Index 



321 



Dalton's Law, 154, 156 



DanieU cell, 283 



Decametre, 3 



Decantation, 277 



Decay, 244 



Decimal system of numeration, 3 



Decimetre, 3 



Definitions, function of, 81 



Deflagrating spoon, 210 



Degradation of energy, 202, 261 



Density, definition of, 64 



Density, distinction from specific 

 gravity, 65; flask, 67; of a 

 gas, 63 ; of liquids, 66 



Diffusion, 78; of gases, 74, in 

 atmosphere, 242 ; of liquids, 75 ; 

 of solids, 76; through porous 

 media, 79 



Distillation of water, 266 



Distilled water, action on glass, 

 267; properties of, 267 



Dividers, use of, 13 



Downward displacement, collec- 

 tion by, 289 



Dry steam, 172 



Dust in air, 241 



Ebullition, 144 



Electrical energy, transformation 

 of, 285 



Electrode, 285 



Electrolysis, 285 



Electrolyte, 285 



Element, 224 



Elements, classification of, 307 



Endothermic reactions, 261 



Energy, 121; chemical, 261; con- 

 vertibility of, 124, 201, 261, 

 290; degradation of, 202, 261; 

 examples of kinetic, 123, po- 

 tential, 122; forms of, 124; in- 

 destructibility of, 123 ; kinetic, 

 122; potential, 122 



Entry of experiments, 8, 12 



Equilibrium, neutral, 115; rela- 

 tion to position of centre of 

 gravity, 115; stable, 114; un- 

 stable, 114 



Ether, heat absorbed during va- 

 porisation, 173 ; nature of, 191 ; 

 precautions in using, 173; 

 wave motion in, 192 



H. D. s. 



Ether-waves, magnitude of, 192 



Eudiometer, 299 



Evaporation, 144, 235 ; to dryness, 



265 



Exothermic reactions, 261 

 Expansion by heat, cubical, 126; 



linear, 125; of gases, 128; of 



liquids, 127 

 Explosion, nature of, 290 



Fahrenheit scale of temperature, 

 147 



Ferric oxide, 248 



Filter paper, method of folding, 

 275 



Filtering materials, 275 



Filtration, 275 



Fire as ventilating agent, 208 



Fish, respiration of, 248, 249 



Fletcher burner, 281 



Fluid pressure, calculation of, 85; 

 equality in all directions, 87; 

 experimental inferences, 86 ; 

 nature of, 83 



Fluids, 73 



Foot-pound, 119 



Force, definition of, 44; due to 

 expansion by heat, 133; of 

 gravity, 44, 45, measurement 

 of, 45, relation to mass, 46 



Formula, chemical, 262 



Freezing mixtures, 180; use of, 

 166 



Freezing-point, effect of dissolved 

 substances on, 180 



Fuels, constituents of, 226; pro- 

 ducts of combustion of, 226 



Fulcrum, 49 



Fusion, heat absorbed during, 

 165 



Gaseous Combination, Law of, 302 



Gases, action of heat on, 204; 

 diffusion of, 74; dissolved in 

 water, 244, 247, importance of, 

 243, 248; expansion by heat, 

 128; properties of, 73; re- 

 lation of volume to tempera- 

 ture, 152; specific gravity of, 

 177 



Gay-Lussac's Law, 302 



Glauber's salt, 273 



21 



