SCIENCE— ADVERTISEMENTS 



NEW CENCO SPECIALTIES 



Shown for the First Time at the National Chemical Exposition 



Were One of the Striking Features of the Show 



According to the Opinion of Visiting Chemists. This Photograph of 

 our Exhibit Shows the Many Specialties Which Make the Name 



De Khotinsky 

 Water Baths 



Cenco-Nelson 

 Vacuum Pumps 



Du Nouy's Surface 

 Tension Apparatus 



Wendt's Electro- 

 Titration Apparatus 



Dwight 

 C O 2 Indicator 



, Sicklen 



■i Tachometer 



Special Literature on Any of the Above Will be Sent on Request 



Central Scientific Company 



460 East Ohio Street 



CHICAGO, U. S. A. 



