460 



GENERAL ZOOLOGY 



Plovers, 380 ; golden, 391 ; upland, 



381 



Plowshare bone, 370 

 Plumatella, 231 

 Polian vesicles, 243 

 Pollination, 1)1 

 Polymorphism, 49 

 Polyp, 252 ; fresh-water, 203 

 Polyzoa, 233 

 Porcupine, 418, 419 

 Porifera, 278, 297 

 Porpoise, 412 

 POTTS, PROFESSOR, on habits of 



sponge, 276 

 POULTON, PROFE.SSOR, on the vaporer- 



moth, 56 

 Prawn, 142 

 Premolars, 400 

 Primates, 423 

 Prismatic layer, 159 

 Proboscidea, 416 

 Proboscis, 46, 304 

 Procyonidse, 420 

 Pronuba, 92 

 Prostomium, 196 

 Protective mimicry, 48 

 Protective resemblance, 18 

 Proteids, 198 

 Prothorax, 3 



Protoplasm, 202, 205, 211, 280 

 Protopodite, 1: : 10 

 Protorohippus, 428 

 Protozoa, 291 

 Psalterium, 417 

 Pseudopodia, 280 

 Psittaci, 384 



Psychology, comparative, 436 

 Pterosaurs, 362 

 Pulp-cavity, 400 

 Pulvillus, 4 

 Puma, 420 

 Pupa, 36 

 Pygopodes, 375 



Quail, 381, 382, 395 



Quaternary Period, 431, 433, 434 



Rabbit, cottontail, 419; domestic, 



419; gray, 419; jack, 419 

 "Raccoon, 420 

 Rachis, 366 

 Raptores, 383 



Rasping-tongue, 169, 177 



Rational acts, 87 



Hats, 418 



Rattlesnake, 354, 355 



RAY, JOHN, 443 



Rays, 317, 347 



RE DI, FRANCESCO, 446 



Reef, barrier, 262; fringing, 262; 

 coral, 261 



Reflex action, 208 



Regeneration, 244 



Rejuvenescence, 289 



Repellent odors, 32 



Reproduction, by artificial parthe- 

 nogenesis, 290 ; by budding, 258 ; 

 by conjugation, 289; by eggs and 

 spermatozoa, 209 : by equal divi- 

 sion, 282, 288 ; by gemmules, 276; 

 by parthenogenesis, 34 ; by spores, 

 284 ; by statoblasts, 233 



Reptiles, Age of, 360, 362, 396, 410, 

 428 ; definition of, 351 ; geological 

 development of, 360 



Resemblance, protective, 18 



Respiration, 203 



Reticulum, 417 



Rheas, 374 



Rhinoceros, 413, 414, 416, 434 



Rhinoderma, 343 



Robin, American, 390 



Rodents, 418, 431 



Ross, DR. , on life-history of malarial 

 parasites, 286 



Rostrum, 127 



Rotifer, 230 



Rotifera, 231 



Rumen, 417 



Ruminants, 417 



RYDER, PROFESSOR, on environment 

 of oyster, 168 



Salamanders, 339; Alpine, 342; 

 blunt-nose, 340 ; Texan cave, 340 

 Salmon, Atlantic, 320 

 Sandpipers, 380 

 Sand worm, 222 

 Saponification, 200 

 Sapsucker, 385, 393 

 Sarcodina, 291 

 Saw-flies, 82 



Scale-insects, 35, 98 ; San Jose, 41 

 Scallop, 169 

 Scarabs, 44 



