430 INDEX 



Colds, 61 



Color blindness, 284 

 Compass, 238 

 Compound, 12 

 Compression pump, 221 

 Conduction of heat, 96 

 Convection, 98 

 Cooking, 23, 131 

 Corn, 336, 361 

 Cornea, 279 

 Corolla, 346 

 Cotton, 363 

 Cough remedies, 45 

 Crayfish, 386 

 Creosote, 39 

 Crystalline lens, 280 

 Cultivation, 321 

 Cuttings, 353 



Daniell cell, the, 256 



Decay, 52 



Declination, 247 



Dew, 157 



Dew point, 158 



Dextrin, 23 



Diastase, 27, 337 



Diet, 128 



Diseases, of man, 396; of plants, 373, 



377 



Disinfectants, 36 

 Dispatch tubes, 224 

 Dissolution, 94 

 Distillation, 87, 138, 226 

 Drainage, 325 

 Dry cell, 263 



Ears, 302, 304 



Earth, the, 407 



Earth, a magnet, 245 



Earthworm, 384 



Eclipse, 409 



Efficiency, 180, 216 



Eggs, 120 



Electric, bell, 262; cell, 252; current, 



250; lights, 266 

 Electrical units, 251 

 Electricity, 248 

 Electromagnet, 260 

 Electromotive force, 251 

 Element, 12 

 Embryo, 348 

 Emulsion, 18 



Energy, 67, 176; law of, 69 

 Engines, 68, 207 



Enzymes, 337 

 Erosion, 141, 329, 332 

 Evaporation, 10, 92 

 Evolution, 174 

 Exhaust pump, 223 

 Eye, 279 



Farsightedness, 284 



Fats, 1 1 6 



Fehling's solution, 122, 420 



Fertilization, 348 



Fertilizer, 320 



Filtration, 139, 226 



Fire extinguisher, 57, 58 



Fireless cooker, 108 



Flame, candle, 291 



Flax, 364 



Flea, 400 



Flower beds, 324 



Flowers, 346 



Food, 7, 116, 361 



Force, 177 



Force pump, 221 



Formaldehyde, 37 



Fractional distillation, 89 



Freezing, 94 



Frog, 389 



Frost, 157 



Fruit, 349; seedless, 350; varieties 



of, 34Q 



Fuel, needs, 124 

 Fulcrum, 185 

 Fungi, 370, 373 

 Furnace, 100, 102 

 Fusion, heat of, 92 



Gas, 65, 163, 289; engines, 210; meter, 



172; pressure, 163; pumps, 221 

 Germs, 31, 32, 34 

 Germination, 337 

 Glass, 93, 96, 97 

 Glossary, 419 

 Gluten, 24, 119 

 Glycogen, 116 

 Grafting, 354, 356 

 Grain, 336 

 Gravitation, 69 



Gravity, 66, 177; cell, 256; system, 228 

 Greenhouse, 96 

 Gulf Stream, 99, 143 



Health, 5, 6, 7 



Heat, 34, 42, 71, 78, 79, 95, 167 



Heat of fusion, 92 



