PHYSICAL PROPERTIES OF MILK 71 



RELATIVE SIZE OF FAT GLOBULES IN MILK OF DIFFERENT BREEDS 



This table shows the same results as noted by others, the 

 Jersey having by far the largest fat globules, while the 

 Holstein has the smallest, the Shorthorn standing between 

 the Holstein and the Jersey. The chief difference between the 

 size of the fat globules with the different breeds is that 

 with the Jersey there is a greater proportion of the larger 

 globules and that the milk of the other breeds contains a 

 limited number as large as the largest in the Jersey milk. 

 The milk of the Holstein breed is especially noticeable in con- 

 taining a large number of small fat globules, together with a 

 wide variation in size. 



The comparative size of the fat globules in the milk of these 

 four breeds is illustrated graphically in Fig. 3, where the 

 average size of the fat globules is represented by the size of 

 the circles in the upper group. 



