INDEX 



Acetylene, 40 

 Adulteration of foods, 356 

 Air currents, 21 

 Airplanes, 305 

 Air pressure, 50 

 Airship, 316 

 Alcohol, 536 

 Animated cartoons, 455 



newspaper, 453 

 Annuals, 173 

 Antitoxin, 376 

 Appetite, 87 

 Automobile, 279 



Bacteria, 365 

 Baking powder, 99 

 Balloons, 301 

 Banjo, 123 

 Barometer, 508 

 Bees, 220 



Bell, Alexander, 335 

 Bifd clubs, 475 



music, 226 



Birds and insects, 460 

 Birds and rodents, 464 

 Birds and weed seeds, 462 

 Bluebird box, 230 

 Blue prints, 136 

 Bottle, thermos, 103 

 Bread making, 99 

 Breathing, 18 

 Breeds of poultry, 215 

 Brooks, 49 

 Bulbs, 143, 169 

 Burning, Chemistry of, 12 



Calories, 78 

 Camera, 127, 448 

 Candle, 33 

 Canning, 109 

 Capillarity, 37 

 Carbohydrates, 63 

 Cats, 233, 470 

 Cells, 156 



Central, 340 



Chemistry of kitchen, 114 



Chittenden, Professor, io 



Cistern, 49 



Clermont, 286 



Clutch, 279 



Coffee, 95 



Coldframe, 191 



Combs of bee, 220 



Compass, 289 



Conservation of forests, 500 



Controller, 261 



Cooker, Fireless, 103 



Cooking, 98 



Cornet, 124 



Cultivation of soil, 192 



Cuttings, 142, 212 



Dark room, 133 

 Defects in children, 434 

 Developing, 131 

 Digestion, 60 

 Diphtheria, 376 

 Diseases and bacteria, 368 

 Diseases, contagious, 419 

 Dispatcher, 254 

 Drying fruits, 107 

 Duplex telegraphy, 324 

 Dynamo, 259 



Ear, 440 

 Eclipses, 526 

 Edison, Thomas A., i if 

 Eggs, Candling, 77 

 Eggs, Storing, 76 

 Electric bell, 153 



fan, 152 



iron, 151 

 Electricity, Heating by, n 



Lighting by, 41 

 Enemies of birds, 470 

 English sparrow, 471 

 Exercise, 62 

 Eye, 436 



559 



