I 3 o8 



INDEX OF SUBJECTS. 



PAGE 



Perception of distance, influence of bin- 

 ocular vision 

 on, 1133, 



1134, 1137 

 ,, conver- 

 gence 

 on, 1135, 



1137, 1138 

 ,, dispara- 



tion on, 1137, 

 1138 



-., ,, eye-move- 



ments 

 on, 1133, 



1134, 1135, 



1136, 1137 

 ,, ,, ,, head-move- 



m e n t s 

 on, 1136, 



1138 



,, ., ,, muscular 



sense 

 on, 1134, 



1138 



.. ,, ,, retinal 



rivalry 

 on, . 1138 



,, ,, ,, sensation 



ofinner- 

 v a t i o n 

 on, . 1134 



,. ,, ,, sensitive- 



ness of 

 retina 

 on, 1138, 

 1139 



,, ,, psychological fac- 



tors in, 1136, 1137 

 ,, ,, relation of, to ideas 



of size, . .1136 

 relative, 1133, 1136, 



1137, 1138 

 ,, ,, retinal factors in, 1134 



,, theory of, . .1136 



of form, . . . .1139 



,, height, 1133, 1137, 1138 



,, movement, 1146, 1167, 1168 



,, ,, acceleration 



of, 1200, 1201 



,, active, 1013, 1016 



,, ,, passive, 1013, 



1014 

 ,, ,, position of 



head, 1196,1198, 

 1199,1201,1202 



,, ,, posture, 1013, 



1014 



,, ,, rotatory, 1200, 



1201, 1202 



,, ,, resistance, . 1013, 1021 



,, ,, size, .... 1139 



,, space, . 934, 936, 938, 942, 



1013, 1025, 1122, 



1132, 1163, 1164, 1195 



,, ,, in animals, . . 1148 



,, ,, centre for, . .760 



,, ,, illusions of, . 942, 



1140, 1141, 1147 



,, ,, influence of mus- 



cular sense on, . 1164 



PAGE 



Perception of space, physiological fac- 

 tors in, .1122,1132 

 ,, ,, point of reference 



for, . . 1133, 1135 

 ,, ,, psychological fac- 



tors in," . .1136 

 ,, ,, relation to semi- 



circular canals, 1202, 

 1203 



,, ,, theories of, . .1136 



Perikaryon, 594, 784, 787, 788, 791, 792, 810 



See also Nerve-cell. 



Perilymph, .... 1164, 1179 



Periosteum, sensory nerves of, . . 1006 

 Peristalsis, . . . 171, 180, 183, 329, 



330, 853 



Perpendicular bundle, .... 771 



Persistence of visual sensation, 1067, 1068, 



1069, 1074, 1076, 



Pctromyzon, spinal nerves of, . . 790 

 Petrous ganglion, . . . .793 



Pfliiger's law of contraction, . 503, 508, 513, 



515, 557 



,, ,, irradiation . .821, 823 



Phialidium, ear of, . . . .1167 

 Phonation. See Voice. 



Phonautograph, ..... 1224 

 Phonogram, . . . 1224, 1228 



Phonograph, . . 1216, 1225, 1229 



Phosphenes, 1097 



Photo-sesthetic elements of retina, . 1121 

 Photo-chromatic interval. See Sensation, 



visual. 



Photo-hrematochometer, . . . 145 



Photometry, colour, .... 1076 



flicker, .... 1076 



Photophobia, 967, 1089, 1096, 1102, 1105 



Phrenograph, 283 



Physiological point, visual, . 1055, 1086 



Picric acid, yellow vision from, . . 1095 

 Piezometer, . . . . . .63 



Pigeon, cerebellum of, . . . 894, 898 

 cerebral cortex of, 700, 701, 704, 754 

 muscle spindles of, . . . 1008 

 optic lobes of, . . . 700, 701 

 semicircular canals of, . .1199 

 spinal cord of, 814, 827, 834, 878, 879 

 Pigment, retinal. See Retina. 

 Pillars of fauces, in deglutition, . . 315 

 ,, gustatory functions of, 1237 



Pilocarpine, effect of, on retina, . .1103 

 Pilomotor nerves. See Sympathetic nerve*. 



Pinna, 



,, reflex twitch of, 



,, retraction of, 

 Pitot's tubes, 

 Placenta, 



Plane of fixation, visual 

 Planes of body, 



Plate, electric, .... 

 Plateau of cardiogram, . 



,, ventricular pressure-curve, 



.1149, 1163 

 . 892 

 . 618 

 86 



. 351 

 . 1129 



228, 229. 230, 231 

 563 



18. 



37 

 19, 

 39 



Plethora, effects of, on circulation, . 77 

 Plethysmograph, .... 156, 162 

 Pleurosthotonos, .... 895, 896 

 Plexus of Auerbach, . 327, 329, 668, 672 

 brachial, . . 156, 633, 669, 670 



,, cceliac, 642 



,, carotid, . . . . 1157 



