assurance of having any advantage over the former, and the 

 former was easier of application. 



TABLE VII. 

 Diet 94 and unheated skimmed milk fed in fluid state. 



(1) 31 gms.=average weight at death. 

 55 days=average age at death. 



Feeding the Dried Milk Mixed With the Rest of the Diet. 



For the experiments in which the dried milk was mixed with 

 the rest of the diet, it was essential to determine the propor- 

 tion in which the milk should be added in order to make the 

 test for possible differences in vitamin B content, most deli- 

 cate. The starch in diet 94 was replaced by skimmed milk in 

 amounts varying from 2.5 per cent, to 30.0 per cent. The diets 

 are given in Table VIII. 



TABLE VIII. 

 Diet 94 98 97 96 95 99 100 101 



Casein 18 18 18 18 18 18 18 18 



Butter fat 10 10 10 10 10 10 10 10 



Salt mixture (O. & M.) 40 44 444444 



Skimmed milk powder.. 2.5 5 10 15 20 25 30 



Starch 68 65.5 63 58 53 48 43 38 



The rats used in these experiments came either from 

 mothers on Diet 13 or 13 M. The data for the animals from 

 the two sources have been summarized separately and are 

 given in Tables IX and X and the combined results in Table 

 XL See also Chart II, Figure I. 



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