Disease germs, 141, 169, 170, 216; invisible, identified by the pathological effects, 216; submicroscopic, 141, 169, 170 Disintegration, atomic, 163 Dispersing medium, 168 Dissociation, 235, 242 Distributed nucleus, 138 Distribution, 92, 99, 100, 112, 113, 115; chronological, 92; geographical, hard to distinguish from chronological, 99, 100; of plants and animals, 115; spatial, anomalies of, 112, 113 Disuse, 286, 288, 290, 305, 306; effects, alleged of, 288 Divergence, 9, 36, 39, 57 Divine action, vivifying matter, not a miracle, 187, 188 Dog, 248, 255, 287 Dogmatism, evolutionary, 360 Dolphins, 80 Domination of intellect and will over organic powers, 235 Doubt, “scientific,” 198 Dragonflies, 115 Drone, 158 Drosophila, 17, 18, 19, 27, 85, 86; melanogaster, 85, 86 —gradations in eye-color, wing-length and pigmentation of, 85, 86 Dryopithecus, 270, 310, 311, 323, 345; dentition of, 311, rhenanus, teeth, human-like, 323 Dualism, 174, 198, 199, 231, 233, 234, 351; conscious and unconscious, of Descartes, 198; hylomorphic, 174, 198, 231; of emergence and resistance, 233, 234 _note_; of potency and act, 199; psychic and physical, of Descartes, 198; psychophysical, 198, 231 Duckbill, 287 Duplication, 44, 45, 305; chromosomal, 44, 45; of organs, 305 Dynamic, 206 Ear, 302, 304; helix of, 304 Earth columns, 113 Earthworm, 250, 280 East Indies, 118 Echinodermata, 119, 121, 122 Education, 245, 256, 360; responsible, 360 Educator, modern, 360 Effect, 176, 177 Eggs, 134, 156, 158, 159, 160, 255, 259, 278, 283; of sea urchin, 159, 160; unfertilized, 158; reduced, 158; unreduced, 158 Ego, 209, 210, 224; the, 209, 210; the thinking, 224 Egoism, 256 Egypt, 115, 337, 340 Electrolytes, 168 Electronic theory, 56 Electrons, 163, 174 Elements, radioactive, 180 Elephants, 111, 115, 315; brain of, 315; Siberian, sudden extinction of, 111 Elephas: antiquus, 317; primigenius, 326 Embryologists, 136 Embryology, 141, 275, 276, 308; comparative, 276; experimental, 141 Embryonic additions, 276 Embryos, 276, 278, 279, 280, 281; alleged fish-like stage of, 279, 280; human, 278, 280, 283; mammalian, 281, 283; vertebrate, 281 Emergents, 233 _note_, 234 _note_ Energy-content, 174 Emotion, 214, 231, 246, 247; functions of sensual appetite, 247; a psycho-organic function, 214; organic function, 231 Emperor moth, 267 Emulsifier, 169 Emulsion, 139, 168 Encasement, 3, 4 Encystment, 162 End, 254, 259 Endocrine glands, 292-295, 298; not functionless, 295