BACTERIOLOGICAL STUDIES OF MILK SUPPLIES 1 79 



In conclusion, we believe this second series has substantiated in the 

 main the conclusions arrived at earlier by one of us. We would 

 modify an opinion introduced in the First Preliminary Report (p. 163). 

 A standard of not more than 100,000 germs per cubic centimeter 

 from April i to October i, and not more than 75,000 germs per cubic 

 centimeter from October i to April i was suggested. We now believe 

 that a winter standard of not more than 50,000 would not be 

 unreasonable. 



Further studies on this subject are now being made to determine 

 some adequate standard and means of control of the milk supply in a 

 small town such as Boulder. 



