Rabbit, ear of. Rawitz, B., behavior of dancer; structure of ear; deafness of dancer; hearing in young. Ray filters. Reactions, to sounds; to disagreeable stimuli; valueless. Reasoning, implicit. Reconstruction method. Records, of markings of dancers; of time; of errors; of path. Red, stimulating value of; vision. Reference numbers to literature. _See_ Literature on Dancer. Reflected light. Refrangibility and vision of dancer. Regular labyrinth. Re-learning, relation to learning; curves of. Reliability of averages. Repetition of useless acts. Rest-interval. Restlessness, of dancer; cause of. Retina of dancer. Retzius, ear of rabbit. Reward, for performance of act; versus punishment. Right whirlers; behavior in labyrinth; occurrence of; inheritance of tendency. Rods of retina. Rotational dizziness. Rubber stamps of labyrinths. Saint-Loup, R. Schlumberger, C.; wood carving with dancers. Selenka, ear of rabbit. Semicircular canals. Sense organs. Senses, and habit formation; differences in. Sensitiveness Sex, recognition of, designation of, peculiarities Shellac to coat cards Shrews, dancing Sight, role of, _See_ Vision, Brightness Vision, and Color Vision Smell sense of, in labyrinth habits Sniffing by dancer Solutions as ray filters _Sorex vulgaris L_ Sound, reactions to Space perception Spectroscope Spectrum, stimulating value of Standard, candle, light, labyrinth Stine, W M, photometrical measurements Strength of dancer Structure, of brain, of ear, of eye Swinhoe, mice in China Temperament of animal Temperature sense Tests, visual, number of, per day, Threshold of discrimination Time records Touch, and labyrinth habits Training conditions of, Weber's law, methods of, and retraining, in labyrinths, efficiency of, two test, ten-test, twenty-test, continuous, relation to methods, spread of Transmitted light. Variability of dancer, Variable light. Varieties of dancer Violet red tests Vision, brightness vision, color vision, training of, importance of, conclusions concerning Visual dizziness Voice of dancer Watson, J B, habit formation Waugh, K, color vision apparatus, retina of mouse Wax, plugs of, in ear of mouse Weber's law, tests of, apparatus Weldon, W F R, breeding experiments, Whirling of dancer Yellow Red tests Young dancers, killing of, by male, description of, development of, hearing of, intelligence of, size of Zoth, O, origin of dancer, size of young mice, the senses of dancer, behavior, dancing, equilibration, climbing dancers, individual differences, tests of hearing, vision