434 



INDEX 



Elements, 53, 55 



carbon as, 60 



hydrogen as, 97 



in food, 298 



iron as, 85 



nitrogen as, 101 



number of, 56 



oxygen as, 90 



phosphorus as, 72 



sulphur as, 77 

 Enzymes, 322, 323, 324 

 Epidermis, 360 



of leaf, 201 

 Epiglottis, 348 

 Esophagus, 310, 317 

 Eustachian tube, 317, 407 

 Evaporation, 44, 124, 208, 209, 



213, 364 



Evans, Dr. W. A., 117 

 Excretion in animals, 280 



in man, 357ff. 



in plants, 221, 222 

 Excretory system, 35711'. 

 Exercise, necessity of, 381 

 Eyes, of animals, 281 



of man, 399 

 care of, 405 

 defects of, 405 

 structure, 400 



Fatigue, 381 



Fats, 302, 323, 324, 326 



test for, 302 



Fauna, definition of, 249 

 Femur, 373 

 Fertilization, 235 

 Fibula, 373 

 Fire extinguisher, 69 

 Tireless cookers. 21 

 Fishes, 263 

 Flowers, 232 



Fly, abolishment of, 426 



development of, 425 

 Focus, 402, 403 

 Fog and clouds, 126 

 Food, absorption of by animals, 

 278 



adulteration, 307 



composition of, 304ff. 



cooking of, 307 



diffusion of, 322, 325 



digestion of by animals, 276, 

 277 



elements in, 298 



manufactured by plants, 203, 

 206 



protection against infection. 

 424 



quantity and kind of, 306 



selection of, 306 



storage of, 205 



stuffs, 299fT.-326 



supplying animals. 287 



uses of, 198, 207, 298, 305 

 Frost, 125 

 Fumigation, 423 

 Fungi, 243 

 Furnace, blast, 86 



phosphorus, 73 



Ganglia, 384 



Gases, boiling points of,- 40, 42 



change from liquid to g., 35 



change in volume, 47 



effect of temperature upon, 18 



molecules in, 10 

 Gastric juice, 323 

 Germicides, 414 

 Germs, 412, 413, 414, 421 

 Glands, adrenal, 268 



definition of, 277 



digestive, 310, 311 



