Jan. io, 1916 
Mature Beef and Immature Veal 
707 
Weights of the animats. —The animals were weighed twice every 
week. The rapid growth of the younger animals and the fattening of the 
older ones are indicated in figures 5 and 6. The reason for the decline in 
weight of cats 1, 2, 3, and 4 in the spring and summer of 1914 can not be 
stated with certainty. The fact that cats 5, 6, 8, and 9, all young, 
gained weight rapidly on the same diet that the other cats were receiving 
when they were declining in weight indicated that the loss in weight was 
not due to the diet but rather to a seasonal variation which affected the 
weights of the older animals. Cats 1 and 2 were chloroformed at the end 
of the experiment (September 10, 1914) and autopsies performed by Dr. 
/ 3/4 
H. J. Washburn, of this division. The animals were found to be in excel¬ 
lent condition, with liberal deposits of fat in both. Apparently the loss 
in weight in these two animals was due to loss of stored fat. The same 
was probably true of cat 3, which had the appearance of being unusually 
fat at the time of its maximum weight. 
Criteria of dietary sufficiency. —The excreta of the animals were 
not collected, nor was any chemical work done directly in connection 
with the feeding experiments. The ability of the animals to utilize the 
immature veal for the building of their tissues and for the reproduction 
and nursing of healthy young animals was regarded as a certain indi¬ 
cation that the immature veal contained all the amino acids essential to 
