Gibraltar skull, 322 Gill arches and clefts, 278, 279 Gills, 70, 279; permanent, 279 Glacial, 104 _note_, 289, 320, 327, 329, 330, 331, 332, 334; deposits, 104 _note_; epoch, 320, 332, 334 —middle of, 332 —close of, 332; period, 289, 327, 329, 330, 331 —fourth or last, 327, 329 —close of, 331 Glaciation, 290 Glacier, continental, 287, 289 Glacier National Park, 108 Glaciologists, 289 Glands, 296, 304; muciparous, 296; supernumerary mammary, 304 Glaurus overthrust, 107 Globigerina, 118 Glucose, 145 Gluteal region, 273 Glyceraldehyde, 145 God, 180, 351; admitted as hypothetical, 351; Author of Life, 180; impossible to prove existence of, 351 Golgi bodies, 140 Gonads, interstitial cells of, 292 Gondwana Land, 114, 115 Gorilla, 51, 270, 271, 272, 273, 314; face of, 271; skull of, 271 Gradation, 82, 87, 315; morphological, 82; of forms, 87; series, 315; temporal succession, 82 Gradual approximation, dogma of, 110 Grammar, “scientific” revision of, 205 Graptolites, 78, 100 Great Peacock Moth, 260 Grey Worm, 246 Grignard reaction, 209 Groups, 335 Gryphaea, 79 Guest, 49, 53 Habit, 8, 265, 266, 267, 291, 328, 333, 334; automatisms of, alleged to be source of instinct, 267; body-modifying, 333 —of squatting, 328; modern, 334 Habitat, 99, 112, 182 Hæmoglobin, 148 Hallucinations, 235 Hallux, human, 50; simian, 50 Halogens, 58 Haptophores, 57 Heidelberg Man, 318, 319, 320; jaw anomalous, 319, 320 Hen, 259, 260 Heredity, 5, 39, 54, 88; alleged cause of homology, 39; biparental, 5 Heterogametes, 158 Hererogamy, 158 Hererozygous, 25, 26, 27 Histogenesis, 59 History, 337, 338, 339; contradicts evolutionary assumption, 337, 338; dawn of, 337; proves primitive man to have been civilized, not barbaric, 339 Homœomorphy, heterogenetic, 79 Homology, 8, 34, 35, 36, 39, 40, 46, 47, 48, 51, 54, 59, 60, 61, 63, 64, 65, 77, 268, 276, 277, 278, 279, 284, 287, 292, 298, 308; definition of, 35; anatomical, 276, 279, 284, 308; application to man, 34, 51, 268; disguised by external diversity, 48; embryological, 48, 278, 279, 284, 308; evolutionary argument from, 34, 47 _note_, 48, 54, 63, 64, 65, 268, 292; genetic explanation of, 39, 40, 47 Homologous organs, 35, 61 Homo neanderthalensis, 333 Homo primigenius, 323, 330, 333, 334, 341, 342; a variety, not a distinct species, 342; same as Homo Mousteriensis, 330; type, fluctional nature of, 341 Homo sapiens, 325, 330, 332, 333, 340, 342, 345; only human species, 342 Homozygous, 25, 27