256 



ANIMAL FORMS 



Paramcecium (illus.), 15. 



Parapodium (para, alongside of; 

 pom, foot), 60. 



Parasitism, 48. 



Passeres, 223. 



Pelican (illus.), 212. 



Pelicanus erythrorhynchus (illus.), 

 212. 



Perca flavescens (illus.), 155. 



Perch, 166. 



Perching birds, 223. 



Peripatus eiseni (illus.), 111. 



Pheasant, 217. 



Physalia (illus.), 37. 



Physiology (physis, the nature of 

 a thing ; logos, a discussion), 1. 



Pici, 221. 



Piddock (illus.), 75. 



Pigeons, 218. 



Pike (illus.), 164. 



Pill-bug (illus.), 105. 



Pineal gland, 198. 



Planaria (illus.), 45. 



Plants and animals, differences be- 

 tween, 1. 



Plants, characteristics of higher, 2. 



Plant-lice, 122 ; in ant-nests, 129. 



Plastron, 188. 



Plover, killdee, 216. 



Polychaetes, 59; sedentary (illus.), 

 61 ; development of, 63. 



Polynoe, brevisetosa (illus.), 61. 



Polyzoa (illus.), 68. 



Porcellio scaber (illus.), 105. 



Porcupine (illus.), 232. 



Porpoise, 234. 



Portuguese man-of-war (illus.), 36. 



Prairie-dog, 233. 



Prawn (illus.), 100. 



Precocial birds, 208. 



Primates, 243. 



Proboscis, of flatworms, 46. 



Procyon lotor (illus.), 240. 

 Protoplasm (protos, first; plasma, 



anything molded), 9 ; structure 



of, 10. 

 Protozoa, 11 ; characteristics of, 



17; colonial, 19. 

 Pugettia richii (illus.), 104. 

 Pulsating vacuoles, 16, 17. 

 Pygopodes, 209. 



Quail (illus.), 217. 



Rabbit, 233. 



Raccoon (illus.), 240. 



Race histories and life histories, 27. 



Radial symmetry, 44. 



Rail, 215. 



Rain-crow, 220. 



Raptores, 219. 



Rat, house-, 233 ; wood-, 233 ; 

 musk-, 233. 



Ratita?, 209. 



Rattlesnake (illus.), 191. 



Recognition-marks, 203. 



Regeneration, 51. 



Reproduction, sexual and asexual, 

 5,32. 



Reptiles, general characteristics, 

 185; distribution, 191; anat- 

 omy, 195. 



Retrograde metamorphosis, 99. 



Rotifer (illus.), 66. 



Ruminant, 237. 



Sabella, 62. 



Salamander (illus.), 176; distribu- 

 tion, 178 ; structure of, 179. 

 Salmon, 163. 

 Sand-dollar (illus.), 142. 

 Sandhopper (illus.), 105. 

 Sandpiper, 216. 

 Sapsucker, 221. 



