Chapter XIII

; its relation to interest, 170; its physiological ground, 217; narrowness of field of consciousness, 217; to how many things possible, 219; to simultaneous sight and sound, 220; its varieties, 220; voluntary, 224; involuntary, 220; change necessary to, 226; its relation to genius, 227; physiological conditions of, 228; the sense-organ must be adapted, 229; the idea of the object must be aroused, 232; pedagogic remarks, 236; attention and free-will, 237; what holds attention determines action, 448; volitional effort is effort of attention, 450

Auditory centre in brain, 113

Auditory type of imagination, 306

AUSTEN, Miss, 261

Automaton theory, 10, 101

AZAM, 210

BAHNSEN, 147

BAIN, 145, 367, 370

BERKLEV, 302, 303, 347

BINET, 318, 332

Black, 45-6

Blind Spot, 31

BLIX, 64, 68

Blood-supply, cerebral, 130

Bodily expression, cause of emotions, 375

BRACE, JULIA, 252

Brain, the functions of, Chapter VIII , 91

_Brain_, its connection with mind, 5-7; its relations to outer forces, 9; relations of consciousness to, 462

Brain, structure of, Chapter VII , 78 ff.; vesicles, 78 ff.; dissection of sheep's, 81; how to preserve, 83; functions of,