INDEX 



319 



Pheasant, 228 (Fig.) 



Phillips, John, 28, 29, 53 



Phillips, O. P., 92 



Phosphate, 65, 71, 120, 246, 285; calcium, 



153 

 Phosphorescence, 14, 56, 113; see Light 



production 

 Phosphorescent organs, 173-176 

 Phosphorus, 32, S3^ 37, 47, 51, 54, 55, 58, 



63, 67, 68, 82, 88, 95, loi, 104 

 Photosynthesis, 51 

 Phyllopods, 121, 125 

 Phylogeny, 108, 149 

 Physicochemical, changes, 74; energy, 20, 



22, 48, 58, 95, 99, 150; environment, 147, 

 160, 232, 254; forces, 52; laws, 14; na- 

 ture of life, 2, 5, 6, 15; processes, 14, 18 



Phytosaurs, 191, 193, 199, 211, 227 



Pigeon, 228 (Fig.) 



Pine, 108 



Pituitary body, 75, 249-251, 289, 290 



Placentalia, 237; see Placentals 



Placentals, 236, 292; see Placentalia 



Placochelys, 203 (Fig.) 



Placodontia, 203 



Planetesimal theory, 25, 26, 34 



Plankton, 91 



Plants, 23, 32, 33, 41, 51-53, 55, 56, 63, 66, 

 67, 69, 70, 80, 87, 91, 99, 100, 105-109, 

 no, III, 166, 217, 257, 285 



Platecar pus , 210 



Plateosaurus , 216 (Fig.), 217 



Pleistocene, 135, 219, 236, 238, 255, 261 



Plesiosaur, 193-196, 200, 201, 206-208, 292 



Pliocene, 135, 236, 256, 261, 263, 266, 274 



Podokesaurus, 211 (Fig.) 



Poisons, 73, 116; see Toxic action 



Polychasta, 128 



Polyno'e squamata, 128 (Fig.), 129 



Pools, 38, 84, 102, 180, 184, 189, 197, 198 



Porcupine, 224 



Porifera, 118, 131, 290 



Porpoise, 155 (Fig.), 200 



Portheus, 209 (Fig.), 210 



Potassium, 33, 36, 37, 47, 52, 54, 55, 63, 



64, 67, 68, 71, 82, 84, loi 

 Poulton, Edward B., 7, 28, 144 

 Predentata, 195, 221, 225 

 Primates, 236, 237, 261, 274, 292 

 Proboscidea, 261, 265, 269-273, 292; sec 



Proboscidians 

 Proboscidians, 262, 263, 266, 269-271; sec 

 Proboscidea 



Proboscis, 270, 271 



ProcolopJwn, 191 



Proganosaur, 193 



Proganosauria, 201, 207 



Proportion, 75, 142, 208, 238, 248-252, 265, 



266, 268-270, 279, 282 

 Protein, 49, 55, 58, 62, 66, 68, 70, 73, 74, 



87, 88, 89, 107, 247-249, 280, 288, 289 

 Prolilanothcrium cmarginatum, 264 (Fig.) 

 Prolocetus, 241 

 Protochordates, 162, 246 

 Protoplasm, 21, 22, 40, 46, 58, 61, 65, 77, 



85, 87, 91-95, 99, 106, no, 114, 116, 232, 



288; origin of, 37, 38 

 Protozoa, 38, 50, 89, 90, 94, 104, iio-iiS, 



119, 131, 143, 157, 206, 253, 254, 290; 



see Organisms, single-celled, unicellular 

 Psychic powers, 114 

 Pteranodon, 226 

 Pteric/ithys, 166, 170 (Fig.) 

 Pkrodaclyl, 226 (Fig.) 

 Pterosaur, 193, 194, 211, 226, 227, 239, 292 

 Ptyonius, 179 (Fig.) 

 Pupin, Michael I., 12, 13 

 Pygmies, 273 (Fig.) 

 Pyrenees, 83, 255, 256 



Quaternary, 161, 168, 178, 193, 227, 236, 

 2.56 



Radioactive elements, 28, 56 



Radioactivity, see Energy of radioactivity 



Radiolaria, 32, 115 (Fig.), 290 



Radium, 6, 11, 28, 41, 54, 56, 95 



Rangifer tarandus, 271 (Fig.) 



Rats, 271 



Rays, 168, 169, 292 



Reaction, see .\ction and reaction 



Reade, T. Mellard, 36 



Red Sea, 102 



Redwood, 94, 96, 97 



Regeneration, 116, 198, 199 



Reichert, Edward Tyson, 79, 169, 245, 247 



Reindeer, 271 (Fig.) 



Reproduction, 17, 18, 20, 102, 103, 105, 116, 

 152, 272 



Reptiles, 131, 137, 142, 161, 163, 165, 168, 

 172, 178, 181, 275, 184-226, 231-233, 239, 

 246, 253, 260, 266; see Reptilia; flying, 

 226, 292; mammal-like, 190, 191, 236, 

 292; Permian, 201; pro-, 185 



