SCIENCE 



Nbw Series. 



VOL. XII. No. 298. 



Fkiday, September 14, 1900. 1^T..'Sk:p™. 



ANN0AL SUBSCKIPTION, $5.00 



Queen 

 instruments 



THE NEW QUEEN 



Arsonval Galvanometer 



Has the Following Points 

 Worthy of Attention 



EASE OF LEVELLING 

 HIGH INSULATION 

 SENSIBILITY 

 EXTREME SIMPLICITY 



Send for Special Circulars on Photometers, 



Portable Testing Sets, Cable Testing 



Apparatus, X-Ray Apparatus 



Queen D' Arsonval Galvanometer 



59 Fifth Avenue, New York 

 480 Monon BIdg., Chicago 



QUEEN &, CO., Inc. 



J. G. GRAY, President 



ELECTRICAL AND SCIENTIFIC INSTRUMENTS 



1010 Chestnut St., Philadelphia, Pa. 



