LABORATORY APPLIANCES. 



Teachers of Science : 



Your vork is too dignified and your time too 

 valuable for you to willingly and knowingly 

 use apparatus of inferior quality. We are 

 making Pittsburgh famous as a source of high 

 grade scientific materials. 



Ever had inferior goods from other firms ? 

 Ever been over charged ? Ever waited too 

 long ? A trial order placed with us immedi- 

 ately will immediately afford a comparison. 



We are located in the " City of Labora- 

 tories " and have no branch houses. 



MANUFACTURERS— IMPORTERS 



711a Penn Avenue Pittsburgh, Pa. 



Complete Catalogue Free to Laboratories. 



The Post Express Printing Company. 

 Rocbestei, N. Y. 



