324 



INDEX 



Fusion, latent heat of, 153 



G," value of, 62 



Gain of weight during burning, 

 227, 228 



Galvanoscope, the, 198, 199 



Gas, hydrochloric acid, composi- 

 tion of, 263, 264; formula for, 

 270, 271 ; marsh, 294, 295 ; pres- 

 sure of a, relation between 

 volume and, 112114 ; salt, 262, 

 263 



Gases, 15 18 ; are easily com- 

 pressible, 15 ; relative density 

 of, 102 



General characters of phosphorus, 

 278, 279 



Graduating the thermometer, 139 



Graphite, blacklead or, 285 



Gravitation, 45 47 



Gravity, attraction of, 62 ; centre 

 of, 81 88 ; of a quadrilateral, 

 85 ; of a triangular plate, 84, 

 85 ; experimental methods of 

 determining, 8284 ; parallel 

 forces and, 7490 ; other centres 

 of, 85 



Grove's cell, 192, 193 



HARD and soft waters, 244 



Hardness, of water, 291, 292; 

 temporarv and permanent, 244, 

 245, 291/292 ; solids possess, 10 



Hare's apparatus for determina- 

 tion of relative densities, 101 



Heat, 133 159 ; and light, radiant, 

 energy of, 125 ; and temperature, 

 distinction between, 142 144 ; 

 as a form of energy, 123 125 ; 

 conduction of, 145 148 ; good 

 and bad, conductors of, 145 

 148 ; effects of, 133135 ; upon 

 sulphur, 249 ; latent, of fusion, 

 153 ; of vaporisation, 153 155 ; 

 measurement of quantities of, 

 144, 145 



Heating by convection, applica- 

 tions of, 148, 149 



Hot and cold bodies, 133 



Hydraulic press, 13, 14 



Hydrochloric acid gas, composi- 

 tion of, 263, 264 ; formula for, 

 270, 271 



Hydrogen, compounds of carbon 



with, 294, 295 ; phosphoretted, 

 phosphine or, 281, 282; phos- 

 phorus and, compounds of, 280 

 282 ; preparation and properties 

 of, 236 239 ; production of 

 oxide of, 238, 239 ; proportions 

 of oxygen and, in water, 239, 

 240 ; sulphuretted, 256, 258 ; 

 formulae for sulphur dioxide and 

 sulphuretted, 272, 273 ; quanti- 

 tative composition of sulphur- 

 etted, 258 



Hydrostatic method of determining 

 relative densities, 97, 98 



Hydroxides, reactions of, with 

 acids, 301, 302 



IMAGE, formation of an, by a plane 



mirror, 166 



Inertia, 61, 62 ; of matter, 6 

 Instruments for measuring time, 



35, 36 



KINETIC energy, 121, 122 ; mea- 

 surement of, 122 



LATENT heat of fusion, 15$ ; 

 vaporisation, 153 155 



Law, Avogadro's, 270 ; Boyle's, 

 114, 115; application of, to the 

 atmosphere, 115 : atmospheric 

 pressure and, 106 117 ; New- 

 ton's first, of motion, 60, 61 



Laws of regular reflection, 165 

 166 



Leclanche's cell, 193 



Length, measurement of, 21 24 ; 

 relation between British and 

 metric units of, 23, 24 ; units of, 

 area and volume, 21 33 



Lens, refraction through a, 175 



Level, liquids find their, 11, 12 



Light, 160183 ; analysis of, by 

 a prism, 176 178; path of a 

 ray of, through a prism, 174, 

 175 ; radiant heat and, energy 

 of, 125 ; reflection of, 163166 ; 

 refraction of, 168176 ; regular 

 reflection of, 163166 ; travels 

 in straight lines, 162, 163; 

 white, recomposition of, 179, 

 180 



Lime, 286, 288 ; and carbon di- 

 oxide. 288, 289 



