INDEX 



471 



Nutrition, influence of, 392 

 Nutritive functions, 146 



- relations, 27, 28 

 Nussbaum, 368 



Observation, 1 



Obstetric frog, 118 



Octopus, 259, 261 



Odontophore, 261 



Odour of beetles, 88 



Odours of animals, 110, 112 



Ogneff, 396 



Oken, 420 



Old age, 332 



Old World monkeys, 295 



Oligochseta, 240 



Ontogeny, 321 



Onychophora, 251 



Ooze, 223 



Ophidia, 282 



Ophiuroids, 243 



Opossum, 291 



Orders of Mammals, 296 



Oreocephalus, 282 



Organelles, 205 



Organ-forming substances, 307 



Organic continuity, 322 



Organisata, 190 



Organisation, specific, 180 



Organism, 431 



and mechanism, 186 



characteristics of, 180-7 



defined, 156, 157 

 Organisms, origin of, 351 

 Organ-pipe coral, 228, 232 

 Organs, 204, 206 



of internal secretion, 1 53 

 Origin of life, 345, 351 



of organisms, 351 

 Originative factors in evolution, 



431 



Ornithischia, 281 

 Ornithorhyncus, 291 

 Ostracods, 251 

 Ostrich, 289 

 Ovary, 306 



Oviparous mammals, 291 

 Ovists, 306 

 Ovum, 306 



-theory, 316 



Owen, 207, 357 

 Oxidase, 151 

 Oxyurus, 238 

 Oysters, 46 



Paedogenesis, 390 

 Pagurus, 73 



Palseontological series, 342, 348 

 Palimpsest, 346 

 Paludina, 348 

 Pangenesis, 366 

 Pangolin, 293 

 Paracelsus, 367 

 Paramecium, 160, 220 

 Parapodia, 239 

 Parasites, 237, 238 

 Parasitism, 51 

 Parental care, 112 

 -in birds, 120 



in Clepsine, 242 



in fishes, 116 



in freshwater mussels, 264 



-in Holothuroids, 247 

 - in Pontobdella, 242 



in spiders, 115 



Parker, G. H., 358, 409 



- W. K., 205, 289, 346 

 Parrots, 78 

 Parthenogenesis 304 

 artificial, 311 

 Partner Algae, 224 

 Partnerships, 72 

 Pascal, 357 

 Passerine birds, 289 

 Past history of animals, 346-61 

 Paste-eels, 238, 256 

 Paternal care, 117, 118, 119 

 Paunch, 149 

 Peacock, 17 

 Pea-crab, 73 

 Pearson, 380 



Peckham, G. W. and E. J., 106 

 Pectoral girdle of Ape, 292 

 Pedicellariae, 244 

 Pelias berus, 285 

 Pelicans, 78 

 Penseus, 251, 317 

 Pennatulid, 228 

 Pepsin, 147 

 Perameles, 291 



