386 



INDEX 



Owen, 379. 



Owls, 285 ; barn, 285 ; screech, 285 ; 



burrowing, 285. 

 Oysters, 113. 

 Oxygen, 7. 



Palseozoic, age of invertebrates, 343. 



Pancreas, 362. 



Paramecium, 30, 31, 358 ; reproduc- 

 tion and conjugation of, 31. 



Parrots, 290 ; Carolina, 290. 



Partridges, 287. 



Pearl oyster, 114. 



Pearls, 111. 



Pelecypoda, 112. 



Pelican, white, 283. 



Penguins, 280. 



Perch, 208 ; respiration of, 211 ; ali- 

 mentary canal of, 211 ; circulation 

 of, 212 ; plan of structure, 213 ; re- 

 production of, 214. 



Perching birds, 291. 



Pericardium, 109. 



Petrel, stormy, 282. 



Phrynosoma, 257. 



Physa, 115, 116. 



Pigeons, 287. 



Pike, gar, 217, 218. 



Plant lice, 190. 



Plantigrade animals, 324. 



Plastron, 262. 



Pliny, 374. 



Plum curculio, 188. 



Pluteus, 100. 



Pompano, 221. 



Porcupine, 327. 



Porifera, 36 ; classification of, 44. 



Pouched mammals, 313. 



Prairie dogs, 328. 



Prawns, 137. 



Primates, 333. 



Prostomium of earthworm, 75. 



Protective resemblances, 355. 



Protoplasm described, 11 ; work of, 

 12. 



Protozoa, 29 ; characteristics of, 33 ; 

 economic importance of, 34 ; classi- 

 fication of, 35 ; secretion and diges- 

 tion of, 362 ; circulation of, 363 ; 

 reproduction of, 364. 



Psalterium, 321. 



Pseudopodia, 14. 



Pupse of mosquito, 186. 

 Pyloric ca^ca, 91. 



Quahog, 112. 

 Quails, 286, 287. 

 Quill, 269, 271. 



Rabbit, gray, 302 ; white, 357 ; diges- 

 tion of, 306 ; hair of, 302 ; eyes of, 

 303 ; ears and nostrils of, 303 ; 

 teeth of, 304 ; food of, 304 ; loco- 

 motion of, 305 ; digestive system 

 of, 306 ; rcsjiration of, 307 ; circu- 

 lation cf , 309 ; economic import- 

 ance of, 309. 



Raccoon, 324. 



Raehis, 271. 



Radial symmetry, 89. 



Ray, 216; electrical, 217 ; sting, 217. 



Ray, John, 376. 



Redia, 65. 



Regeneration of lost parts in an earth- 

 worm, 83 ; in echinoderms, 100 ; in 

 crustaceans, 141. 



Reptiles, fossil, 347. 



Reptilia, 246 ; characteristics of, 265 ; 

 adaptations of, 265, 266 ; classifica- 

 tion of, 267. 



Reproduction in animals, 364. 



Resemblances, protective, 355 ; ag- 

 gressive, 357. 



Respiratory cseca, 363. 



Reticulum, 321. 



Rhinoceros, 320 ; Indian, 320 ; black, 

 320. 



Rodentia, 327. 



Rotifer, 70, 71. 



Roundworms, 64, 68, 69. 



Rumen, 321. 



Ruminants, 321 ; stomach of, 321 ; 

 cud of, 321. 



Salamanders, 239 ; spotted, 239. 

 Salmon, 225, 227. 

 Sand-dollars, 97. 

 San Jose scale insect, 178. 

 Sapsucker, yellow-bellied, 288. 

 Sawfishes, 215, 217. 

 Scale insects, 178, 196. 

 Scales of a fish, 208. 

 Schwann, 378. 

 Schleiden, 378. 



