318 



MILK AND MILK PKODUCTS. 



XIV. 



Average composition of milk 



Vieth* gives the following averages : 



Breeds. 



Dairy shorthorn 



Pedigree ,, 



Jersey 



Kerry 



Red polled . . . 



Sussex 



Montgomery 



Welsh 



Another important point in which the milks of cows of 

 different breeds differ is in the average size of the fat globules. 

 In any one sample of milk the globules are very varied in size, 

 but their average dimensions can be estimated. At the New 

 York Experiment Station in 1891 a large number of measure- 

 ments of the size of globules of fat in the milk of cows of 

 various breeds was made ; the results are briefly summarised 

 in the following table : 



Quoted by Richmond, Dairy Chemistry, p. 125. 



