THE COMPOSITION OF MILK 



11 



12. Milk Serum, Constancy of its Composition. — 



The solids of the milk serum are fairly constant in 

 composition. This is well illustrated in the example 



fiilK Vaster Fit Casein MiiKd^iTfillmm fl5h 



Fio. 3. — Average composition of milk. 



given of the composition of first or fore milk and 

 strippings. The solids of the milk serum, also 

 known as the solids not fat, are never less than 8.25 

 per cent and rarely more than 9.75 per cent. The 



