Declivity descended by matter, 208, 246, 256, 339-40. _See_ Descending movement Decomposing and recomposing powers characteristic of intellect, 157, 251 Deduction, analogy between, related to moral sphere and tangent to curve, 213 and astronomy, 213 duration refractory to, 213 geometry the ideal limit of, 213-26, 361 in animals, 212 inverse to positive spiritual effort, 212 nature of, 211 physics and, 213 weakness of, in psychology and moral science, 213 Defence and attack in evolution, 132 Deficiency of will the negative condition of mathematical order and complexity, 209 Definition in the realm of life, 13, 105, 106 Degenerates, 133-5 _Dégénérescence sénile (La)_, by Metchnikoff, 18 _note_ Degradation of energy, 241, 242, 246 of the extra-spatial into the spatial, 207 of the ideas into the sensible flux in ancient philosophy, 317-9, 324-5, 327-9, 331, 343, 345, 352-3 Degrees of being in the successors of Kant, 362-3 Degrees of reality in Greek philosophy, 324, 327 Delage, 59 _note_, 81 _note_, 260 _note_ Delamare, 81 _note_ Deliberation, 144 De Manacéine, 124 _note_ Deposit, instinct and intelligence as deposits, emanations, issues, or aspects of life, x, xii, xiii, 49, 103, 105, 136, 365 De Saporta, 107 _note_ Descartes, 280, 334, 345, 346, 353, 358 becoming, 345-6 creation, 346 determinism, 345 duration, 346 freedom, 345, 346 geometry, 334 God, 346 image and idea or concept, 281 indeterminism, 345 mechanism, 345, 346 motion, 346 vacillation between abstract time and real duration, 345 Descending movement of existence, 11, 202, 203, 208, 271, 275, 369 Design, motionless, of action the object of intellect, 154-5, 299, 301-2, 303 Detention in the dream state, 202 of intuition in intellect, 238 Determination, 76-7, 129-30, 223, 246 Determinism, 217, 264, 345, 348. _See_ Inert matter, Geometry in Descartes, 345 Development, 133, 134-5, 141. _See_ Order, Progress, Evolution, Superiority Deviation from type, 82-4 Dialect and intuition in philosophy, 238 Dichotomy of the real in modern philosophy, 350 Differentiation of parts in an organism, 253, 260 Dilemma of any systematic metaphysics, 195, 197, 230 Diminution, derivation of becoming from being by, in ancient philosophy, 316, 317, 322, 323-4, 327-8, 343-5, 352 geometrical order as, or lower complication of the vital order, 236 Dionaea illustrating certain animal characteristics in plants, 107, 108, 109 Discontinuity of action, 154, 306-7 of attention, 2 of extension relative to action, 154, 163 of knowledge, 306 of living substance, 163 a positive idea, 154 Discontinuous the object of intellect, 154 Discord in nature, 127, 128, 254-5, 267 Disorder, 40, 104, 222-3, 225-6, 232-5, 274. _See_ Expectation, Order, mathematical, Orders of reality, two Disproportion between an invention and its consequences, 182