562 



INDEX 



Palate of man, 120 



Paleontology, 378 



Palisade cells, of leaf, 67 



Pancreas, digestive secretions of, 131 ; 

 internal secretion of, 199 ; relation to 

 digestion, 118. See Diabetes, Insulin 



Pancreatic juice, enzymes of, 131 



Papillae, of tongue, 120 ; functions of, 

 173 



Parasite, definition of, 252; group of 

 bacteria, 393-394 



Paramecium, conjugation of, 49-50, 248, 

 267-268; effect of alcohol on, 50; 

 irritability oir 50-51 ; laboratory 

 study of, 46-47 ; locomotion of, 49 ; 

 mode of defense, 50-51 ; nutrition of 

 48-49 ; reproduction of, 49-50 



Parathyroid glands, location of, 196 ; 

 relation to metabolism, 196 ; secre- 

 tion of, 196. See Tetany 



Parental care, shown by, birds, 298-299 ; 

 fishes and frogs, 296 ; insects, 297-298 ; 

 mammals, 299-301 ; man, 301-304 



Parenthood, development of, 303-304 



Park, Dr. W. H., inoculations with toxin- 

 antitoxin, 452-453 



Parotid gland, in mouth, 121 



Parthenogenesis, 271-272 



Passive immunity, acquiring, 508 



Pasteur, Louis, 3; ideals of, 435-436; 

 treatment for rabies, 430-432; work 

 to disprove spontaneous generation, 

 242-244 



Pavlov, experiments on digestion, 138-139 



Payne, " Habits and Practices in Acci- 

 dent Prevention and Health," 419, 

 the appendix 



Peas, sweet, Mendel's experiments on 

 heredity of, 322-326 ; 327-330 



Pelecypoda, 523 



Pellagra, deficiency disease, 104 



Pepsin, 128 



Pepsinogen, 128 



Peptic gland, relation to digestion, 118 



Peptone, form of protein, 128 



Pericardium, of man, 76 



Periosteum, of bone, 78 



Peristalis, described, 123 



Peritoneum, of man, 76 



Perspiration, 170 



Petri, R. J., devised Petri dish, 396 



Phagocytes, function of, 146-147, 500; 

 504-505 



Phagocytic theory, of immunity, 504-505 



Phagocytosis, 147 



Pharynx, 122 



Photosynthesis, meaning of, 37 ; process 

 of, 36, 37 



Phototropism, laboratory problem to 

 show, 203 ; shown by amoeba, 46 



Phrenology, 5, 214 



Phylogeny, history of entire race or 

 group, 388-389 



Phylum, in taxonomy, 516 



Physics, and its relation to biology, 15-16 



Physiological functions, of organism, 34 



Physiology, meaning of, 17 



Pigment, in skin, 172 



Pineal body, effect of injury to, 200 ; 

 location of, 200 



Pisces, animals of class, 525 



Pituitary gland, location of, 196; rela- 

 tion to growth, 196-197. See Acro- 

 megaly, Dwarfism, Gigantism 



Placenta, animals, 289, 291 ; of plants, 

 274, 278 



Plant, and animal breeding, 343-353 ; 

 experiments by Mendel, 322 ; organs of 

 flowering, 273 



Plants, cellular nature of, 30-31 ; growth 

 of seed, 293-295 ; manufacture of 

 food, 36-38 ; reproduction of higher, 

 273-279 ; specialization in higher, 69- 

 72 ; storage of food in, 70-71 



Plasma, composition of blood, 145 



Plasma membrane, function of, 58 ; of 

 cell, 32 



Plasmodium malariae. See Malarial 

 parasite 



Platelets. See Blood platelets 



Platyhelminthes, 522 



Pleurae, of man, 76 



Pleurococcus, diagram of, 33 ; laboratory 

 problem on, 31 ; reproduction of, 247 



Plexus, 210 



Plum, development of new species of, 

 348-349 



Plumcot, how produced, 349 



Plumule, 278 



Points, breeding for, 349-350 



Poise, mental. See Mental poise 



Polar, nuclei, 276, 277, 278 ; bodies, 270 



Pollen, agencies to scatter, 276 ; effect of, 

 277-278; grains, 275, 276, 277; 

 laboratory study of effect of sugar solu- 

 tion on, 275 ; nuclear division in, 276 ; 

 production of, 275 ; tube, 275, 276, 277 



Pollination, agents 'of, 293 ; artificial 

 method of, 352 ; process of, 276 



Polyneuritis, cause of, 100 ; cure for, 100 



Population, Malthus' Essay on, 343 



Pore, of skin, 173 



Porifera, classified, 521 ; meaning of, 521 



Portal, circulation, 160-161 ; vein, 161 



Postulates, of Koch, 440 



Potatoes, propagation of, 350 



Pouchet, on spontaneous generation, 

 242-244 



Precipitins, function of, 501-502 



Preservation of food, discussed, 399 



Primates, classified, 527 ; animals of 

 order of, 527 



