assutance 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. 
OF ‘Ogms. 4 5 6 ei - a ll 12 gain Remarks 
tats day. ae Average weight in grams ate 
4 44 50 46 36 31 see (1) below 
4 0.05 39 50 51 50 46 45 47 49 59 20 
4 0.075 44 53 58 59 60 59 66 65 73 29 
4 0.10 43 53 63 70 74 80 89100 110 67 
4 0125 43 54 61 65 71 74 83 90 106 63 
(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: nese cewcai gia ae -... 94 98 97 96 95 99 100 101 
% To % To % % Yo % 
CaSEil, -peedi weiat co igade 18 18 18 18 #18 #18 #18 «+18 
Butter fat ............. 10 10 10 10 10 10 10 10 
Salt mixture (O. & M.)*? 4 4 4 4 4 4 4 4 
Skimmed milk powder... 0 2.5 5 10 15 20 25 30 
Starch s2qsacuenainude 68 65.5 63 58 53 48 43 38 
The rats used in these experiments came either from 
mothers on Diet 13 or 13M. 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 
XI. See also Chart II, Figure I. 
15 
