T 334 



INDEX OF SUBJECTS. 



PAGE 



Vestibule, . . 1164, 1201, 1204, 1205 



Viscera, nerves of. 197, 200, 201, 203, 617, 



642, 659, 686, 688 



,, referred pain from, 689, 690, 981, 

 982, 983, 994 



reflexes from, 816, 827, 848, 849 



sensitivity of, 688, 849, 970, 971, 



993, 994, 996 



shock from, . . . -848 

 Viscometer, ...... 65 



Viscosity of blood, . . .65, 66, 97 

 ., fluids, . . . 63, 65, 98 

 Vision, 1026. See also Sensation, 



visual. 

 ,, binocular. .... 1122 



'double, . . .1125 

 single, 1125, 1126, 1127 

 theory of, . 1137, 1138 

 central, . 755, 757, 759, 760, 761 

 See also Sensation, visual, 

 foveaL 



,, centre for. See Cerebral cortex. 

 ,, colour sense in. See Sensation, 



visual. 



,, double, . . 1032, 1033, 1125 

 ,, influence of mesencephalon on, . 913 

 ,, ,, thalamus on, 917, 918 



,, organs of. See Eye, Retina. 

 ,, sense of light in. See Sensation, 



visual. 



,, space perception in. See Per- 

 ception. 



Visirlinie, 1031 



Visual angle, . . 1055, 1056, 1100 

 , , area. See Cerebral cortex. 

 ,, purple. See Retina. 

 ,, sensations. See Sensations. 

 ,, substances. See Retina. 

 ,, yellow. See Retina. 

 Vitreous humour. See Eye. 



.Vocal cords, 1206 



,, abduction of, . 1209, 1210 



,, ,, action of laryngeal muscles 



on, 1209, 1210, 1211, 1212, 

 1213 



,, ,, adduction of, . . . 1209 

 ,, ,, alterations in length of, in 



different registers, 1214 

 ,, ,, ,, thickness in different 



registers, . . 1214 

 ,, ,, centre for movements of, . 742 

 ,, ,, during respiration, . . 280 

 ,, ,, influence of inferior laryn- 

 geal nerve on, . .1209 

 ,, ,, relaxation of, . . . 1210 

 ,, tightening of, 1209, 1210, 1212 

 ,, vibrations of, 1206, 1207, 1208 

 ,, ,, ,, in chest register, 1211, 



1213, 1214 



,, ,, ,, ,, head register, 1212, 



1214 



,, ,, ,, middle register, 1212, 



1213 

 ,, ., ,, influence of strength 



of blast on, . 1213 

 ,, ,, in voice production, 1206, 1207 

 ,, ,, ,, whispering, . . . 1236 

 ,, registers. See Voice. 

 ,, sounds. See Voice. 

 Voice, 1206 



PAGE 



Voice, baritone, ..... 1208 



,, bass, 1208 



,, breaking of, .... 1207 

 ,, contralto, . . . 1208, 1210 



,, in eunuchs, .... 1207 

 ,, falsetto, . . . 1213, 1214 



,, influence of age on, . . . 1207 

 ,, ,, air cavities on, . . 1235 



sex on, . 1207,1210 

 ,, loudness of, .... 1207 

 ,, mechanism of production of, 1206, 1209 

 ,, mezzo-soprano, .... 1208 

 .. organs of. See Larynx, Vocal 



cords. 



., pitch of, 1207, 1209, 1210, 1212, 1213, 



1214, 1220 



,, quality of, . . . 1215, 1218 



,, range of, . . . 1207, 1208 



,, registers, 1210 



chest, . 1210, 1213, 1214 

 head, . . 1212, 1214 



middle, . 1211, 1213 



small, .... 1210 

 thick, .... 1211 

 thin, .... 1213 

 ,, relation to intra-tracheal pressure, 1207 



,, singing, 1206 



,, soprano, 1208 



,, tenor, 1208 



,, tones of, 1215. See also Tones. 



,, compound, 1215, 1217, 1218, 

 1220 



,, ,, consonantal,. .1216,1233 



,, ,, influence of air passages 



on, . . . 1215, 1216 



vowel, . . .1215, 1216 



,, ,, analysis of, . . 1221 



,, ,, ,, flame curves of, 1219, 



1220 



,, pitch of, 1215, 1216, 

 1217, 1220, 1225 



,, ,, ,, phonograms of, 1224, 



1228 



,, quality of, 1216, 1217, 



1218, 1225, 1226, 1230 



,, ,, ,, theories of, 1216, 1218, 



1225, 1226, 1233 



,, ,, ,, wave-forms of, . 1120, 



1228 



,, whispered, 1236 



Volition, . . ^ . : . . 697 

 ,, effect of cortical lesions on, . 697, 

 698, 699, 701, 703, 704, 722, 723 

 See also Volitional move- 

 ments. 



Volitional contraction of muscle, . 707 



,, ,, ,, curve of, 707, 



709 

 ,, ,, ,, effect of fatigue 



on, . 708 

 ,, ,, ,, ,, resistance 



on, . 708 

 ,, rhythm of, 708 

 ,, movements, centre for. See 

 Cerebral cortex. 



,, ,, effect of lesions of 



cerebellum 

 on, 897, 898, 902 

 ,, ,, ,, section of 



pyramids on, . 778 



