on, 168
formulae, 337
geometry, 161, 211
knowledge, 193-4, 196-7, 198, 199, 207, 208, 218

Sclerosis and ageing, 19

Scolia, paralyzing instinct in, 172

Scope of action indefinitely extended by intelligent instruments, 141
of Galileo's physics, 357, 370

Scott, 63 _note_

Sea-urchin and individuality, 13

Seailles, 29 _note_

Secondary instincts, 139, 168

Sectioning of becoming in the philosophy of ideas, 317-8
of matter by perception, 206-7, 249, 251

Sedgwick, 260 _note_

Seeing and willing, coincidence of, in intuition, 237

Selection, natural, 54, 56-7, 59-60, 61-2, 63, 64, 68, 95-6, 169, 170

Self, coincidence of, with, 199
existence of, means change, 1 ff.
knowledge of, 1 ff.

Senescence, 15-23, 26-7, 42-3

Sensation and space, 202

Sense-perception. _See_ Perception

Sensible flux, 316-7, 318, 321, 322, 327, 343, 345
intuition and ultra-intellectual, 360-1
object, apogee of, 342-3, 344-5, 349
reality, 314, 317, 319, 327, 328, 352

Sensibility, forms of, 361

Sensitive plant, in illustration of mobility in plants, 109

Sensori-motor system. _See_ Nervous system

Sensuous manifold, 205, 221, 232, 235, 236

Sentiment, poetic, in illustration of individuation, 258, 259

Serkovski, 259 _note_

Serpula, in illustration of identical evolution in divergent lines, 96

Sexual cells, 14, 26, 27, 79-81

Sexuality parallel in plants and animals, 58-60, 119-21

Shaler, N.S., 133 _note_, 184 _note_

Sheath, calcareous, in illustration of animal tendency to mobility, 130-1

Signs, function of, 158, 159, 160
the instrument of science, 329-30

Sigwart, 287 _note_

Silurian epoch, failure of certain species to evolve since, 102

Similarity among individuals of same species the type of generality,
224-6, 228-9, 230-1
and mechanical causality, 44, 45

Simultaneity, to measure time is merely to count simultaneities, 9,
336, 337, 341

Sinuousness of evolution, 71, 98, 102, 212-3

Sitaris, unconscious knowledge of, 146, 147

Situation and magnitude, problems of, 211

Sketching movements, function of consciousness, 207-8

Sleep, 129-31, 135, 181

Snapshot, in illustration of intellectual representation of motion,
305, 306, 313, 315, 344
_See_ View of reality, Cinematographical character, etc.
form defined as a, of transition, 301-2, 317, 318, 321-2, 345

Social instinct, 101, 140, 158, 171-2
life, 138, 140, 158, 265
and pedagogical ch