INDEX OF SUBJECTS. 



1321 



PAGE 



Sensation, visual, of colour, elementary, 1107, 



1108, 1111 



,, ,, ,, ,, curve of, 1108 



,, ,, ,, at fovea, . . 1087 



,, ,, ,, fundamental, 1107, 



1108, 1121 

 ,, ,, ,, in low in tensity 



spectrum, 1107, 

 1111, 1117, 1118, 

 1120 

 ,, , v ,, from mechanical 



stimulation, 1097 



,, ,, at macula, . 108C 



,, ,, ,, in peripheral 



retina, 1084, 1085, 

 1092, 1095, 1118 

 primary, 1105, 1107, j 

 1112, 1121 ' 



simple, . . 1121 j 

 ,, ,, ,, stereoscopic, . 1144 I 



,, ., ,, subjective, . 1096 



,, theories of, 1105, 

 1106, 1112, 1121 



,, ,, of colour brightness, 1076 



,, ,, ,, curve of, 1079, 



1102 

 ,, ., ,, estimation 



of, 1077, 1078 



,, relative, 1078, 



1079 



,, ,, ,, specific, 1117 



,, ,, colour mixture in, 1081, 



1086, 1120 



,, ,, ,, binocular, 1124 



,, law of, 1082, 1102 



,, theory of, 1118, 



1121 



,, ,, tone of, 1053, 1054, 

 1057, 1058, 



1059, 1067, 



1083 



., ,, ,, indifferent 



parts of re- 

 tina, 1085,1114 



,, ,, ,, effect of con- 



trast on, 1060, 

 1061, 1064 

 ,, fatigue 



on, . 1110 

 ,, ,, ,, relation to 



visual angle, 1055 



,, ,, conditions affecting, 1052 



contrast in, . . 1060 



,, ,, binocular, 1098, 



1099 



,, ,, conditions 



affecting, 1061 

 ,, ,, estimation 



of, . . 1061 

 ,, ,, psychological 



factors in, 1067 

 ,, simultaneous, 



1060, 1062, 

 1070, 1117 



,, successive, 1060, 

 1062 



theory of, 1064, 



1110, 1120, 1121 



curve of, 1068, 1072, 1073, 



1074, 1076 



PAGE 

 Sensation, visual, in different parts of 



retina, . . 1083, 1146 

 ,, ,, diplopia in, 1032,1033, 



1125, 1137 



,, ,, duration of, . . 1067 



,, ,, effect of pressure on 



eye on, . 1097 

 ,, ,, ,, repetition of 



stimuli on, 1068, 

 1069, 1072 

 ,, ,, ,, retinal fatigue 



on, 1058, 1059 



,, ,, Fechner's colours in, 1075, 



1123 



flickering, 1069, 1076, 1077 

 ,, ,, ,, in different re- 



gions of retina, 



1084 



,, ,, ,, influence of area 



of stimu- 

 lation on, 1072 



,, ,, ,, ,, duration of 



stimulus, 



1070 

 ,, ,, ,, ,, induction 



on, . 1070 



,, ,, ,, ,, intensity of 



stimulus, 



1069 



,, ,, tension, 1072 

 of form, . . . 1052 

 foveal, . . 1087, 1120 

 ,, ,. ,, liminal stimu- 



lus for, 1087, 1103 

 ,, ,, ,, photochromatic 



interval for, 1087, 

 1104 

 ,, ,, ,, relation to 



visual purple, 1103 

 ,, ,, fusion of disparate 



points in, 1125, 



1126, 1127 

 ,, point of, 1069, 1070, 



1072, 1098 



,, ,, ,, in, theory of, 1076 



of green, 1107, 1108, 1109, 



1112, 1113, 1114, 1115, 



1117, 1121 



grey, 1113,1114,1118 

 ,, ,, induction in, 1060,1062, 



1076 

 ,, ,, ,, homochroma- 



tic, . .1062 



,, spatial, 1062, 1066, 



1070, 1117, 1120 



,, ,, ,, temporal, 1062, 



1066, 1070, 1117, 



1120 



,, theory of, 1109, 

 1114, 1115 



irradiation in, 1062, 1140 



of light, . .1052, 1053 



,, cerebral centre 



for, . . 1105 

 ,, ,, ,, from electrical 



stimulation, 517, 

 1097 



at fovea, . 1087 



,, ,, macula, 1086, 



1087 



