THE WAGNEB GLASS WORKS 8 



of NEW YOBK CITY 



are a most reliable firm where to obtain accurate 

 Glassware. They have made numerous inventions 

 and improvements on Apparatus and Instruments 

 for testing Milk and its products. Amongst their 



latest inventions may be , 



mentioned a Test Bottle 

 with INDELIBLE GRADU- 

 ATION. The graduation 

 does not require any re- 

 blackening; it will always 

 remain jet black no mat- 

 ter what acids or chem- 

 icals are used for cleaning 

 the test bottles after a 

 test has been made. This 

 last improvement fills a 

 long-felt want. 



The Wagner 

 Glass Works 



New York 



ooooooooooocco: 



