378 



INDEX 



Faraday, 168 



Feathers, 276, 297 



Ferments, and fermentation, 6, 



i7S 



Fireless cooker, 145 

 Fires; 235-236, 239, 254-256 

 Flame, 17-18, 235-236 

 Flies, 57-60 

 Flowers, 265-266, 315 

 Food inspection, 47-49, 51 

 Foods, classes of, 27, 222-224 



quantity needed, 219-220 

 Food stuffs, 45-48, 209, 220 



adulteration of, 48, 226 



composition, table of, 225 

 Forces, 151, 155, 157, 160, 163 

 Forests, 254-258 

 Friction, 154 

 Frost, 92, 94 

 Fruit, 262, 267 

 Fuel, 214-217 

 Fungi, 322-325 

 Fusion, heat of, 95-96 



Garbage, 61 

 Garden, 241-246 

 Gases, 86, 98-99 



liquefaction of, 116-118 



pressure of, 117-118 



temperature due to compression 

 and expansion of, 90, 117- 

 118, 125, 138 

 Gasoline, 177, 235 

 Gluten, 300, 327-328 

 Gravity, and gravitation, 155-158, 



338 



Growth, 64, 71, 83, 302, 315-316 

 Gypsum, 195 



II 



Habit formation, 74-76, 80-84, 219, 



295 



Hand, structure and uses, 2-3 

 Headache powders, 77 

 Health, i, 29, 31-36, 42-43, 49, 5$, 



61-69, 72-74, 208-209, 219- 



221, 223-224, 237, 241, 293 



in relation to weather, 113, 133- 



137 



Heat, 116-117, I43-I47 

 and electricity, 161, 218 

 as molecular energy, 143-144, 161 

 conduction and convection of, 



I43-I4S 

 liberated by condensation or 



compression, 95, 117 

 measurement of, 94-95 

 of solution, 99 

 of vaporization, 95-96 

 radiation of, 144-145, 147 

 reflection of, 149 

 solar heating, 112, 149, 35i~352, 



367 



specific heat, 87 

 Heat equator, 131 

 Heavens, the, 364-369 

 "Highs" and "lows," 129-131, 137- 



140 

 direction of their movements, 



129-131, 138-140 

 Homes and their surroundings, 206, 



214-215, 245-246, 283 

 heating and lighting, 214-215, 



218-219 

 rooms and their furnishings, 



206-208 



Horizon, 147-149, 349~35* 

 Horse, 304-307 

 Humidity, 20, 93-94, 136-137 

 Hygiene, i, 25, 32, 35-36, 42-43, 65- 



69, 72-79 

 Hypothesis, 98, 101 



