Fuel value, in fasting, 86 of carbohydrate, 15 of fat, 15 of fat metabolized during fasting, 86 of food, in experiments on proteid requirement, athletes, 188 of food, in experiments on proteid requirement, professional men, 178, 180, 185 of food, in experiments on proteid requirement, soldiers, 198 of food of fruitarians, 217 of food of Japanese, 219, 221 of foods, 274 of foodstuffs, 7 of proteid, 15 of proteid metabolized during fasting, 86 requirement in the dog, experiments by Munk, 234 requirement in the dog, experiments by Rosenheim, 236 requirement in the dog, experiments by Jägerroos, 236 requirement in the dog, experiments by author, 245–255 G Gastric digestion, importance of, 30 object of, 30 products of, 26 Gastric juice, action on milk, 26 composition of, 25, 26 functions of, 25, 27 hydrochloric acid in, 25, 26 influence of diet upon flow of, 25 pepsin in, 25 psychical stimulation of, 24 Gastric secretion, 24 Gelatin, as food, 4, 5 Glässner, _see_ Caspari and Glässner Gliadin, cleavage products of, 70, 259 Glutaminic acid, 34, 67, 70, 259 Glutenin, cleavage products of, 259 Glycerin, 36 Glycocoll, 67 Glycogen, formation from proteid, 130 in liver, 46 relation to sugar of blood, 46 Growth, influence of diet on, in rats, 239 Guanase, 71 Guanin, 72 H Habit, in dietetics, 159 Heat, furnished by fats and carbohydrates, 58 production during sleep, 104, 105 production in work, 110 Herbivora, bacterial flora in intestine of, 292 Herter, C. A., on bacterial flora, 292 Hirschfeld, Felix, on minimum proteid requirement, 170 Histidin, 34, 68, 70 Hofmeister, Franz, on sugar assimilation, 47 Hunt, Reid, on low proteid diet and body resistance, 226 Hunter, Andrew, _see_ Watson and Hunter Hydrochloric acid, in gastric juice, 25, 26 Hydrolysis, of fats, 36 Hypoxanthin, 72 I Indol, 37 Inorganic salts, and renal activity, 298, 300 in foodstuffs, 7 in nutrition, 2 relation to diet, 299, 300 Intemperance in diet, effects of, 270 Intermediary metabolism, _see_ Exogenous metabolism Intestine, absorption in, 37 chemical changes in, 33 putrefaction in, 37 bacterial flora of, 292 Invertase, 40 J Jägerroos, B. H., on proteid requirement in the dog, 236 Japanese Army and Navy, rations of, 224 Japanese, dietary of, 225 fuel value of food of, 219, 221 proteid consumption by, 219, 221 K Katabolism, 50 nature of proteid, 75 oxygen in, 62 relation to intracellular enzymes, 75 Klemperer, on proteid requirement, 171 L Lactase, 40 Lavoisier, views on oxidation, 56 Leucin, 34, 67, 70, 259 Leucosin, cleavage products of, 259 Levulose, assimilation limits of, 47 Lewin, _see_ Bergell and Lewin Liebig, views on oxidation, 57, 120 Lipase, 32