Proteins, 17 alcohol-soluble, 21 calories in, 38 classification of, 19 composition of, 18 conjugated, 21 construction of, 19 effect of heat upon, 22, enzymes acting upon, 171 excess of in infant's and children's food, 234 fate of, 183 function of in body, 23 metabolism, 183 in nephritis, 343 rate of digestion of, 173 requirements in body, 50 sources of, 4 tolerance of in diabetes, 381 Proudfit's menu for obesity, 429 reducing diet for obesity, 433, 434 Prune fig whip, preparation of, 139 Prunes, ash constituents of, 476 composition of, 492 food content of, 481 fuel value of, 469, 492 nutrient value of, 469 standard portion of, 481 Prunes and figs, preparation of, 143 Prune whip, preparation of, 139 Ptomaines, 66 poisoning by, 451 dietetic treatment for, 451, 452 Ptyalin, 171 Pumpkins, ash constituents of, 476 fuel value of, 469 nutrient value of, 469 Punch, milk, preparation of, 88 Purin bases, 184 content of food, 421 Purin-free diet, 63 in gout, 419 Purins, enzymes acting upon, 171 Quail, composition of, 492 fuel value of, 492 Radishes, ash constituents of, 476 food content of, 481 fuel value of, 469 nutrient value of, 469 standard portion of, 481 Raisins, ash constituents of, 476 composition of, 492 fuel value of, 469, 476 nutrient value of, 469 vitamines in, 497 Raspberries, ash constituents of, 476 composition of, 492 fuel value of, 470, 492 nutrient value of, 470 Rectal feeding, 60, 61, 315 Respiratory tract, diseases of, 301 Requirements, basal, 42 Rhubarb, ash constituents of, 476 composition of, 492 food content of, 481 fuel value of, 470, 492 nutrient value of, 470 standard portion of, 481 Rice, ash constituents of, 476 composition of, 492 food content of, 481 fuel value of, 470, 492 nutrient value of, 470 preparation of, 104 standard portion of, 481 vitamines in, 496 Rice custard, preparation of, 108 Rickets, 241 calcium retention in, 241 dietetic treatment of, 241 Roast chicken, preparation of, 122 Roast duck, preparation of, 122 Roast turkey, preparation of, 122 Roasting, 71 Romaine, ash constituents of, 476 Rose's reducing diet for obese women, 431, 432 Rum, composition of, 492 fuel value of, 492 Rutabaga, ash constituents of, 476 vitamines in, 496 Rye, and _see_ Bread, and Flour ash constituents of, 476 vitamines in, 497 Saccharine, test for, 69 Salad, egg, preparation of, 154 Salads, fruit, preparation of, 131 vegetable, preparation of, 131 Saline solution, normal, 146 Saliva, 172 Salivary digestion, 172 Salisbury steak, preparation of, 149 Salmon, and _see_ Fish composition of, 492 fuel value of, 470, 492 nutrient value of, 470