558 



INDEX 



of gastric, 125 ; rate of secretion of, 

 127 ; regulation of secretion, 127-128 ; 

 relation to digestion, 118, 119. See 

 Adrenal, Intestinal, Liver, Pancreas, 

 Parathyroid, Pineal Body, Pituitary, 

 Reproductive, Salivary 



Granular theory, of nature of proto- 

 plasm, 54 



Glottis, 122 



Glycogen, in liver, 161 



Goiter, and iodine, 194-195 ; districts, 

 194-195; endemic, 194; exophthal- 

 mic, 195 



Goldberger, Dr. Joseph, work on vita- 

 min P-P, 104 



Gonads, 200 



" Goose flesh," cause of, 172 



Gorgas, eradicating yellow fever, 491 



Grafting, bud, 258 ; effect of, 258-259 ; 

 in surgery, 259-260 ; process of, 257- 

 259 ; propagation by, 257-260 ; stem, 

 257-258 ; tongue, 259 



Greeks, contributions to science, 10-12 



Growth, of science, 10-17 ; mental, 225 



Guard cells, of stomata, 67 



Guinea pigs, in breeding experiments, 

 329 



Gymnospermae, classified, 520 ; mean- 

 ing of, 520 



Habit, breaking a, 224-225; formation 

 of, 220-221 ; meaning of, 221 



Haemoglobin, 182 ; and oxygen, 146 ; 

 function of, 88, 146-147 ; in corpuscles, 

 88 



Haemophilia, 148 



Hair follicles, origin of, 173 



Harvey, William, discoverer of circula- 

 tion of blood, 163, 164-165 ; influence 

 of Gilbert on, 163 ; portrait of, 143 ; 

 theory confirmed by Leeuwenhoek, 

 19-20 



Health, and adaptability, 414-415; and 

 education, 415-417 ; and longevity, 

 414 ; disease and, 413-414 ; measure- 

 ment of, 419 ; science and, 417-419 



Health education, need of, 7, 415-417 



Heart, auricles of, 152, 154, 159-160; 

 laboratory study of, 152-153 ; proper- 

 ties of muscles of, 85, 152, 154 ; struc- 

 ture of, 152, 154 ; valves of, 152, 154 ; 

 ventricles of, 152, 154 



Hemolysin, antibody, 501 



Hepatic vein, 161 



Heredity, in Andalusian fowls, 318-320 ; 

 in four-o'clocks, 320-322 ; in organ- 

 isms, 333 ; methods of investigating 

 human, 356-362 ; rise of knowledge of, 

 318-333; versus environment, 369- 

 370 



Herreshoff family, inheritance of, 361 



Hexactinellida, 521 



Hippocrates, Father of Medicine, 10-11 



Hirudinea, 523 



Holothuroidea, 522 



Hominidae, 527 



Hooke, Robert, first observer of cells, 

 27 ; microscope of, 27 



Hormone, definition of, 133 ; secretin, 

 133, 191 



Horse, evolution of the, 375, 376, 377 



Human heredity, difficulty in studying, 

 357 ; methods of investigating, 356- 

 362 



Humoral theory, of immunity, 506 



Hybrid, appearance of, 319, 324; de- 

 scendants of, 319-322 ; meaning of, 

 319, 321 ; proportion in different 

 generations, 319-322 



Hybridization, method of breeding, 351 



Hydra, reproduction of, 249-250 



Hydrochloric acid, in gastric juice, effect 

 of, 129-130 



Hydrogen, a chemical element, test for, 

 16 



Hydrophobia. See Rabies 



Hydrotropism, 204, 205 



Hydrozoa, 521 



Hygiene, defects revealed by examina- 

 tion, 416-417; mental, 222-237; 

 of circulatory system, 167-169 ; of 

 digestion, 138-141 ; of respiration, 

 185 ; of skin, 174-175 



Hyphae, of mold, 264, 265 



Hypocotyl, 278 



Immigration, and eugenics, 367-368 

 Immunity, 504-509; active, 452, 456, 

 458 ; acquired, 501 ; antitoxins in, 

 505 ; Ehrlich's side-chain theory of, 

 506; establishing active, 458-459; 

 establishing passive, 508 ; lysins in, 

 505 ; meaning of active, 452 ; mean- 

 ing of passive, 456 ; meaning of per- 

 manent, 456; natural, 506-507; of 

 animals, 345; of plants, 347; of to- 

 morrow, 508-509 ; phagocytic theory 

 of, 504-505 ; racial, 507 

 Immunization active, 452 

 Improved Beach plum, development of, 



348-349, 352, 353 

 Impulse, nature of nerve, 222-223 

 Impulses, types of, 215 

 Incomplete dominance, meaning of, 319 

 Indigestion, causes of, 138-141, 168 

 Ingestion, a life function, of amoeba. 43 

 Infancy, among birds, 298-299; among 

 insects, 297-298 ; among lower ani- 

 mals, 295-296 ; among mammals, 

 299-300 ; among seed plants, 293-295 ; 

 in man, 301-303 

 Infection. See Focal infection 



