TABLE XV. 
Rats from mothers on Diet 13. 
No. P ‘ Age in weeks Total 
of Dig “Mie oe 4 5 6 7 8 9 10 11 12 gain for 
rats % preatment Average weight in grams 8 weeks 
6 94 0 ; 43 49 50 47 41 33* 
8 100 25 Unheated 39 58 79 90 93 97 99 99 98 59 
8 100 25 Heated dry 6 hrs. 39 53 75 87 93 101 103 102 106 67 
8 100 25 Heated dry 24 hrs. 39 52.64 81 90100 105 112 118 79 
8 100 25 Heated dry 48 hrs. 39 53 69 83 87 97 100 104 108 69 
* 33 gms.=average weight at death, the average age at death being 60 days. 
TABLE XVI. 
Rats from mothers on Diet 13 M. 
No. - . Age in weeks Total 
of Diet Mite Mule 4 5 6 7 8 9 10 11 12 gain for 
eatment i 
rats % ‘Treatme Average weight in grams 8 weeks 
0 ’ 52 57 59 54 49 42 35% 
100 25 Unheated 52 71 92 109 129 142 149 164 166 114 
7 100 25 Heated dry 6 hrs. 53 73 92 111 122 135 147 162 166 113 
7 100 25 Heated dry 24 hrs. 53 70 88 104 116 125 135 141 149 95 
7 100 25 Heated dry 48 hrs. 54 67 83 96 111 132 133 145 151 997 
* 3, 
9 gms.=average weight at death, the average age being 67 days. 
NNT 
Ke) 
mS 
TABLE XVII. 
(Results of Tables XV and XVI combined.) 
No. 3 i Age in weeks Total 
of Diet om Teer 4 35 6 7 8 9 10 11 12 gain for 
rats ? Bea mse Average weight in grams 8 weeks 
13 94° «OO 48 53 55 51 45 35* 
15 100 25 Unheated 45 64 85 99 110 118 123 129 130 84 
15 100 25 Heated dry 6hrs.. 45 62 83 98 106 117 124 130 134 = 88 
15 100 25 Heated dry 24 hrs. 46 60 77 92 102 112 119 125 132 87 
15. 100 25 Heated dry 48 hrs. 46 59 76 89 98 113 115 125 128 82 
* 35 gms.—average weight at death, 64 days being the average age. 
The conclusions to be drawn from these regarding the 
heat destruction of vitamin B in the dry state, confirm those 
of the previous experiment in which the heated milk was fed 
separately. The average gain in weight for eight weeks on 
a control diet containing unheated milk and on the diets con- 
taining the milk heated for 6, 24 and 48 hours is the same. 
There is evidently no destruction of the vitamin by this treat- 
ment or the amount of destruction is too small to be detected 
by either of the methods employed in the present work. 
21 
