
VALUE OF MILK SOLIDS POOR AND RICH IN FAT. Fro 
Results and conclusions. —These experiments were made with 
young animals, in which, no doubt, the digestive fluids were not 
in full and active operation. 
To produce one pound of gain in live weenie in these young 
animals, more total solids were required with the milk rich in 
butter fat than with the milk poor in butter fat. 
Later in the trials with pigs fed rich milk ad libitum, serious 
digestive disturbances were noticed. 

Fig. 12. Fat globules in human milk. 
The failure of a pound of milk solids in rich milk to make 
equal or better gains than a pound of solids in the poor milk 
was not due apparently to lack of nitrogenous material, but 
rather to the excess of fat or to the character of the fat. 
Larger fat globules were found in the richer milk, and this 
fact, in connection with the digestive disturbances, would seem 
to indicate the reason for the larger gains from a pound of 
solids with the poorer milk. 
Fat globules in human milk are smaller than the fat globules 
in cows’ milk. If it is safe to reason by analogy from the 
brute to the human, then whole milk containing a low per cent. 
of fat would seem to be better suited for infant feeding than 
whole milk high in per cent. of fat. 


