48 Report of the Department of Bacteriology of tttf 



The conditions were again determined by an inspection of the 

 dairies by one of us (B) during the last quarter of 1912, and all of 

 the dairies were again visited during January and February of 1913. 

 In each case the facts as they existed were noted at the time of the 

 visit and the reduction of this to a numerical score was supervised 

 by the other author (H). Using the same standard of cuts and 



SEPT- ISO? 



MARCH 1911 



JAN 1913 



- - EXCEUENT- 



u« 



8?A* 



Fig. 1. — Change in Sanitary Quality of City Milk Supply. 



making the scorings in all particulars as comparable as possible 

 with the scoring made in March, 1911, when the results were 12.8 

 per ct. " excellent " and 87.2 per ct. " good," the inspections made 

 in January and February, 1913, gave 18 per ct. " good " and 82 

 per ct. " medium." 



The magnitude of this change in conditions is shown graphically 

 in Fig. 1. 



