INDEX 



359 



of silkworms, i6, 17; mimick- 

 ing wasps, *292 ; scales of, *283. 



Motions of animals, 64. 



Moulting of birds, 244; of silk- 

 worms, 13. 



Mouse, 254; brain of, *i03; 

 lungs of, *85. 



Mouth parts of honey-bee, *88; 

 of insects, 87 ; of mosquito, *8, 

 *88; of moth, *276; of sphinx 

 moth, *9o; of young dragon- 

 fly, *89. 



Movements of Amoeba, *6y. 



Mud -turtle, 221. 



Multiplication of anijpals, 273. 



Murres and eggs, *45. 



Mies decumanus, 260. 



Muscle, an engine, 77; biceps, of 

 man, *7 1 ; of animals, 68 ; of 

 dog. *75; of dogfish, *75; of 

 fish, 74; of leg of cat, how 

 arranged, 72 ; of leg of cat, *72 ; 

 of shark, *75. 



Muskrat, 260. 



Mus rattus, 260. 



Mustelidae, 269. 



Myotis subulatus, 262. 



Myriapoda, i6i. 



Mytilus califomianus, *I42. 



Nature, selection by, 275. 



Nectar, honey-bees gathering, 

 ♦304. 



Neotoma pennsylvanica, 260. 



Nereid, *I49. 



Nereis sp., *I49. 



Nervous system, central, 100; 

 central, of dog, *ioo; of house- 

 fly, *I02; of midge, *I02; of 

 vertebrates, 100. 



Nest, artificial, for ants, how to 

 make, 310; of frogfish, *43; 

 humming-bird, *35; of oriole, 

 *36; of stickleback, 44; of 

 trap-door spider, *40, *4i, *i96, 

 *I97; of turret spider, 41, *42, 

 *I9S; of yellow-jacket, *3i6; 

 of yellow-jacket queen, *3i7. 



Nesting habits of trap-door spider, 

 39; of bird studied, 34; of 

 murres, *\5. 



Nests, birds', how to collect and 



preserve, 340. 

 'Net, insect, how to make, 334. 



Nirmus prcBstcms, *2g<). 



Note-books, students', 325. 



Nudibranchs, 141. 



Nymphs of dragon-fly, 23, *24. 



Oak-gall, *37. 



Obelia, digestive cavity of, *90. 



Odocoileus americanus, 266. 



Ommatostrephes calif ornica, *I43 



One-celled animals, 116. 



Opossum, 256. 



Orang-outang, 272. 



Orb- web, 200, *20i ; diagram of, 

 *20i; how constructed by 

 spider, *203; spider putting 

 in foundation lines for, *202. 



Oreamnos monianus, 266. 



Oriole, nest of, *36. 



Ostrea virginiana, *I39. 



Ostriches, *245; young, *246. 



Otocoris alpestris, *25i. 



Otter, 269. 



Oxygen, how obtained, 79. 



Oxygen, necessity of, 77. 



Oyster, * 1 39; young, * 139. 



Oyster-crab, 156. 



Ovis canadensis, *257, 266. 



Pagurus samuelis, *I55. 



Panther, 269. 



Papilio rutulus, *I70. 



Paramoecium, *68, 116, *ii7. 



Parasites, 293; copepod, on fly- 

 ing-fish, *294; degeneration 

 of, 293; ichneumon, of moth 

 larvae, '''297; internal, 295. 



Parts, external, of bird named, 



*62. 



Parnassius smintheus, *320. 



Penella, *294. 



Perches, 211. 



Perissodactyla, 264. 



Pkoca mtulina, 268. 



Phoebe, black, nest and eggs of, 



*232. 



Pholas, *i40. 

 Physalia sp., *I34. 

 Physeter macrocephalus, 263. 

 Physeteridse, 262. 

 Physiology, defined, 47. 

 Pickerel-frog, 217. 

 Pinnotheres, 156. 

 Pins, insect, 335. 

 Pipe-fish, eggs of, 43. 

 Pituophis hellona, *224. 

 Planaria, alimentary canal of, *92 



