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,