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- 



ments 

 on, 1136, 



1138 

 ,, .. ,, muscular 



sense 

 on, 1134, 



1138 

 as >> retinal 



r i val r y 

 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 

 j, ,, 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, 

 Petromyzon, spinal nerves of, . . 790 



Petrous ganglion, .... 793 



Pfluger'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-aesthetic elements of retina, . 1121 



Photo-chromatic interval. See Sensation, 



visual. 

 Photo-ha?matochometer, . . .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 nerves. 



Pinna, 1149, 1163 



,, reflex twitch of, . . .892 



,, retraction of, . . . ■ 618 



Pitot's tubes, 86 



Placenta, 351 



Plane of fixation, visual, . . . 1129 



Planes of body, . . 228, 229, 230, 231 

 Plate, electric, . . . . .563 

 Plateau of cardiogram, .... 37 

 ,, ventricular pressure-curve, 18, 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 



