INDEX 



571 



MetchnikoflF, 170 

 Methods of insect control, 199 

 Metoncholaimus pristiurus, 97, 98 

 Micellar strands, 518 

 Mictic rotifera, 125 

 Midges, 193 

 Mid-wife toad, 270 

 Migration in fishes, 263 

 Migration of storks, 366 

 Milk snake, 316 

 Miller, N., 271, 464 

 Millikan, 440 

 Millipeds, 177 

 Mimicry, 489 

 Mineral salts, 9, 437 

 Mink, 385 

 Mitochondria, 6 

 Mitosis, 501 

 Mitral cells, 476 

 Mnemiopsis, a comb jelly, 66 

 Moa, 335 



Mocking bird, 354 

 Moenkhaus, 506 

 Mola mola, 249 

 Mole cricket, 180 

 Molgula arenata, 211 

 Molgula manhattensis, 211 

 Mollusca, 142-162; economic importance, 

 161; classification, 142; characteristics, 



143 

 Molluscan growth, 160 

 MoUuscoidea, 127 

 Monads, 506 

 Monarch butterfly, 188 

 Mongolian race, 417 

 Mongoose, 383 

 Monitor, 312 

 Monochorional twins, 535 

 Monocytes, 456 

 Monoecious, 11 1 

 Monogamy, 485 

 ■ Monotremata, 373 

 Monstrosities in fishes, 54O 

 Moore, C. R., 444 

 Morgan, 299, 537, 538 

 Morphology, 2 

 Morula, 160 

 Moss's classification of blood groups, 458 



Mother families, 486 



Motor nerves, 466 



Mouflon, 494 



Moulting, in Arthropoda, 205 



Mountain ranges, 490 



Mourning dove, 345 



Mouse lemur, 412 



Mouth, 428 



Mucous tissue, 426 



Mud crab, 176 



Mud-eel, 268 



Mugger, 309 



Mugger crocodile, 309 



Mule, 400 



Mule deer in velvet, 403 



Muller, 540 



Mummichogs, 245 



Muridae, 392 



Murine opossum, 376 



Muscles of frog, 276 



Muscle substance, 426 



Muskellunge, 245 



Musk-ox, 406 



Musk-rat, 394 



Mussel with Buddha images, 150 



Mustelidae, 384 



Mutation, 524 



Mya, 149 



Myelination, 479 



Myriapoda, 177 



Myristic acid, 443 



Mytilus edulis, I48 



Myxedema, 445 



Myxinoids, 222 



NAILS, 428 



Nais, 104, 105 



Naked bat, 379 



Narwhal, 410 



Nasal mucous membrane, 476 



Neanderthal man, 416 



Nectar from rhododendron, 199 



Necturus, 268 



Necturus, branchial vessels, 267 



Necturus maculosus, 269 



Negative eugenics, 545 



Negri bodies, not protozoa, 45 



Negroid race, 417 



