INDEX OF SUBJECTS. 



The numbers refer to pages. 



A. Assumption A (of Burbury), see Molecular 



chaos 

 Adiabatic motion of a gas, 171, 282 



equilibrium of atmosphere, 310 

 Aerostatics, 309 

 Aggregation of molecules, 326 

 Arc, emission of light by electric, 208, 209 

 Assumption A (of Burbury), see Molecular chaos 

 ,, of molecular chaos, see Molecular 



chaos 



Atmosphere, constitution of earth's, 315 

 ,, dissipation of earth's, 318 



general theory of planetary, 309 



Avogadro, constant of, 6 



law of, 111, 120; deviations from 



law, 120, 331 



Boiling point, theory of, 132, 330 



,, numerical values, 344 



Boundary, effect of boundary on law of dis- 

 tribution, 25 

 ,, pressure at boundary influenced by 



cohesion, 117, 125 

 Boyle's Law, 107, 112, 145 



,, deviations from 121, 331 



Calorimetry of a conservative gas, 169 



,, of a non-conservative gas, 210 



of a gas in a state of aggregation, 



333 

 Carbon-dioxide Isothermals, 134 



,, Specific heats, 334 



Carnot's Law (C P -C V ), 170 

 Chaos, molecular, see Molecular chaos 

 Charles' Law, 112 



Chemical affinity, magnitude of, 336 

 Chlorine, variation of density of, 333 

 Cohesion in gases, 64, 326, 332 



,, Van der Waals' treatment of, 117, 



124, 332 



in water, magnitude of forces of, 

 343 



Collisions between elastic spheres, 15 

 between loaded spheres, 96 

 ,, between diatomic molecules, 307 

 ,, between molecules with law jt/r 5 , 284 

 ,, total number of, 31 

 ,, number with given relative velocity, 



31 

 ,, frequency of, in mixture of gases, 



229 

 ,, arbitrary standard in definition of, 



61, 288 



,, arbitrariness corrected by " persist- 

 ence of velocities," 241 

 Conduction of Heat, see Heat 

 Conductive equilibrium in atmosphere, 309, 



312 



Continuity of path. Maxwell's assumption, 

 82 ; relation to assumption of 

 molecular chaos, 91 

 of state, 114, 131, 329 

 hydrodynamical equation of, 151 

 Convection of Heat, see Heat 

 Convective equilibrium of atmosphere, 310 

 Correlation between velocity and positional 



coordinates : 

 Absence of correlation assumed in 



statistical method, 52 

 ,, Eesult disputed by Burbury, 52 



Proof of result, 58 



,, between components of velocity: 

 ,, Absence of correlation assumed 



by Maxwell, 51 

 Proof of result, 28 



,, between velocity of molecules and 



period of light emitted, 207 

 Critical point, 141, 330 



temperature, 131, 141, 331 



Dalton's Law Pressure in a mixture of gases, 



108 



,, deviations from, 121 

 Planetary atmospheres, 310 



