Herbst, 96 ff., 102, 104 ff., 172, 177, 200, 232, 236 Heredity, 21, 52 Hering, 216 f. Hertwig, O., 60, 65 Hertwig, R., 32 f., 60, 107 His, 56, 93 History, 2, 14, 21, 250, 257, 297 ff. of mankind, 306 ff. Holmes, 180 Hume, 6 Hypertrophy, 112, 114 Hypertypy, 112 Idealism, 5, 7 Immunity, 204 ff. Implicit potency, 84 Improvement (of morphogenesis), 212 Indifferent cells, 182 Inflammation, 206 Inheritance, 35, 214 ff. of acquired characters, 217, 275 ff., 290 Irritability, 190 ff. Jacoby, 207 Jaeger, 214 Jennings, 218 Kammerer, 176, 280 Kant, 6 f. Kirchhoff, 50 Klebs, 96, 170, 180, 238, 276 Kölliker, 292 Korshinsky, 239 Krašan, 221, 251 Lamarck, 271 f., 291 Lamarckism, 271 f., 284 ff., 293 ff., 304 Lamprecht, 308, 310 Larva, 41 f., 44 Law of nature, 13, 16 Leibniz, 6 Lens (of eye), 105, 221 Liebmann, 256 Life, 9 f., 16, 21 Lillie, R. S., 236 Limits of regulability, 212 Lithium, 99 “Living,” 9, 16 Localisation, 101, 103, 118 ff. Locke, 6 Loeb, J., 32, 102, 164, 179, 196, 236 Loeb, L., 208 Lyon, 87 MacDougal, 238 f., 276 Machine (definition), 139 Machine-theory of life, 138 ff., 187, 210 Maillard, 196 Manifoldness, 25 f., 30, 45 intensive, 144 Materialism, 283 Materials, transport of, 194 Matter, theory of, 8 Maturation, 31, 87 Mayenburg, v., 195 Means, of morphogenesis, 89 ff., 101, 113, 118, 228, 234 Memory, 216 f. Mendel, 229 f. Merrifield, 198 Mesenchyme, 39, 41, 104, 111, 151 f. Metabolic regulations, 198 f. Metabolism, 16, 184 of fungi, 201 Metschnikoff, 206 Micromeres, 36, 60 Miehe, 116 Mill, J. S., 57 *Mimosa*, 191 Minkiewicz, 198 Modification, 277 Molluscs, 70 f., 86 Morgan, T. H., 32, 66 f., 95, 107, 114 f., 162, 230 Morphaesthesia, 157 Morphogenesis, 20, 52, 76, 112, 118 f. Morphology, 12 Movements, organic, 17 Mutations, 237 f., 276, 291 Nägeli, 266, 292 Nathansohn, 196 Natural selection, 261 f., 290 Nature, 5 ff. Němec, 116 Newport, 57 Newt (regeneration of), 155, 221 f. Noll, 146, 157 f. Nomothetic, 14 f. Normal, 78 Nuclear division, 28 f., 62, 64 f., 72, 235 Nucleus, 28, 35 rôle of nucleus in inheritance, 233 f. Organ-forming substances, 117 *Oscillariae*, 197 Osmotic pressure, 93, 187, 194 f. Overton, 196 f. Oxidation, rôle of, 198 f. Palaeontology, 252 Parallelism (psycho-physical), 146 Parthenogenesis, 32 Pauly, 146, 217, 273 f. Pawlow, 204, 210, 212 Pearl, R., 212 Pfeffer, 195, 201 Phagocytosis, 206 Phenomenon, 5 f. Philosophy, natural, 4 of nature, 4, 7, 9 of the organism, 9, 15 Phylogeny, 255, 291, 297, 304 ff. Physiology, 12 of development (morphogenesis), 20 *Planaria*, 130, 155, 162 f., 200 Plants, 48 f. Plato, 2 Pluteus, 42 Poisons, 205 ff. Pole, 36