INDEX 



459 



Mimicry, protective, 58, 73 



Miner, Jack, and birds, 400 



Minks, 432 



Minnows, 329 



Mites, 141; harvest, 143; itch, 144 



Mitosis, 131 



Mniotiltidae, 392 



Moebius, Professor on the oyster, 200 



Molars, 404 



Mole cricket, 19 



Moles, 426 



Mollusca, 207, 220, 309 



Molluscoidea, 308 



Molt, 13, 146, 158 



Molting, 10, 23, 158 



Monarch butterfly, 54 



Monkeys, 427 ; spider, 428 



Monotremata, 413 



Morphology, 112, 441 



Mosaic vision, 3 



Mosquitoes, 73; control of, 74, 329 



Moss animals, 308 



Mother Carey's chickens, 381 



Mother of pearl, 192 



Moths, 61 ; American, 63 ; Chinese 

 silkworm, 62 ; clothes, 67 ; codling, 

 66 ; corn-borer, 67 ; giant silkworm, 

 63; gypsy, 66; hawk, 64; silk- 

 worm, 61 ; tussock, 65 ; under- 

 wings, 63 ; yucca, 105 



Motor nerve cell, 245 



Mucous glands, 321 



Mud dauber, 79 



Mud puppy, 347 



Murray, Sir John, on coral islands, 281 



Museum, of Comparative Zoology 

 (Harvard), 448; of Natural His- 

 tory, 447 



Museums, American, 447 



Mussel, fresh water, 202 



Mutant, 173 



Mutation, 173 



Mutation theory, 188 



Nacreous layer, 191 

 Nagana, 71 



National Museum, 447 

 Natural selection, 182 

 Nauplius, 167 

 Nautilus, 217 

 Nearctic realm, 116 

 Necturus, 347 

 Nemathelminthes, 256, 308 

 Nematoda, 308 

 Neotropical realm, 116 

 Nephridia, 193, 243 

 Nerve cell, 245 

 Nerve cord, 306 



Nervous system, 10 ; peripheral, 244 ; 

 radial, 229 



•Nettling cells, 269 



Neuters, 78 



Newts, 344 



Nictitating membrane, 332, 369 



Nitrogenous wastes, 10 



Noguchi, Professor, and yellow 

 fever, 102 



Nomenclature, 107 ; binomial, 443 



Nostrils, 312 



Notochord, 304 



Nucleus, 130; division of, 131 ; func- 

 tion of, 130 



Nudibranch, 214 



Nymph, 13, 96 



Ocelli, 3 



Octopus, 217 



Odonata, 27 



Odors, repellent, 40 



Olfactory lobes, 316, 338, 373 



Operculum, 312 



Ophidia, 357 



Ophiuroidea, 309 



Opossum, 414 



Optic lobes, 316, 338, 373 



Oral surface, 222, 293 



Orang-utan, 428, 430 



Order, 23, 109 



Organ systems, 117 



Oriental realm, 116 



Orioles, 393 



Ornithologists, 395 



Orthoceras, 218 



Orthoptera, 23 



Osborn, Professor, on prehistoric 



man, 435 

 Osculum, 284 

 Osmosis, 120 

 Ostriches, 377 

 Otocyst, 146 

 Otoliths, 316 

 Ova, 375, 409 

 Ovaries, 12, 154, 230, 245, 317, 338, 



375, 409 

 Overpopulation, 183 

 Oviduct, 12 

 Oviparous, 321 

 Ovipositor, 6, 18, 77 

 Owls, 388 

 Oxen, 418 

 Oxidation, 122 



Oyster, 196 ; drill, 212 ; farms, 198 

 Oyster-shell scale, 36 



Palsearctic realm, 116 

 Palate, 406 

 Paleontologists, 181 

 Paleontology, 441 

 Palpi, 4, 149, 192 

 Paludicola?, 384 



