EXPERIMENT STATION REPORTS. 



193 



The milk arriving at the Milk Plant No. 3 scored as follows: 



Average 



The average score of milk arriving at the city Milk Plant No. 5 is satis- 

 factory. The three samples with scores under 70 indicates a fault at some 

 stage in handling at the farm. This milk arrived at the plant well cooled. 



The milk arriving at Milk Plant No. 3 reached the plant with an average 

 pH score of 53. There is a great opportunity for improvement here. The 

 score of the milk which this plant was distributing was 55, which would indi- 

 cate that the dealer was doing very well with the milk after he received it. 



The milk as delivered to the consumer in Ypsilanti by the various dealers 

 had a pH score as tabulated in Table No. II. 



TABLE NO. II. 



The average pH score of 67 of milk as delivered in the city of Ypsilanti is 

 hardly satisfactory, the majority of the samples having a score which indi- 

 cates that the milk has been carelessly handled. The dealers delivering milk 

 in the city do not use ice upon the bottles during deliverv. Their excuse is 

 that the milk is delivered during the night (from 3:00 A. M. to 8:00 A. M. in 

 most cases) and that ice is therefore not needed. A number of the dealers 

 drive several miles to town to deliver small amounts of milk. The smallest 

 amount delivered was 12 quarts and the largest 1,900 cjuarts of pasteurized 

 milk. 



The unsatisfactory score of pasteurized milk sold by Dealer No. 5 suggested 

 a progress pH* score at the different stages in the pasteurizing process in 

 hopes of locating the trouble. This is shown as Table III. 



Note—* A bulletin is being prepared at the Michigan Agricultural College showing how this is 

 made. 



