2 go 



Index 



Sensitiveness, 264. 



Sex, recognition of, 21; designation 



of, 3, 102; peculiarities, 199, 221, 



261, 264, 274. 



Shellac to coat cards, ici, 149. 

 Shrews, dancing, 10. 

 Sight, role of, 178. See Vision, 



Brightness Vision, and Color Vision. 

 Smell, sense of, 31, 101; in labyrinth 



habits, 189, 196. 

 Sniffing by dancer, 31. 

 Solutions as ray niters, 154, 155. 

 Sorex vulgaris L., 10. 

 Sound, reactions to, 79. 

 Space perception, 63, 67, 71. 

 Spectroscope, 155. 

 Spectrum, stimulating value of, 139, 



146, 165, 169, 175. 

 Standard, candle, 121; light, 120, 



126; labyrinth, 224. 

 Stine, W. M., photometrical measure- 

 ments, 121. 

 Strength of dancer, 3. 

 Structure, 52-72; of brain, 69, 71; 



of ear, 52-72; of eye, 177. 

 Swinhoe, mice in China, 7. 



TEMPERAMENT of animal, 228. 



Temperature sense, 20, 80. 



Tests, visual, 91-198; number of, 

 per day, 148, 249. 



Threshold of discrimination, 116, 123. 



Time records, 204, 216. 



Touch, 178; and labyrinth habits, 

 190, 194, 195. 



Training, conditions of, 107 ; Weber's 

 law, 118, 126; methods of, 199; 

 and retraining, 256; in labyrinths, 

 210; efficiency of, 239; two-test, 

 240; ten-test, 243; twenty- test, 



244; continuous, 245; relation to 

 methods, 261; spread of, 262. 

 Transmitted light, 112. 



VARIABILITY of dancer, n, 48, 49, 

 277. 



Variable light, 120. 



Varieties of dancer, 49, 89. 



Violet-red tests, 148. 



Vision, 42, 47, 48, 91; brightness 

 vision, 91-132; color vision, 133- 

 177; training of, 126; importance 

 of, 178; conclusions concerning 

 198. 



Visual dizziness, 45. 



Voice of dancer, 75, 76. 



WATSON, J. B., habit formation, 198. 



Waugh, K., color-vision apparatus, 

 135; retina of mouse, 177. 



Wax, plugs of, in ear of mouse, 68, 74. 



Weber's law, tests of, 1 13 ; apparatus, 

 118. 



Weldon, W. F. R., breeding experi- 

 ments, xxi. 



Whirling of dancer, 32, 34. 



YELLOW-RED tests, 139. 



Young dancers, killing of, by male, 

 20; description of, 22; develop- 

 ment of, 24; hearing of, 85; in- 

 telligence of, 274; size of, 23. 



ZOTH, O., origin of dancer, 14; size 

 of young mice, 23; the senses of 

 dancer, 31; behavior, 32; dancing, 

 39; equilibration, 41; climbing 

 dancers, 43, 49; individual dif- 

 ferences, 69; tests of hearing, 77; 

 vision, 91. 



