BACTERIOLOGICAL STUDIES OF MILK 

 SUPPLIES OF BOULDER, COLORADO 



SECOND PRELIMINARY REPORT^ 



By Clough Txtrrill Burnett 



AND 



Charles F. Poe 



Since the presentation of a paper read by one of us in February, 

 which appears in this number of these Studies, we have been asked 

 many times to state by name those dealers in Boulder who are fur- 

 nishing wholesome milk. So far we have decHned, because we have 

 not felt warranted in making either favorable or unfavorable reports 

 on the products of any of the dairies until such time as we were pre- 

 pared to report on aU dairies operating in Boulder. We have now 

 completed a sufficient number of bacteriological examinations of 

 samples from the various dairies to permit us to give this information 

 to the pubHc.^ 



Reference will be made from time to time to certain portions of 

 the First PreHminary Report, which appears elsewhere in this journal, 

 but the charts presented here will refer only to the samples not already 

 reported. 



In this series will be found the examinations of thirty-one samples 

 of milk from fourteen dairies. In the First PreHminary Report wiU be 

 found examinations of twenty-one samples of milk from fourteen 

 dairies. This makes a total of fifty- two samples examined from 

 twenty-eight dairies. We obtained the complete list of licensed dairies 

 from the City Milk Inspector and believe we have examined at least 

 one sample from each dairy. 



The examination cited extends from September 21, 1910, to March 

 15, 191 1. The method of examination was the same as that used for 



' From the Laboratory of Bacteriology, University of Colorado. 



» In this paper we shall designate the dairies only by the Producer Number, but a key will be furnished 

 to the City Milk Inspector and to each member of the Boulder County Medical Society (the latter represent- 

 ing the practicing physicians of Boulder), indicating the dairy designated by each Producer Number. 



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