SCIENCE 



New Series. 

 Vol. V. No. 106. 



Fbiday, jAirnARY 8, 1897. S;;L°."S°„S.».i.. 



Ziegler Electric Company, 



(Established 1882. Incorporated 1894.) 



Physical, Scientific 



Chemical Apparatus, 



and 



Electrical Test Instruments, 



Optical Apparatus, etc. 



EXPERIMENTAL 



WORK EXECUTED TO 



ORDER. 



SPECIAL APPARATUS 



CONSTRUCTED 



TO SPECIFICATIONS 



AND DRAWINGS. 



MICROSCOPES, 



SPECTROSCOPES , 



TELESCOPES, 



MEASURING 



INSTRUMENTS, 



X=RAY APPARATUS, 



INDUCTION COILS. 



Standard Barometers and Thermometers. 

 Apparatus imported duty free, for colleges. 



Correspondence invited. Illus. Catalogue, 240 pp. (price, $1.00), free to Teacliers of Science. 



ZIEQLER ELECTRIC COMPANY, 



LONG DISTANCE 

 TELEPHONE. 



BOSTON, MASS. 



