INDEX 



431 



Heat of vaporization, 84 

 Heating buildings, 95 

 Headache, 44, 285 

 Hearing, 303 

 Helix, 260, 261 

 Hemp, 365 

 Hog, 394, 401 

 Home selecting, 405 

 Hookworm, 402 

 Horse, 394 

 Horsepower, 197 

 Hospitals, 287 

 Hot beds, 325 

 House fly, 396 

 Human body, 112 

 Humidity, 158 

 Humus, 313 

 Hydrogen, 135 

 Hygrometer, 158 



Ice, artificial, 169 

 Inclined plane, 186 

 Insects, 378, 385 

 Irrigation, 326 

 Isobars, 158 

 Isotherms, 159 



Japan current, 99, 143 

 Kindling point, 50 



Laudanum, 44 



Law of magnets, 239 



Leaves, 343 



Leclanche cell, 257 



Lenses, 273 



Lenticels, 346 



Lever, 181 



Lichens, 13 



Lifting pump, 214 



Light, 272, 412; artificial, 289 



Lightning, 250; rods, 249 



Lime, 36 



Limestone, 308 



Lime-sulphur, 3/6 



Linseed oil, 365 



Liquids, 65 



Liquid air, 171 



Litmus, 13, 15 



Liver, 116 



Lobsters, 387 



Lodestone, 237 



Machines, 174 



Magnetic, field, 242, 258; poles, 246 



Magnetism, induced, 240 



Magnetizing steel, 245 



Magnets, 237; care of, 244 



Malaria fever, 399 



Mammals, 393 



Man, 404; enemies of, 405 



Manganese dioxide, 47, 263 



Matches, 51 



Material, 64 



Matter, 64; law of, 65; state of, 65 



Mechanical advantage, 179 



Metals, 94, 96 



Meteors, 412 



Meter, 415 



Metric system, 414 



Milk, 117 



Mineral foods, 121 



Molds, 31, 370 



Molecules, 10 



Moon, 408 



Morphine, 44 



Mosquitoes, 398 



Mummies, of fruit, 375 



Mushrooms, 370 



Natural gas, 171, 292 

 Nearsightedness, 283 

 Newton, Sir Isaac, 67 

 Nicotine, 42, 62 

 Nitrogen, 47, 319 

 Nutrients, 114, 122 

 Nutritive ratio, 127 



Ohm, 251 

 Oil, 289, 292, 365 

 Opium, 42, 44 

 Oranges, 350 

 Osmosis, 339 

 Ovary, 347 

 Overshot wheel, 200 

 Ovules, 347 

 Oxidation, 49, 52 

 Oxygen, 47, 48, 49 



Paint, 39 

 Paper, 336 

 Paramecium, 382 

 Parasites, 370 

 Pasteurizing, 34 

 Pear blight, 376 

 Pelton wheel, 201 

 Petroleum, 90 

 Phenolphthalein, 16, 422 

 Phosphorus, 51 



