Compensation, in colors, 30 in tastes, 31 Contrast, experience of, 34 laws of, 37 Crustacea, sense organs of, 134 Crystalloids, 5, 94, 110 _Cushing_, 88 Development, of taste, 51 ff., 116 ff., 143, 184 Digestion, and taste, 160 Discrimination, of tastes, 47 sharpness of, 175 Dreams, and taste, 124, 149, 186 Drugs, effect of, 20, 150 Duration, of sensations, 175 Electric stimulation, 100 Evolution, of senses, 52 of taste, 53, 116, 128 ff., 184 Eye, as sense organ, 9, 60 stimulus for, 111 Fatigue, 48 Fishes, senses of, 136 Flat worms, sense organs of, 132 Flavors, 18, 158 ff. Foods, taste of, 16, 31 and flavors, 158 _Forel_, 135 Fusion, of colors, 2 of tastes, 9, 18 Ganglion, nature of, 85 Gasserian, 86 Gastric juice, 161 ff. _Gley_, 111 _Graham_, 94, 110 _Guezer_, 53 Gymnema, 21 _Haller_, 8 Hallucinations, of taste, 124, 149, 151 Heat, sensation of, 2 _Hering_, 113 _Herrick_, 137 _Hornborg_, 163 _Humboldt_, 101 Imagination, and taste, 144 ff., 185 Individual differences, 46, 122 ff. Inertia, of sense organ, 55 Insects, senses of, 135 _Kiesow_, 23, 30, 40, 41, 56, 75, 95, 99, 122 Kinæsthesis, 9, 10, 19, 34 _Kroner_, 53 _Kuelpe_, 41 _Kussmaul_, 53 _Ladd_, 18, 41 Lemonade, taste of, 29 _Linnæus_, 8 Magnesia, taste of, 5 Malacia, 156 Mammals, senses of, 141 Manifold, of sensations, 2 of taste, 3, 17 Meats, taste of, 16 Medusa, sense organs of, 132 Memory, and taste, 144 Mental images, nature of, 144 of taste, 146 classification of, 148 Mixture, of tastes, 28 Mode, of sensation, 7 Motive, of æsthetic products, 192 Muscles, of tongue, 66 _Myers_, 23 _Nagel_, 73, 76, 94, 97, 122, 125 Names, of tastes, 23 ff. Nerves, of taste, 80, 83 ff., 115 Neurone, nature of, 82, 85 _Nichols_, 45 _Oehrwall_, 114 Onion, taste of, 13 Organization, of taste, 27 ff., 190 Palate, sensitiveness of, 75 Papillæ, stimulation of, 10, 22 sensitiveness of, 22 location of, 68 varieties of, 70 function of, 105 development of, 117 _Parker_, 133, 138 Parorexia, 156 _Patrick_, 15 _Pavlow_, 63, 161 Perception, nature of, 29 Periodic law, 5 Perversions, of taste, 156 _Peterson_, 53 Philosophy, and art, 194 Pica, 157 Potassium, taste of, 5 Primitive peoples, 23, 126 Psychology, and classification, 6, 18 Psychophysical attributes, 174 ff. Qualities, of taste, 1 distribution of, 21 of different senses, 175 Quinine, taste of, 13, 22, 32 Race differences, 126 _Rainey_, 53 _Ramsay_, 111 Reactions, instinctive, 11 time of, 56, 175 Reptiles, senses of, 139 _Richet_, 111, 163 Saliva, flow of, 64, 93 Salivary glands, activity of, 62 function of, 103 Salt, 5, 20, 22, 31, 36, 40, 45, 57 Sapidity, conditions of, 93 ff. Schema, of color qualities, 27 of tones, 28 of tastes, 39