Soldiers, fuel value of food in experiments on proteid requirement of, 198 nitrogen equilibrium in experiments on proteid requirement of, 200, 201 photographs of, 193 proteid requirement of, 192 sample diet in experiments on proteid requirement of, 195 strength tests in experiments on proteid requirement of, 203 Specificity of body fat, 44 Standard diets, 155 Standing at rest, oxygen consumption in, 116 Starch digestion, products of, 21, 37 Steapsin, 36 Stomach, absorption from the, 31 as a reservoir, 31 digestion in the, 25–31 fat digestion in the, 36 muscular movements of the, 27–30 salivary digestion in the, 23 time foods remain in the, 29, 30 Storing of proteid, 92, 98, 99, 100 Strength tests, on low proteid diet, athletes, 206 on low proteid diet, soldiers, 203 Sugar, in blood, 45 in blood, relation to glycogen, 46 Sugars, behavior when introduced into blood, 39 selective action in absorption of, 47 Sulphur, excretion of, relation to work, 123 Synthesis, of fat, 43 of proteid, 48, 49, 68 T Temperance in diet, 166, 168, 270 Tissue formers, 58 Tissue metabolism, _see_ Endogenous metabolism Trypsin, 32 condition in pancreatic juice, 33 Tryptophan, 67 Typhoid fever and scientific research, 267 Tyrosin, 34, 67, 70, 259 U Underfeeding, dangers of, 214 Urea, 74 excretion of, influence of diet on, 144 relation of, to creatin and creatinin, 74 Uric acid, 73 excretion of, as influenced by diet, 144 relation of, to xanthin bases, 73 Urine, relation of diet to nitrogen distribution in the, 144 Utilization, of dextrose, 40 of disaccharides, 40 of fat in dogs on low proteid diet, 261 of nitrogen in dogs on low proteid diet, 262 V Variety in diet, 229, 242 Vegetable diet, influence upon dogs, 254, 256 Vegetable foods, relation to low proteid dietary, 291 Vegetables, cellulose in, influence on digestion, 263 Voit, Carl, on minimum proteid requirement, 171 theory of proteid metabolism, 59, 134 W Walking, oxygen consumption in, 116 Water in foodstuffs, 7 Watson and Hunter, influence of diet on growth in rats, 239 Wheat kernel proteids, cleavage products of, 259 Weight, _see_ Body-weight Wislicenus, _see_ Fick and Wislicenus