Εικόνες σελίδας
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Ηλεκτρ. έκδοση
[blocks in formation]
[blocks in formation]

Ants, 441
Aorta, 479

Arbor day, 415
Arc light, 270

Armature, 234, 263, 265, 272

Arteries, 477, 479, 480
Artesian wells, 154

Ashes, 29

Assimilation, 474

Atmosphere, 21, 77, 163

composition of, 78

Automobile, 358

Axe, 326

Axil of leaf, 374

[blocks in formation]

490

Baking, 214, 217

Baking Powder, 218

Balance, sense of, 318
Baling press, 339
Ballast, 117

Bamboo, 389, 393

Banana, 402

Barley, 390
Barometer, 23

Bases, 194

Bathing, 493

Battery, 255

storage, 256

Beasts of burden, 425

Bedrock, 163

Bees, 440

Bell, electric, 262

Berries, 401

Biceps, 334, 459

[blocks in formation]
[blocks in formation]
[blocks in formation]

gin, 399

Cottonseed oil, 399
Cotyledons, 368, 408
Cows, 428

Crane, 62, 261, 336
Cream separator, 352
Creosote, 223

Crops, 174, 176
Crossbreeding, 419

Cross section of tree, 407
Crowbar, 326
Crust of earth, 163
Crystalline lens, 287, 294
Cultivating, 173

Currents, electric, 249

Cyclone, 86

Dairying, 175
Damper, 62
Dandelions, 417
Day, 95

Decay, 40, 41, 49
Deciduous, 413

Declination of compass,

Degree of heat, 71

Density, 115

Dermis, 431, 492

Derrick, 336

Developing, 289

Dew and dew point, 78

Diamond, 184

Diaphragm, 457

Dietetics, 471

Digestion, 214, 463

240

[blocks in formation]

bulb, 269

charges, 245

currents, 249
flatiron, 267
magic, 243

meter, 306

motor, 274

power, 271

telegraph, 264

washer, 355

Electricity, 4, 244

Electrolysis, 129

Electromagnet, 260, 272

Electroplating, 266

Element, 130

Emulsion, 202, 442, 470

Enemies of trees, 414

Energy, 112, 121, 206, 256, 271,

274, 325

chemical, 294

muscular, 245

of plants, 366

[blocks in formation]

Epiglottis, 487

Erosion, 167

Esophagus, 467, 487

Evaporation, 144

Evergreens, 413
Excretion, 483
Exercise, 491
Experiment, 6
Eye, 294
glasses, 287

Fabrics, 398
Fahrenheit, 68
Faraday, 272
Far sight, 296
Fats, 208, 399
Fatty tissue, 431
Faucets, 155
Feather, 431

Fermentation, 191

Ferments, 464, 468

Ferns, 382

Fertility of soil, 175
Fertilization, 379
Fertilizers, 176
Fibrin, 477

Field, magnetic, 238, 262
Film, photographic, 287, 289
Filter, 159

Fire, 26, 27, 28

engine, 47

Fireless cooker, 76
Fireplaces, 61

Fishes, 437

Fixed stars, 99
Flame, 28, 33
Flashlight, 254

Flatiron, electric, 267
Flax, 199, 399
Flint and steel, 27

Flowers, 377

Fly, 443

trap, 443

Focus, 286, 289

Fog, 80, 357
Food, 206, 214

of plants, 366

preserving of, 222

[blocks in formation]
[blocks in formation]

Hammer, pneumatic, 19

Hard water, 160

Hardwood, 412

Hearing, 315, 499

Heart, 477

wood, 409

Heat, 28, 71

from electricity, 267
capacity, 147

Heating, 61

Heavenly bodies, 95
Hematite, 179
Hemoglobin, 475
Hemorrhage, 25
Hemp, 399, 400
Horizon, 97
Horse, 425, 426
Howe, Elias, 352
Human body, 449
Hurricane, 85, 87
Hydrochloric acid, 45
Hydrogen, 129, 252
burning of, 133
in fuels, 134

preparation of, 130
properties of, 132

Hydrogen peroxide, 37

Hydroplane, 348

Ice, 144, 170

[blocks in formation]
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