Neurograms, 213, 214, 222; extended, 222; imprinted on neurons, 213, 214; objects capable of stimulating an extended organ, 222; objects of, endowed with concrete properties, 222; proportioned to stimuli, 222; physical basis of imagery, 214, 222 Neurons, 213, 222, 350; sensory and central, 213; utility of sensory, 222 New names for fossil duplicates of modern species, 119, 120 New Stone Age, prehistoric, 337 Nihilism, philosophical, 350 Nitrogen snow, 183 _note_; reddish light of, 184 _note_ Non-cosmopolitan species, 283 Non-enents, 309 Non-opposability of human hallux, 50 Non-phenomenon or substance, 209 Non-specialist, when disqualified and when not, 189-191 Non-viable, 25 Novelty, emergent, 350 Nuclear components, self-perpetuating, 139 Nuclear reorganization, 155, 160, 161, 162; a restorative process, 155, 161; means of rejuvenation, 161; none in somatogenic reproduction, 160; periodic, 162; primitive, 162 Nuclear sap, 139 Nucleus, 137, 138, 161; cellular, 138; daughter, 161; distributed, 138; germinal, 161; parent, 161 Nucula, 118 Nutrition, a reflexive activity, 175 Object, 217, 223, 224; concurrence of, extrinsic, 217; indicated spiritual nature of mind, 224; (material) abstract, made of representation, 224; of abstract thought, incapable of making impressions or leaving records on material receptors, 223 Occipital foramen, 272 Occiput, broad, 332 Ocean beds, elevation of, 114, 115 Ocean bottoms, 113-115 Ocean floor, 115 Octopus, 64 Œnothera, 16, 17, 27, 28; gigas, 17; Lamarkiana, 27, 28 Œsophagus, invertebrate, 293 Old Stone Age, 332, 337, 339, 340; class of, 332; prehistoric, 337 Oligocene, 309, 317 Onion-coat, 99, 102, 103, 109; a convenient device, 109; Alpine, 109; hypothesis of, 102, 103 —“transcendental form of,” 102; lithological and biological, 102; mineral envelopes, 102; theory, 99 Ontogeny, 39, 79, 275, 285 Oölites, 79 Opisthonephros, 280, 282 Opposability of simian hallux, 50 Opposition, 218, 219, 234, 235; between imagery and thought, 218, 219; between psycho-organic and spiritual activity, 234, 235; entails distinction, 235 Orang-utan, 33, 271 Orders, 37 Organ, 222, 226, 276, 286, 287, 288, 292, 298, 300, 303; embryonic, 276; functionless, 286, 287, 292; incapable of reflection, 226; material, cannot be effected by the supersensible, 222; nascent and rudimentary, 287, 288; distinction, arbitrary, 288; reduced, 286, 287; vestigial, 292, 300, 303; useless, 286 Organelles, 139 Organic activity, rigidly regulated by metabolism, 228