ant, 205
and space in ancient philosophy, 318, 319.
_See_ Duration

Tools and intellect, 137-41, 150-1.
_See_ Implement

Torpor, in evolution, 109, 111, 113, 114 _note_, 120, 128-35, 181, 292

Tortoise, Achilles and the, in Zeno, 311

Touch, science expresses all perception as touch, 168
is to vision as intelligence to instinct, 169

Track laid by motion along its course, 309-12, 337

Transcendental Aesthetic, 203

Transformation, 32, 72, 73, 131, 231, 263

Transformism, 23-5

Transition, form a snapshot view of, 301-2, 316-7, 318, 321, 344-5

Transmissibility of acquired characters, 75-84, 87, 168, 169, 172-3,
225-6, 230-1

Transmission of the vital impetus, 26, 27, 79, 85, 87, 88, 93-4, 110,
126-7, 128, 230, 231, 246, 255, 256, 257, 259, 270

Trigger-action of motor mechanisms, 272

Triton, Regeneration in, 75

Tropism and psychical activity, 35 _note_

Truth seized in intuition, 318-20

Unconscious effort, 170
instinct, 142-3, 144, 145-6, 147, 166
knowledge, 145-8, 150-1

Unconsciousness, two kinds of, 144

Undefinable, reality, 13, 48

Understanding, absoluteness of, 153-4, 190-1, 197-8, 199, 200
and action, ix, xi, 179
genesis of the, ix-xv, 49, 189, 207-8, 257-9, 359, 361-2
and geometry, ix, xii
and innateness of categories, 147, 148-9
and intuition, 46-7
and life, ix-xv, 13, 32-3, 46-50, 88-9, 101, 147-8, 149, 152, 162-5,
173-4, 176-7, 178, 195-201, 213, 220, 222-3, 224, 226, 257-9, 261,
266, 270, 271, 313, 361-2, 365
and inert matter, 166, 168, 179, 194-5, 198, 205-6, 207, 219, 355
and the ready-made, xiii, 48, 237, 250, 251, 273, 311, 321, 328-9,
354, 358
and the solid, ix
unlimited scope of the, 149, 150, 152
_See_ Intellect, Intelligence, Concept, Categories, Frames
of the understanding, Logic

Undone, automatic and determinate evolution is action being, 249

Unfolding cause, 73, 74

Unforeseeableness of action, 47
of duration, 6, 164, 340-2
of evolution, 47, 48, 52, 86, 224
of invention, 164
of life, 164, 184
and the willed order, 224, 342-3
_See_ Foreseeing

Unification as the function of the intellect, 152, 154, 357-8

Uniqueness of phases of duration, 164

Unity of extension, 154
of knowledge, 195-6
of life, 106-7, 250, 268, 271
of mental life, 268
and multiplicity as determinations of space, 351-3
of nature, 104-5, 189-90, 191, 195-6, 197, 199, 322, 352, 356-8
of the orga