their exteriority, 15;
intensity of sensations, 16;
their measurement, 21;
they are not compounds, 23
Sensations, of touch, 60;
of skin, 60 ff.;
of smell, 69;
of pain, 67;
of heat, 63;
of cold, 63;
of hunger, 69;
of thirst, 69;
of motion, 70;
muscular, 65;
of taste, 69;
of pressure, 60;
of joints, 74;
of movement through space, 75;
of rotation, 75;
of translation, 76
Sense of time, see Time
Sensory centres in the cortex, 113 ff.
Septum lucidum, 87
Serial order of locations, 341
Shame, 374
Sheep's brain, dissection of, 81
Sight, 28 ff.;
see Vision
Signs, 40;
sensations are, to us of other sensations, whose space-value is held to be more real, 345 ff.
Similarity, association by, 267, 364;
see Likeness
Size, 40
Skin—senses, 60 ff.;
localizing power of, 61;
discrimination of points on, 247
Smell, 69;
centre of, in cortex, 116
Smith, T. C., 311
Sociability, 407
Soul, the, as ego or thinker, 196;
as a combining medium, 200, 203
Sound, 53-59;
images of, 306
Space, Perception of, Chapter XXI;
extensity in three dimensions primitive to all sensation, 335;
construction of real space, 337;
the processes which it involves: (1) Subdivision, 338;
(2) Coalescence of different sensible data into one 'thing,' 339;
(3) Location in an environment, 342;
objects which are signs, and objects which are realities, 345;
the third dimension, 346;
Berkeley's theory of distance, 346;
part played by intellect in space-perception, 349
Space, relation of muscular sense to, 66, 74
Spalding, 401 ff.
Span of consciousness, 219, 286
Specific energies, 11
Speech, centres of, in cortex, 109;
thought possible without it, 169;
see Aphasia
Spencer, 103, 387, 390
Spinal cord, conduction of pain by, 68;
centre of defensive movements, 93
Spiritual substance, see Soul
Spiritualistic theories of consciousness, 462
Spontaneous trains of thought, 257;
examples, 257 ff., 271
Starr, 107, 113, 115
Steinthal, 327
Stream of Consciousness, Chapter XI, 151
Stricker, 307
Subdivision of space, 338
Substantive states of mind, 160
Succession vs. duration, 280;
not known by successive feelings, 285
Summation of stimuli, 128
Surfaces, feeling of motion over, 70

Tactile centre in cortex, 116
Tactile images, 308
Taine, 208
Taste, 69;
centre of, in cortex, 116
Teleological character of consciousness, 4;
of self-interest, 193
Temperature-sense, 63 ff.
Terminal organs, 10, 30, 52
Thalami, 80, 86, 89, 108
Thermometry, cerebral, 131
'Thing,' coalescence of sensations to form the same, 339
Thinking principle, see Soul
Third dimension of space, 346
Thirst, sensations of, 69
Thomson, Dr. Allen, 129
Thought, the 'Topic' of, 167;
stream of, 151;
can be carried on in any terms, 167;
unity of, 196;
spontaneous trains of, 257;
the entire thought the minimum, 464
'Timbre,' 55
Time, sense of, Chapter XVII;
begins with duration, 280;
no sense of empty time, 281;
compared with perception of space, 282;
discrete flow of time, 282;
long intervals conceived symbolically, 283;
we measure duration by events that succeed in it, 283;
variations in our estimations of its length, 283;
cerebral processes of, 286
Touch, 60 ff.;
centre of, in cortex, 116;
images of, 308
Transcendental self or ego, 196
Transitive states of mind, 160
Translation, sense of, 76
Trapezium, 85
Turner, Dr. J. E., 440
Tympanum, 48
Types of decision, 429

Unity of the passing thought, 196
Universal conceptions, 240
Urbantschitch, 25

Valve of Vieussens, 80, 86
Variability of the emotions, 381
Varying concomitants, law of disassociation by, 251
Ventricles, 79 ff.
Vierordt, 71
Vision, 28 ff.;
binocular, 33-9;
of solidity, 37
Visual centre of cortex, 110, 115
Visual imagination, 302
Visualizing power, 302
Vividness, determines association, 264
Volition, see Will
Volkmann, 285
Voluminousness, primitive, of sensations, 335
Voluntary acts, defined, 92;
voluntary attention, 224;
voluntary trains of thought, 271

Weber's law, 17, 24, 46, 59
Weber's law—weight, 66;
pain, 67
Weight, sensibility to, 66 ff.
Wernicke, 109, 113, 115
Wesley, 223
Wheatstone, 347
Wigan, 300
Will, Chapter XXVI;
voluntary acts, 415;
they are secondary performances, 415;
no third kind of idea is called for, 418;
the motor-cue, 420;
ideo-motor action, 432;
action after deliberation, 428;
five types of decision, 429;
feeling of effort, 434;
healthiness of will, 435;
defects of, 436;
the explosive will: (1) from defective inhibition, 437;
(2) from exaggerated impulsion, 439;
the obstructed will, 441;
effort feels like an original force, 442;
pleasure and pain as springs of action, 444;
what holds attention determines action, 448;
will is a relation between the mind and its ideas, 449;
volitional effort is effort of attention, 450;
free-will, 455;
ethical importance of effort, 458
Willing terminates with the prevalence of the idea, 449
Wundt, 11, 18, 25, 58, 122, 123, 125, 127, 220, 281