Index 



289 



Orange-blue tests, 138. 



Orientation of dancer, 47, 49, 62. 



Origin of dancer, i, 5, 8-15; by 

 selectional breeding, 8, 12; by 

 inheritance of an acquired char- 

 acter, 9, 68; by mutation, 9; by 

 pathological changes, 1 1 ; by natu- 

 ral selection, 12. 



PANSE, R., structure of ear, 55-59, 

 63 ; explanation of deafness, 67, 73. 



Papers, Nendel's grays, 114; Brad- 

 ley's colored, 133, 140; Hering's 

 colored, 139. 



Parker, G. H., structure of retina, 177. 



Path in labyrinth, record of, 219, 220. 



Pathological condition of dancer, u, 

 277. 



Pedagogy, comparative, 239. 



Perception, of brightness, 91-132; of 

 color, 133-177; of movement, 1 79 ; 

 of form, 179, 182. 



Peru, dancers in, 8. 



Petromyzon, semicircular canals of, 



63- 

 Photometer, Lummer-Brodhun, 121, 



I5 ?' 

 Plasticity, of dancer, 272; curves of, 



273- 

 Position, choice by, 101, 109, 229; 



of cardboards, in. 

 Preference for brightness, 105, 232, 



257; tests of, 104, 105. 

 Preliminary tests, 215, 229. 

 Probable error, 237. 

 Problems, of structure, 72; of 



method, 200, 226. 

 Punishment versus reward, 98, 99, 



188. 

 Putting-through, training by, 201. 



QUALITATIVE methods, 226, 227. 

 Quantitative methods, 226, 227, 238. 



RABBIT, ear of, 54, 55. 

 Rawitz, B., behavior of dancer, 30, 

 31; structure of ear, 53-58, 66, 67, 



68, 69; deafness of dancer, 73; 



hearing in young, 78, 84. 

 Ray niters, 152. 



Reactions, to sounds, 73-90; to dis- 

 agreeable stimuli, 100 ; valueless, 



1 06, 205. 



Reasoning, implicit, 131, 234. 

 Reconstruction method, 53, 58. 

 Records, of markings of dancers, 3, 



4; of time, 216, 217; of errors, 217; 



of path, 220. 

 Red, stimulating value of, 146, 165, 



169, 175; vision, 139, 145, 148, 



163, 173- 

 Reference numbers to literature, i. 



See Literature on Dancer, xix. 

 Reflected light, 112. 

 Refrangibility and vision of dancer, 



165. 



Regular labyrinth, 222. 

 Re-learning, relation to learning, 251; 



curves of, 257. 



Reliability of averages, 236, 237. 

 Repetition of useless acts, 106, 205. 

 Rest-interval, definition of, 252. 

 Restlessness, of dancer, 30, 31, 77; 



cause of, 31. 

 Retina of dancer, 177. 

 Retzius, ear of rabbit, 54. 

 Reward, for performance of act, 98; 



versus punishment, 99, 137. 

 Right whirlers, 34, 37; behavior in 



labyrinth, 220; occurrence of, 279; 



inheritance of tendency, 279. 

 Rods of retina, 177. 

 Rotational dizziness, 47. 

 Rubber stamps of labyrinths, 219, 220. 



SAINT-LOUP, R., origin of dancer, 9, 



10, 14. 

 Schlumberger, C., origin of dancer, 



12; wood carving with dancers, 12. 

 Selenka, ear of rabbit, 54. 

 Semicircular canals, 5372. 

 Sense organs, 23, 26, 27. 

 Senses, and habit formation, 196, 



226; differences in, 265. 



