564 



INDEX 



Permeability. 52 



Phagocytes, 229; action of, 230 



Phenotypes, 362; of second genera- 

 tion, 385 



Phosphorescence, 400 



PhoGphorus cycle, 279 



Photosynthesis, 39, 275; limits of, 

 41; products of, 43; reactions in, 

 42 



Phototropism, 113 (fig.) 



Phylum, 413 



Physical characters, of the ocean, 

 482; of proteins, 46; of proto- 

 plasm, 15 



Physiology, 4 



Physiological characteristics of pro- 

 toplasm, 17; colors of, value, 442 



Pigment spot, 23 



Pigments, chlorophyll, 40; respira- 

 tory, 102 



Piltdown man, 498 



Pimples, 222 



Pine Barrens, 463 



Pines, seeds of, 340 (fig.) 



Pineys, the, 521 



Pituitary gland, 184; hormone of, 

 173; impairment of, 184 



Place of origin of man, 495; of 

 storage in plants, 63 



Plague, 243; and fleas, 243 



Plankton, 486 



Plant adjustments, 430; breeding, 

 4, 390; embrj'o, 300; food, 3H, 

 390; parasites, 210; realms, 456 



Plants, 110; carnivorous, 45; 

 chemical correlation in, 170; 

 convergent adaptations among, 

 432; correlation in, 117; dis- 

 eases of, 204; distribution of 

 shore, 484; floating, 485; food- 

 receiving adaptations in, 434; 

 green, 5, 36; higher, and nitri- 

 fying organisms, 274; insectiv- 

 orous, 435; parasitic, 198 (fig.); 

 reduction division of, 342; ri- 

 valr>' among, 438; seed, 341; 

 Holf-defen.se in, 437; treatment of 

 di.sca.se in, 213 



Plasma, 88 



Plastids, 40 



Poi.soning, 189; by foods, 216 



Poi.son.s, 216; of diphtheria, 232 



Pollen, 335; tubes, 338 



Polluted air, 205 



Polydactyly, 509 (fig.) 



Popes, 520 



Portuguese race, 527 



Posture movement, 133; erect, of 

 man, 533 



Potash, 272 



Potassium, 38, 50, 271 



Pressure, in the sea, 483; osmotic, 

 53 



Prevention of disease, 213; of in- 

 fection, 228 



Printing, 548 



Principles of decomposition, 261; of 

 heredity, 378 



Production, a factor in progress, 

 550 



Products of phytosyn thesis, 43; of 

 decomposition, 262; of putrefac- 

 tion, 268 . 



Progress, man's future, 552; the 

 fact of, 532 



Pro-phase, 288 (fig.) 



Proteases, 67 



Protective resemblance, 441 



Protein, 46, 77, 92, 267; composi- 

 tion of, 94; metabolism, 260; 

 physical properties of, 46; 8)rn- 

 thesis of from amino-acids, 47 



Protoplasm, 5, 45, 283; chemistry 

 of, 16; discovery of, 14; func- 

 tion of, 49; motion of, 14; 

 named, 15; organization of, 48; 

 organized into cells, 13; physi- 

 cal characteristics of, 15; physio- 

 logical characteristics of, 17; 

 universality of, 13 



Protozoa, 119; correlation in, 148; 

 movement in, 119 



Psychotherapy, 187 



Ptomaines, 268 



Ptyalin, 93 



Punnett square, 362 



Pure lines, 349 



Pure line selection, 392 



Purity of gametes, 352 



Pus-forming organisms, 222 



Putrefaction, 69, 259, 265; in- 

 testinal, 217; products of, 

 268 



Quarantine, 235 

 Quinine, 225 



Races, later European, 502 



