MODERN DAIRYING 



the fact that unselfishness is not yet dead 

 among men. 



But Dr. Babcock, like De Laval, has not con- 

 fined his efforts to one line, though the benefit 

 derived from his other discoveries, like that of 

 the milk test, has been public, not private. He 

 has made exhaustive studies into the composi- 

 tion of milk and other substances, always hav- 

 ing in mind the practical bearing of the work. 

 He invented the viscometer, by means of which 

 the viscosity, or the amount of glutinous or 

 sticky substances in oils might be determined ; 

 devised a method of analyzing milk which has 

 been accepted as the standard by the official 

 chemists of the United States, and is largely 

 in use in Europe ; discovered a method for de- 

 termining the number and size of the fat-glob- 

 ules in milk, and a method for the mechanical 

 separation of the casein in the milk from the 

 other constituents. In connection with Dr. H. 

 L. Russell, also of the Wisconsin station, he 

 made an important discovery, finding a diges- 

 tive ferment in milk, an enzyme, resembling the 

 secretions of the pancreatic organ of animals. 

 This ferment has been given the name "galac- 

 tose." The discovery is among the most im- 



189 



