Bacon, ash constituent of, 472 composition of, 484 food content of, 478 fuel value of, 461, 484 nutrient value of, 461 standard portion of, 478 Bacteria, action of in alimentary canal, 178 types of, 180 Bacterial action, in body, 180 upon carbohydrates, 13 Bacterial activity, 181 Baked custard, preparation of, 102 Baked onion, preparation of, 151 Baked potato, preparation of, 130 Baked tapioca, preparation of, 106 Baking, 71 Bananas, ash constituent of, 472 composition of, 484 food content of, 478 fuel value of, 461, 484 nutrient value of, 461 standard portion of, 478 vitamines in, 497 Banting's method for obesity, 426, 427 Barley, ash constituent of, 472 composition of, 484 fuel value of, 461, 484 nutrient value of, 461 vitamines in, 496 Barley water, 220 preparation of, 140 Basal metabolism, 42 Basal requirements, 42 Bass, composition of, 484 fuel value of, 484 Beans, ash constituent of, 472 composition of, 484 food content of, 478 fuel value of, 461, 484 nutrient value of, 461 standard portion of, 478 vitamines in, 497 Beef, and _see_ Meats ash constituents of, 472 cuts of, 117 food content of, 473 fuel value of, 462, 463, 484 composition of, 484 methods of preparing, 117 nutrient value of, 462, 463 standard portion of, 478 vitamines in, 496 Beef broth, preparation of, 118 Beef juice, preparation of, 119, 141 Beef steak, preparation of, 123 Beer, ash constituents of, 472 Beets, ash constituent of, 472 composition of, 484 food content of, 478 fuel value of, 463, 484 nutrient value of, 463 standard portion of, 478 vitamines in, 496 Benedict's solution, 331, 332 Benedict's test for sugar in urine, 328, 329, 331, 332 Bile, 174 Biliousness, 404, 414 Birds a la bain-marie, preparation of, 121 Blackberries, ash constituent of, 472 fuel value of, 463 nutrient value of, 463 Blackfish, fuel value of, 463 nutrient value of, 463 Blood, ash constituent of, 472 vitamines in, 498 Bluefish, ash constituent of, 472 composition of, 484 fuel value of, 463, 484 nutrient value of, 463 Body, 165 chemical composition of, 165 food requirements of, 42, 50, 165 metabolism of tissues of, 187 Boas' enema, preparation of, 146 Boiled corn beef with cabbage and other vegetables, preparation of, 153 Boiling, 70 Bomb calorimeter, 36 Borax, test for, 68 Boric acid, test for, 68 Boston crackers, fuel value of, 463 nutrient value of, 463 Bowels, of nursing mother, 197 Boys, height and weight of, 500 Brains, vitamines in, 496 Bran, composition of, 484 fuel value of, 484 Bran agar wafers, preparation of, 146 Bran biscuits, preparation of, 149, 155, 156 for constipation, 156 Bran cookies, preparation of, 145