SCIENCE.— AD VER TISEMENTS. 



PHISICiL, CEMICAL, iilGRDSGDPIGIlL AND [[[GTRIGAL APPARATUS. 



Established 

 1882. 



COMPLETE LABORATORY EQUIPMENT OF OUR OWN MANUFACTURE. 

 X-RAY APPARATUS AND CROOKE'S TUBES A SPECIALTY. 



Incorporated 

 1894. 



catalogue P Free to School 

 Officials and Science Teachers. 



ZIEGLER ELECTRIC CO., "Duty Free" importations from 



141 Tranklin St.. BOSTON, MASS. Foreign Manufacturers. 



MINERALS. 



Our Stock greatly enriched by Mr, English's Recent Tour of Europe. 



Price Lists and Bulletins. 124 pp. Catalogue (87 cuts) describing every species, 25c. in paper, 60c. in clotli. 



Extra Fine Cabinet Specimens. 

 Rare Species. Loose Crystals, 

 Cheap Educational Specimens. 

 Systematic Collections. 

 Blowpipe Minerals by the Pound. 

 Write for full particulars, and for free 



GEO. li. ENGLISH &l CO.. Mineralogists. 64 E. 12tli St., New York. 



