LABORATORY APPLIANCES. 



We are issuing this month a special edition of the 

 "Scientific Drummer" devoted to 



Caborafory Glassware 



IT'S FREE. ASK FOR IT. 



(bdi2/vimic rl!\aieUau) ^uficwuf 



Located in THE "CITY OF LABORATORIES." 



71lA PENN AVENUE, 

 PITTSBURGH, - - PENNSYLVANIA. 



Our new Catalogue will be ready in July. 



Th« Pact Express Printing Conipaav> 

 Rodwster, N. Y. 



