394 
- Physeter, 334, 355. 
Picus, 355. 
Pigeon, 320. 
Pinnigrades, 161, 341. 
Pisces, 354, 
Placenta, 198. 
Placental Animals, 355, 382. 
Planorbis, 263. 
Plantigrades, 161, 341. 
Plant-lice, 287. 
Plastron, 311. 
Platypus, 328, 
Pleurobrachia, 242, 350. 
Plover, 319. 
Poison-fang, 52, 67, 373. 
Polycistines, 128, 234, 349. 
Polyps, 50, 54, 75. 
Polyzoa, 255, 351. 
Pond-snails, 263. 
Porcupine, 332. 
Porites, 244. 
Porpoise, 87, 335. 
Portal Circulation, 372. 
Portuguese Man-of-war, 239. 
Poulpe, 268, 379. 
Prairie-chicken, 320. 
Primates, 342, 356. 
Primitive Streak, 195. 
Proboscideans, 337, 356. 
Proboscis of Butterfly, 58. 
cs Elephant, 62, 150. 
Procelous, 373. 
Prognathous Skull, 380. 
Prosobranchs, 263, 352. 
Proteus, 306, 354. 
Protozoa, 200, 231, 349. 
Pseudopodia, 50, 232. 
Pteropods, 55, 261. 
Pulmonates, 262, 352, 
Pygopodes, 315. 
QUADRUMANA, 383, 
Raccoon, 340. 
Radiates, 237. 
Radiolarians, 233, 349. 
Rails, 319. 
Rana, 307, 354. 
Range of Animals, 358. 
Rank of Animals, 216, 
Raptores, 321, 355. 
Rasores, 320, 355. 
Rat, 332. 
Ratite, 381. 
Rattlesnake's Fangs, 67, 
Raven, 327. 
Ray, 302. 
Razor-shell, 260. 
INDEX. 
Redstart, 325. 
Reproduction, 188, 208, 376, 
Reptiles, circulation in, 107, 109, 308. 
ee corpuscles of, 99. 
ss described, 307. 
ee digestion in, 81. 
ee distribution of, 363. 
es lungs of, 116. 
cE mouth of, 60. 
a prehension of, 53. 
ae scales of, 134, 
gs teeth of, 66, 
oh voiceless, 186. 
Respiration, 111. 
Rete mucosum, 127. 
Retina, 180. 
Rhea, 320. 
Rhinoceros, 338. 
Rhizopods, 232, 349. 
Rodents, 331, 356. 
Rotifers, 63, 272. 
Rudimentary Parts, 202. 
Ruminants, 87, 339. 
SALAMANDER, 306, 354, 381, 
Salivary Glands, 121, 373. 
Salmon, 301, 354. 
Salpians, 256, 351. 
Sand-flea, 274. 
Sandpiper, 318. 
Sarcolemma, 39, 199. 
Saurians, 313. 
Sauropsida, 380. 
Saururee, 381. 
Scales of Butterflies, 290. 
OP Fishes and Reptiles, 193, 299, 
381. 
Scallop-shell, 259. 
Scalops, 356. 
Scansores, 323, 355. 
Scapular Arch, 144, 
Scarabeeus, 353. 
Scarf-skin, 373. 
Sclerobasic Coral, 128, 247. 
Sclerodermic Coral, 128, 243, 
Scolopendra, 281, 353. 
Scorpion, described, 277, 353, 
33 digestion in, 78. 
ss mouth of, 52, 59. 
sé spiracles of, 115, 
Sea-anemone, 200, 241. 
Sea-blubber, 238. 
Sea-butterfly, 260. 
Sea-fan, 247. 
Sea-hare, 262. 
Seal, 341. 
sea-lemon, 262. 
| Sea-lily, 248. 
