492 



INDEX 



pewee, wood, 345. 



Phalangidea, 120. 



pharynx, of earthworm, 171 ; of Planaria, 

 184. 



phylum, 104. 



phoebe, 372. 



Physa, 162. 



physiology, 16. 



pickerel, 286. 



pig, 45i. 



pigeon, 369, 380; flying of, 334; pas- 

 senger, 382, 463-464. 



pike, 286; wall-eyed, 292. 



pinchers, 132, 133. 



Piroplasma, 121, 228. 



Pisces, 234, 268. 



placenta, 410. 



plague, 98-100. 



plaice, 288. 



Planaria, 183-i8s, 191. 



plankton, 230. 



Planorbis, 162, 163. 



Plasmodium, 88, 226, 227. 



Platyhelminthes, 7, 191. 



Pleurocera, 162. 



plover, migration of, 351. 



plumes, of birds, 377. 



poison, of spider, 114, 118. 



poison apparatus, of rattlesnake, 328. 



poisonous, Amphibia, 305 ; reptiles, 333. 



pollen, basket, 27, 28; brush, 27, 28; 

 comb, 27, 28. 



pollination of flowers by insects, 68-70. 



pollock, 289. 



Polychata, 177. 



Polygyra, 162. 



polymorphism, 205. 



polyp, 7, 205. 



porcupine, 435, 436. 



pores, of sponge, 211, 213. 



Porifera, 7. 



Portuguese man-of-war, 205. 



prairie chicken, 383. 



prawn, 139, 142. 



predaceous, insect, 70-71 ; mammal, 

 453-4SS. 



prehallux, 256. 



premolar teeth, 405. 



primates, 443-449. 



proboscis, of housefly, 76; of moth, 26; 

 of Planaria, 183, 184. 



proglottides, 188, 189. 



propagation of wild life, 465-468. 



protection of wild life, 461-464. 



protective coloration, 16, 20-31 (see 

 color). 



protoplasm, 202, 239-241 ; composition 

 of, 241; properties of, 222, 241. 



Protozoa, 6, 73, 86, 121, 218-233; clas- 

 sification of, 233; colonial, 231; in 

 drinking water, 230; fresh-water, 224; 

 parasitic, 227; pathogenic, 227. 



pseudopodia, 222, 233. 



pterodactyl, 309. 



Pulmonata, 162. 



puma, 429. 



pumpkin seed, 287. 



pupa, 20. 



pupi|, in eye of frog, 262 (see eye). 



python, 326, 327. 



quail, 380. 



rabbit, 358. 



raccoon, 414. 



radial symmetry, 192, 198. 



radio-ulna, 255. 



radula, 157, 160, 161. 



rail, 367. 



rat, 388, 434, 458. 



rattles, of rattlesnake, 328. 



rattlesnake, 327, 328. 



ray, 278, 279. 



rectum, of grasshopper, 12, 14 (see diges- 

 tion). 



Redi, 244. 



redia, 187. 



reef, coral, 208-209. 



regeneration, of Amphibia, 304; of 

 Hydra, 204; of Planaria, 185; of 

 man, 204. 



reindeer, 414-415. 



relapsing fever, 101. 



remora, 282, 283. 



reproduction, of Ameba, 223; asexual, 

 203; of crayfish, 134; of earthworm, 

 173; of fish, 275-277; of frog, 262^ 

 267; of grasshopper, 18-19; of Hydra, 

 203; of liver fluke, 186-188; of mam- 

 mals, 410; of mussel, 151; of Para- 

 mecium, 221; of Planaria, 185; sexual, 

 203; of spider, 114. 



reproductive system, 239 (see reproduc- 

 tion). 



