Intestinal tract, diseases of, [263]
Intestines, behavior of foods in, [168]
movements of, [168], [169]
muscular contractions in, [169]
Inunction, feeding by, [62]
Invertase, [171]
Iodine, source of in food, [6]
Irish moss pudding, preparation of, [160]
Iron, [28]
sources of in food, [5]
Jam, ash constituents of, [474]