—— glands, the, 182; the vagus and the sympathetic nerves exciters of, 183, 198; mechanical and chemical stimulation of the cavity of the mouth has no effect on, 201; psychic excitation of, 205; sleep exercises no restraining influence upon, 206; the simultaneous excitation of the different sense organs the first and strongest impulse toward activity of, 210; psychic secretion the normal commencement of secretory activity on the part of, 214; conditions upon which depends the secretory work of, 227; mechanical stimulation of, 237, 245, 249, 271, 272, 274, 280 Gastric juice, the, appreciation necessary to stimulate flow of, 7; destroys micro-organisms, 41; its flow increased by mastication, 102, 146; secretion of, 181, 206, 208, 211, 213, 262; connection between the appetite and, 265, 266; experiments for, 267; too little, 270, 272, 273; salts of sodium promote a flow of, 277, 279, 280, 329, 334, 335, 337, 340, 341 —— mechanism, the, 385 —— movements, the, 301; early writings on subject of, 302; later experiments upon, 303, 327, 329, 338 —— mucous membrane, the, excitability of, 181, 231, 241, 249, 258, 259, 264 —— muscular fibres, the, 307 “Gastric tonics,” 255 Gastritis, inefficient mastication may produce, 138 Gastro-intestinal catarrh, 144 Gastronomic enjoyment, increased by proper mastication and insalivation, 22 Germany, food in, 267 Ginger, preserved, 141 Gladstone, William E., his theory of mastication, 92 Gland metabolism, 277 Glinski, Dr., 190, 194, 196, 197 Gluten, raw, 395 “Glutton or Epicure,” 26, 31, 92, 389, 396. _See also_ “New Glutton or Epicure, The” Goose, the, experiments upon, 288 Goose-fat, 100 Gorilla, the, 115 Gran Chaco Indians, the, 123 Grape-sugar, chemically made from cane-sugar, 21, 169 Greens, 132 Grey, Sir George, 128 Griddle-cakes, need not be hurtful, 21 Griffin, Charles & Company, 180, 181 Grützner, experiments of, 278, 346, 363, 377, 378, 381 Gscheidlen, 235 Guinea-pigs, experiments upon, 39 Gum arabic, chewing, 103 Gustatory indifference, 263 —— nerves, the, 263, 269 Gut, the, 344, 345, 355, 360, 364, 365, 374 H Hæmorrhoids, cannot exist, 43 Haller, experiments of, 304; his summary of the motor functions of the stomach, 304-305, 309 Harvard Medical School, 68 —— Physiological Laboratory, the, 284 Haste, danger of, 134-135 Headache, produced by inefficient mastication, 138 Health, the optimum, xxxi Hearing, the sense of, 210 Heart, the, stimulated by mastication, 96, 103, 281 Heartburn, 144 Heat values, 397 Heger, Dr. Prof. Paul, 67, 68 Heidenhain, 181, 182, 183, 235 Herbivora, the, practice thorough mastication, 97 Higgins, Dr. Hubert, letter from, xxvii-xxxiii, 47 Hirsch, experiments of, 305, 315