546 



INDEX 



Food overcooked, 221 



preserving of, 237 



perfect, 194 



table, 208 



to be avoided, 193 



values vary, 189 



why cooked, 221 

 Fountain, drinking 279, 280, 281, 282, 



283 

 Fly, house, 301 



breeding place of, 301 

 Friction, 499 

 Fruit mold, 314 



preserving, 40 

 Frost, 21 



black, 23 



hoar, 23 



on hillside, 22 

 Fuel, alcohol as, 164 



comparison of, 167 



coal as, 164 



gas as, 161 



heating value of, 166 



peat as, 164 



protein, 198 

 Fumigation, 321 

 Fundamental and overtone, 425 

 Fuses, 401 



Gas, absorption of, 446 

 action of wire gauze, 142 

 as a fuel, 141 

 acetylene, 162 

 air vitiated by, 181 

 bills, 153 



burners in stoves, 159 

 connections, 153, 154 

 consumed in appliances, 151 

 explosions of, 142 

 engine, 163 

 flames following, 144 

 lights diagram, 152 

 measurement of, 148 

 meter, 148 



Gas, meter index, 150 



natural, 161 



in mines, 142 



producer, 146 



producer diagram, 147 



water, 161 

 Gasoline, 162 



danger in use of, 144 



engines, 162 



use of, 511 



vapor, 162 

 Gemini, 483 

 Germs, cause disease, 291 



body kills, 291 



and disease, 289 



enter body, 291 



multiplication of, 291 

 Germicidal substance, 292 

 Glasses, adjustment of, 356 



object of wearing, 350 

 Glucose, 184 

 Gravity, 448 



relation to Up and Down, 448 

 Gravitation, 449 



Hemoglobin, 184 



oxyhemoglobin, 186 

 Hail, 35 



stones, 35 

 Hardness, 446 

 Harp, 426 

 Hercules, 487 

 Headaches, cause of, 249 



medicines for, 248 



Bromo Seltzer, 249 

 Heat, air carries, 102 



amount required, 166 



effects of, 112 



for rooms, 166 



hot water, 109 



measuring of, 119 

 latent, 128 



in cooking, 168 



of sun, 87 



