INDEX 



413 



Infection, 161 



how it takes place, 161 

 Inoculation, relation to soil, 317 

 Insect, 318 



abdomen, 319 



classification of, 140 



collecting, 322 



damage to clothing, 139 



description of, 319 



friends, 327 



garden friends, 328 



harmful to fruit trees, 327 



household pests, 138, 139 



how to fight, 138, 139, 325 



injurious, 329 



life history of, 321 



recognition of, 322 

 Inspiration, in relation to breathing, 



62 



Insulating material, 360 

 Intestines, 100 

 Iris, 258 



Kerosene emulsion, 326 



light, 244 



Kilowatt hours, 369 

 Kindling temperature, 181 

 Kitchen, a model, 126 



cleanliness in, 127 



ideal, 280 



Labor-saving devices, 332 



Lanz, David, 140 



Larva, 320 



Laveran, 13 



Leaf, food manufactory, 308, 309 



Legumes, 304 



related plants, 304 

 Lenses, 254 



focal lengths, 254 



use in focusing, 255 



uses of, 256, 401 

 Lever, 333, 335 



principle of, 334 

 Lice, 137 

 Light, 51, 238 



artificial, 243 



home use, 241 



necessity for life, 51 



relation to man, 239 



sources of, 238 



sunlight, 242 



Light Continued 



surfaces diffusing, 241 



tungsten, 248 

 Lighting, artificial, 244 



candle, 244 



electricity, 247 



gas, 244 



illustration of, 249 



kerosene, 244 



methods of, 250 

 Lime-sulphur fungicide, 326 

 Lime-sulphur spray, 326 

 Lime-paris green, 326 

 Linen, description of, 228 

 Lists, garden vegetables, insects, and 



prevention and cure, 325 

 Living room, ideal, 279 

 Lungs, capacity of, 63, 64 



give off wastes, 63, 64 



relation to breathing, 60 



Machines, in the home, 332 



law of, 338 



mechanical advantage, 335 



sewing, 340 



washing, 342 

 Magnets, electromagnets, 345, 349 



laws of magnetic poles, 346 



magnetic field, 347 



properties of, 346, 348 

 Magnetism, law of, 347 



magnetize iron bar, 348 

 Malaria, 13 



Manganese dioxide, 361 

 Manson and Warren, 16 

 Map showing tuberculosis districts, 30 

 Marketing, 108 

 Matches, 209 



relation to fires, 183 

 Mechanical advantage, 335 

 Mechanical toys, 385 

 Menu, how to select, 108 



proper, 109 



Metamorphosis, of butterfly, 320 

 Meter, gas, 201 

 Microscope, 394 



Mind, influence on digestion, 104 

 Molds, fruiting bodies, 119 



in the home, 118 



spores, 119 

 Mosquitoes, 14, 135 



anopheles, 14, 135 



