volved divergently, 134
_See_ Divergent lines of evolution

Adaptation, 50-1, 55, 57-8, 59, 70, 101, 129, 133, 192, 255, 270, 305-6
and causation, 102
mutual, between materiality and intellectuality, 187, 206-7
and progress, 101-2

Adequate and inadequate in Spinoza, 353

Adjectives, substantives and verbs, 303-4, 315

Aesthetics and philosophy, 177

Affection, Role of, in the idea of chance, 234
in the idea of nought, 281-3, 289, 293, 295, 296
in negation, 286-7

Affirmation and negation, 285-6, 293

Age and individuality, 15-6

Albuminoid substances, 121-2

Alciope, 96

Alexandrian philosophy, 322, 323

Algae in illustration of probable consciousness in vegetable forms, 112

Alimentation, 113-4, 117, 247

Allegory of the Cave, 191

Alternations of increase and decrease of mutability of the universe, 245-6

Alveolar froth, 33-4

Ambiguity of the idea of "generality" in philosophy, 230-1, 320-1
of primitive organisms, 99, 112, 113, 129-30

Ammophila hirsuta, paralyzing instinct in, 173

Amoeba, in illustration of imitation of the living by the unorganized, 33-6
in illustration of the ambiguity of primitive organisms, 99
in illustration of the mobility characteristic of animals, 108
in illustration of the "explosive" expenditure of energy characteristic
of animals, 120, 253

Anagenesis, 34

Anarchy, idea of, 233, 234.
_See_ Disorder

Anatomy, comparative, and transformism, 25

Ancient philosophy, Achilles and tortoise, 311-2
Alexandrian philosophy, 322-3
Allegory of the Cave, 191
Anima (De), 322 _note_
Apogee of sensible object, 344, 345, 349
Archimedes, 343-4
Aristotle, 135, 174-5, 227-8, 314, 316, 321, 323, 324, 328-33, 347, 349,
353, 356, 370
Arrow of Zeno, 308-13
ascent toward God, in Aristotle, 323
Astronomy, ancient and modern, 334-6
attraction and impulsion in, 323-4
becoming in, 313-4, 317
bow and indivisibility of motion, 308-9
Caelo (De), of Aristotle, 322 _note_, 324 _note_
and Cartesian geometry, 334-5
causality in, 323, 325-6
change in, 313-4, 317, 328-9, 342-3
cinematographical nature of, 315
circularity of God's thought, 323-4
concentric spheres, 328
concepts, 326-7, 356
"conversion" and "procession" in, 323
degradation of ideas into sensible flux, 317-8, 321, 323-4, 327, 328,
343-5, 352-3
degrees of reality, 323-4, 327
diminution, derivation of becoming by. _See_ Degradation of Id