INDEX 



563 



Primroses. See Evening Primrose 



Priority, law of, 514-515 



Production, breeding for increased, 351 ; 

 of new species, 347-349 



Progress, in school, relation of intelli- 

 gence to, 229-230 



Propagation, methods of animal, 353- 

 354 ; methods of plant, 352-353 ; of 

 dahlia, 349-350 ; of potato, 350 ; vege- 

 tative. See Vegetative propagation 



Prophase, stage in cell division, 62 



Protease, an enzyme, 38 ; erepsin, 132 ; 

 trypsinogen, 131 



Protection, of young, 292-304 



Protein, foods containing, 95 ; formation 

 of, 38 ; insufficiency of, 93, 95 ; labora- 

 tory problem on effect of gastric juice 

 on, 126 ; laboratory problem on rela- 

 tion of time of digestion to size of, 

 126 ; laboratory problem on rate of 

 digestion of different animal, 127 ; 

 manufacture of, 37-38 ; metabolism of, 

 188-190 ; process of synthesis, 37-38 ; 

 product of protein-synthesis, 37-38 



Proteose, form of protein, 128 



Protoplasm, cause of variety in, 306- 

 307 ; cause of likeness in, 307-308 ; 

 characteristics of, 29-30, 55-57 ; dis- 

 covery of, 28 ; functions of different 

 parts of, 57-60 ; effect of alcohol on, 

 50; named, 28; specialization of, 5;"- 

 52 ; structure of, 53-55 ; reticular 

 theory of, 53-54 ; alveolar or foam 

 theory of, 54 ; granular theory of, 54 ; 

 variety in, 306-308 



Protozoa, classified, 520-521 



Pteridophyta, classified, 519-520 



Pterodactyl, prehistoric flying reptile, 

 382-383 



Ptomaines, 495 



Ptyalin, enzyme of saliva, 121 



Pulmonary, artery, 153 ; circulation, 

 160 



Pulse, cause of, 156 ; laboratory study 

 on rate of, 156-157 



Punnett squares, 328, 330, 332 



Purkinje, discoverer of protoplasm, 28 



Pustules, of smallpox, 423, 425 



Pyloric valve, of stomach, 125 



Pyorrhea, cause of, 110-111 



Pyrenoids, structures in Spirogyra, 32 



Quality, breeding to improve, 330 



Rabies, cure of, 434 ; discovery of treat- 

 ment by Pasteur, 430-432 ; effect on 

 animals, 433 ; eradication of, 434 ; 

 nature of, 432-433 ; preparation of 

 vaccine for, 432 ; prophylatic or pre- 

 ventive treatment of, 434-435 ; trans- 

 mission of, 433 



Race improvement, necessity of, 362- 

 363 ; suggestions for, 363-368 



Reactions, conscious, 219 ; glandular, 

 221-222; in learning, 219; levels of, 

 216-217, 218, 219, 220 ; types of, 216- 

 217. See Nervous reactions 



Recapitulation, doctrine of, 388-389 



Recessive character, defined, 324; list 

 of, 333 - 



Red corpuscles, in lungs, 179 



Redi, Francesco, experiments on spon- 

 taneous generation, 239-240 



Reduction division. Sec Maturation 



Reed, Major W., work on yellow fever, 

 487-491 



Reflex, conditioned, 217-219 ; develop- 

 ment by conditioned response, 218 ; 

 nature of, 217-219 ; simple, 215 



Refrigeration of foods, 399 



Regeneration, in amoeba, 56 ; in higher 

 animals, 257 ; in lower animals, 256, 

 257 ; similarity to vegetative propaga- 

 tion, 255-256 ; in Stentor, 56 ; in 

 Stylonychia, 56 ; in Uronychia, 56 



Rennin, 128, 129 



Reproduction, asexual. See Asexual re- 

 production 



Reproduction, by binary fission, 247- 

 248 ; by budding, 248-250 ; by spore 

 formation, 250-251 ; by vegetative 

 propagation, 255-263 ; by two special 

 cells, 264 ; necessity in cells, 246-247 ; 

 of amoeba, 44, 248 ; of animals, 281- 

 291 ; of bacteria, 247 ; of birds, 288 ; 

 of frog, 2.82-287; of higher plants, 

 273-279; of mammals, 288-291; 

 of mold, 264, 265 ; of Paramecium, 

 49-50; 248; 267-268; of Pleuroccus, 

 247 ; of Spirogyra, 247-248, 265-267 



Reproduction, sexual. See Sexual Re- 

 production 



Reproductive glands, relation to normal 

 development, 200-201 ; secretion of, 

 200 



Reproductive processes, in organisms, 

 purpose of, 34 



Reptile, flying, 382 



Reptilia, animals of order, 526 



Jlespiration, 177-185 ; definition of, 182 ; 

 external, 183 ; hvgiene of, 185 ; in- 

 ternal, 183 ; in plants, 36, 38-39 ; of 

 amoeba, 44; of fish, 177-178; of 

 insects, 177 ; of higher animals, 178 ; 

 products of, 182-183, 184; rate of , 183 



Respiratory, movements, 181-182 ; pas- 

 sages, irritation of, 179-180 



Respiratory tract, diseases of, adenoids, 

 179 ; tonsillitis, 180 



Response, laboratorv problems, of plants 

 to gravity, 202-204 ; to sunlight, 203 ; 

 to water, 204 



