Feeding, by inunction, 62 by mouth, 59 correct, evidences of, 243 forced, 59 in diseases of gastro-intestinal tract, 245 infant, _see_ Infant feeding methods of, 59 post-operative, 316, 319, 320 pre-operative, 312, 318, 320 rectal, 60, 61 Fehling's solution, 331 Fehling's test for sugar in urine, 328 Fermentation, and _see_ Enzymes cause of infantile disorders, 236, 237 in stomach, 180 Fermentation test for sugar in urine, 330 Fever, or Fevers, 281 care of mouth in, 285 convalescent diet in, 283 dietetic treatment in, 281 energy expenditure in, 288 energy requirements in, 285 fluid diet in, 282 nitrogen equilibrium in, 286 sample menus for, 284 schedule of feeding in, 282 soft diet in, 283 thirst in, 285 tissue waste in, 281 typhoid, _see_ Typhoid fever Figs, ash constituents of, 473 composition of, 488 food content of, 479 fuel value of, 465, 488 nutrient value of, 465 standard portion of, 479 Fish, 115 ash constituents of, 473 composition of, 488 food content of, 479 fuel value of, 488 standard portion of, 479 Fish roe, vitamines in, 496 Fish steaks stuffed with oysters, preparation of, 125 Flaxseed, ash constituents of, 474 vitamines in, 497 Floating island, preparation of, 103 Flounder, fuel value of, 465 nutrient value of, 465 Flour, ash constituents of, 474 composition of, 488 food content of, 479 fuel value of, 465, 488 nutrient value of, 465 standard portion of, 479 Flours, diabetic, 403 Fluid diet, 62 in fevers, 282 Foamy omelet, preparation of, 100 Foamy sauce, preparation of, 111, 112 Food, or Foods, 1, and _see_ Foodstuffs acid-forming, 184, 454 adulteration of, 67 allowance for children, 48 arrangement of, in stomach, 167 as fuel, 24, 36, 39 ash constituents of, 472, 473, 474, 475, 476, 477 base-forming, 184, 454 care of, 76 chemical composition of, 3, and 484 to 495 contamination of, 66 defined, 2 diabetic, 403 effect of cold upon, 39 effect of heat upon, 39 fuel value of, 36, 39, 221, 461 to 471, and 484 to 495 functions of, 2 idiosyncrasies to, 452 incomplete, as source of danger, 227 intake of, compared with output of energy, 425 materials, 2 mineral matter in, 25 nutrient value of, 461 to 471 passage of, from stomach, 168 preparation of, 69, 70 purin content of, 421 relation of, to mother's milk, 203 requirements of body, 42, 43, 51, 52 factors influencing, 43, 44 salt content of, 358, 359, 360 selection of, 52, 75 sources of, 2, 3, 4 transformation of into fuel, 37 uses of, 2, 425 vitamines in, 496, 497, 498 which produce fat, 448 Food materials, 2 Food poisoning, 66, 451 Foodstuffs, heat produced by oxidation of, 38 Forced feeding, 59