476 



INDEX 



Diffused light, 158 



Diffusion of gases, 100 



Diffusion of liquids, 101 



Digestion, 94, 350, 361, 362, 376 



Dikes, 263 



Diphtheria, 443 



Dipping needle, 129 



Disc plows, 273 



Discharge of electricity, 132 



Disease, 425, 426, 447 



Disinfection, 429, 452 



Dislocation, 346 



Dispersed light, 155 



Distillation, 80, 87, 115 



Diving bells, 44 



Drainage, 270, 276 



Drift, 266 



Drinking water, 77 



Drop, 29 



Drouth, 271 



Drugs, 367 



Dry cell, 138 



Dry distillation, 116 



Dust, atmospheric, 163 



Dyes, 117, 202 



Dynamo, 143 



Ear, 413 



Earth's crust, 258 

 Earthenware, 260 

 Earthshine, 158 

 Earthworm, 217 

 Echoes, 169 

 Eclipse, 3, 153 

 Economic plants, 307 

 Efferent nerve, 397, 400, 404 

 Effervescence, 118, 191 

 Electric bell, 140 

 Electric charges, 130, 131 



currents, 136 



furnace, 141 



meter, 228 



motors, 145 



power, 145 



stoves and heaters, 214 

 Electrical resistance, 73 

 Electrics, 130 

 Electrolysis, 95 

 Electromagnets, 138 



Electroplating, 142 

 Elements, 97 



in soil, 275 



Elements, number of, 107 

 Embryo, 282, 284, 298 

 Emulsion, 88, 361 

 Endosperm, 285 

 Energy, 24 

 Enzyme, 352 

 Epidermis, 388, 391 



of leaf, 286 



of stem, 291 



Epiglottis, 353, 354, 384 

 Erosion, 268 

 Esophagus, 354 

 Etching, 191 

 Ether, 116 



Eustachian tube, 414 

 Evergreens, 305 

 Excretion, 379, 391 

 Expiration, 381, 382 

 Explosives, 22, 54 

 Eye, 415, 416 



Fats, 116, 198, 223, 347, 358, 361, 



363 



Feldspar, 259, 261, 265 

 Femur, 344 

 Ferment, 352, 356 

 Fermentation, 119, 188, 303 

 Ferns, 301, 304 

 Fertility, 274, 275, 276 

 Fertilizers, 55, 278 

 Fibrin, 378 

 Fibula, 344 

 Filament, 298, 302 

 Filtering, 81, 82 

 Fire, 39, 46 

 Fire-damp, 114 



engine, 43 



Fire, kindling a, 210 

 Fireplace, 211 

 Fishes, 324 

 Flame, 48 

 Flashing point, 115 

 Floating body, 34 

 Floods, 250 

 Flowers, 297, 301, 306 

 Fly, 322. 429 



