364 



INDEX 



May-fly, 69 



Mechanism, 30 



Medusa, 17, 163, 165, 168, 170 



Melanopus, 79 



Mendel's Law, 353 



Mesozoic Age, 332 



Metabolism, 34, 35 



Metagenesis, 168, 169, 171, 172 



Metamerism, 16, 156, 203, 208, 222 



Metamorphosis, 68, 104 



Metapleural folds, 228 



Metazoa, 147 



Midge, 108 



Migration, bird, 283 



Migration, fish, 244 



Milliped, 64 



Mind of man, 311 



Mite, 131 



Mitosis, 40 



Mole, 291 



Mollusca, 213, 222 



Monkey, 293 



Monodelphia, 289 



Monotremata, 289 



Morphology, 6, 346 



Mosquito, 106 



Moth, 103, 105 



Moulting, 93 



Mud-puppy, 247 



Muscidse, 111 



Mussel, 218, 220 



Mutations, 351 



Myriapoda, 64 



Natural selection, 11, 349 

 Necturus, 247 

 Nematocyst, 166, 167 

 Nematoda, 4, 183, 186 

 Nematoidea, 183 

 Nemertina, 182 

 Neornithes, 269, 270 

 Nests, bird, 284 

 Nests, fish, 243 . 

 Neuroptera, 100 

 Nutrition, 298 



Obelia, 163 

 Octopus, 220 



Odonata, 70 

 (Edipodinse, 76, 77 

 (Estridse, 110 

 Oligochseta, 210 

 Ontogeny, 344 

 Ontogeny of metazoa, 151 

 Onycophora, 63 

 Open blood system, 81, 206 

 Ophiuroidea, 199 

 Opossum, 290 

 Organic substances, 30 

 Organs, 149, 155, 169 

 Origin of earth, 327 

 Origin of life, 25 

 Origin of man, 314 

 Orthogenesis, 351 

 Orthoptera, 72 

 Ostracoderms, 329 

 Ostrich, 272 

 xOwl, 273 

 Oyster, 194, 218, 219 



Psedogenesis, 250 



Paired appendages, 45, 47, 57, 128, 

 228, 229 



Palseozoology, 5, 340 



Parazoa, 160 



Parthenogenesis, 150 



Passeres, 274 



Pasteur, 27 



Pearls, 219 



Pedicellaria, 195 

 \ Pelican, 272 

 ^Penguin, 271 



Pentadactyl limb, 229 



Perch, 235 



Perching birds, 274 



Peripatus, 63 



Perissodactyla, 295 



Petromyzon, 231 



Phalangida, 130 



Philidota, 293 



Phyla of animals, 19, 21, 24 



Physa, 213 



Physiology, 6, 347 



Phytophaga, 115 



Pigs, 295 



Pinnipedia, 292 



