtain them 

 by informing the publishers to that effect. 



Correspondence relating to contributions should be addressed 

 to the editors, at Ithaca^ Netv York. 



Manuscript intended for publication in The Physical Re- 

 view must be communicated by the author ; when publication 

 in other journals is contemplated, notice to this effect should be 

 given. 



The authors of 'original articles published in the Review will 

 receive one hundred separate copies in covers, for which no 

 charge will be made; additional copies, when ordered in advance, 

 may be obtained at cost. 



PUBLISHED FOR CORNELL UNIVERSITY. 



MACMILLAN & COMPANY, NEW YORK. 



