Jan. io, 1916 
Mature Beef and Immature Veal 
705 
through spilling when portions were transferred from the container to the 
smaller feed pans in the cages. Generally enough food was prepared 
to last from five to seven days. The ice-box compartment in which the 
food was kept was also used for the purpose of storing dead guinea pigs, 
rats, etc., for various biological purposes. Although it was desired to 
feed the animals with clean food, no unusual precautions were taken. 
The cover of the can containing the food was seldom tightly in place, and 
undoubtedly the food was exposed to some extent to bacterial contami¬ 
nation. The conditions under which the meat was kept in cold storage 
and then boiled were probably better than the conditions in many so- 
called sanitary kitchens. But the conditions under Which the boiled 
food was stored in the ice box were certainly such as exist in no well-kept 
kitchen ice bos;. This was purposely done, in order that the diet actually 
fed should conform, as nearly as possible, to the poorest rather than the 
best ice-box conditions for food. 
Animals and environment. —The animals used in the experiments 
were ordinary cats, selected at random and brought to the animal room. 
Some were very young at the beginning of the feeding; others quite old. 
Their weights are given in Table XIII. After having lived on the imma¬ 
ture veal diet for about six months cat 2 was crossed by cat 1, and in 
due time cat 2 gave birth to a litter of four kittens, given in Table XIII 
and in figure 6 as cats 5, 6 , 7, and 8. One of the kittens (cat 7) died 
in a few days; the others were nursed by their mother until they could 
eat the immature veal. It is obvious that since both parents of these 
kittens had lived and grown on the immature-veal diet for 8 and 10 
months, respectively, the birth of these kittens and their subsequent 
vigorous growth indicated that the diet was entirely satisfactory. There 
were no indications that toxic bodies were present in the diet or that 
any of the amino acids essential to normal growth were absent. 
Table; XIII ,—Description of cats used in feeding experiments 
Weights. 
Period 
Final disposition of ani¬ 
mal. * 
No. 
Description. 
Initial. 
Maxi¬ 
mal. 
Final. 
of feed¬ 
ing. 
I 
White male kitten. 
Gm. 
695 
Gm. 
4, 080 
Gm. 
3,220 
Days. 
473 
Chloroformed; au¬ 
2 
Black female kitten. 
837 
4,040 
2, 620 
408 
topsy performed. 
Do. 
3 
bellow male, old. 
3.605 
4, 94o 
4,070 
216 
Set free. 
4 
Black male, old.•._ 
3,35° 
3,960 
50 
Returned to owner. 
5 
6 
7 
8 
9 
White male a .. 
White female ®. 
Black female o. 
Black male d. 
Yellow female kitten. 
& 105 
& no 
*9$ 
0 105 
58b 
3.089 
2,370 
IOO 
2, 790 
2, 280 
175 
175 
J 75 
114 
Living in a home. 
Do. 
Died; marasmus. 
Set free. 
Do. 
° Litter produced by cats i and a. 6 At birth. 
17209°—16- i 
