Nitrogen, 4, 5, 6, 10, 11 Nitrogenous foods, 9, 10, 53-60 Foodstuffs, 10-13 Nut oil, 24 Nuts, 87-88 Oats, 61 Obesity, 299 Olive oil, 24, 25 Onions, 39, 40 Orangeade, 60, 306 Oranges, 45, 46, 48 Organs and conditions affecting digestion, 151-184 Age, 165 Appetite, 160 Blood, 157 Circulation, 181 Exercise and breathing, 171 Fatigue, 174 Frequency of meals, 169 Influence of mind, 177 Intestines, 156 Kidneys, 155 Liver, 151 Lungs, 153 Muscles, 152 Nerves, 153, 154 Regularity of eating, 168 Season and climate, 164 Skin, 155 Sleep, 177 Tobacco and alcohol, 184 Ventilation, 174 Overeating, effect of, vi Oxidation, 124, 125 Oxygen, 4 Oysters, 55, 58 Pancreatic juices, 20, 34 Pancreatin, 99, 223 Parsnips, 38, 39, 41 Pastry, 194 Peaches, 47 Peanuts, 83 Pears, 48 Peas, 43, 82, 85, 86 Pectin, 45 Pepsin, 140 Peristalsis, 142 Phosphates, 11 Phosphorus, 4, 36, 59 Pineapples, 48, 52 Plums, 47 Poisoning from food, 113-118 Potassium, 4, 34, 36, 46, 51, 59 Potatoes, 39-40 Poultry, 54 Predigested foods, 78 Preservation of foods, 111-113 Prolapsus of stomach, 259 Protein, 4, 6, 9, 10, 11, 53-60 Prunes, 48 Pruritus, 295 Ptyalin, 136 Purposes of food, 1-3 Produce heat and energy Rebuild tissue Pylorus, 142 Pyorrhea, 138 Quinces, 52 Raisins, 48 Raspberries, 48 Recipes for invalids and semi-invalids, 305 Regularity of eating affecting digestion, 168 Rennin or rennet, 90, 140, 141 Repair of waste, 130-133 Rheumatism, 297 Rhubarb, 43, 44 Rice, 61, 69 Rye, 61 Saccharin, 15 Sago, 10, 20 Soup, 311 Saliva, 20 Affecting digestion, 158 Salivary digestion, 135 Salts, 6, 34-37 Calcium (lime), 34, 36 Iron, 34 Magnesium, 34 Potassium, 36 Sodium, 34, 35, 36 Sausage, 54 Season and climate, 164 Sedentary occupation, diet in, 223-224 Shrimps, 55 Skin, work of, 155, 156 Skin diseases, 292 Sleep, 177 Soap, 22 Sodium carbonate (baking soda), 136 Sodium chlorid (salt), 4, 34, 35, 36, 46, 136 Souffles, 318 Soups, 313 Spaghetti, 69 Spinach, 43 Starch, 20-21, 136 Steapsin, 144 Stomach, 158 Strawberries, 48 Sucrose, 14, 15 Sugar, 10, 14, 19 Cane sugar (sucrose), 14, 15 Fruit sugar (levulose), 14, 15 Sugar of grapes or corn (glucose), 15, 16 Sugar of malt (maltose), 15 Sugar of milk (lactose), 15, 16 Sulphates, 11 Sulphur, 4, 11, 36, 59 Syrups, 10 Sweat-baths, 2 Sweetbreads, 54 Tables of use in making up balanced diets, 232 Tannin, 49, 104 Tapioca, 10, 20 Tartaric acid, 45 Tartrates, 45 Tea, 104 Terrapin, 55 Theobromin, 108 Tired, meaning of, 131 Toasts, 318 Tobacco, 184 Tomatoes, 43, 44 Traveling, diet in, 213 Trypsin, 141 Tuberculosis, 283