Schedule of Classification 



1450 Expansion of Gases and 

 Unsaturated Vapours : 

 Pressure - Volume - Tem- 

 perature Relations. (See 

 also Chemistry 7160.) 174-180 

 Boyle's (or Mariotte's) Law 174-175 

 Change of Temperature 

 accompanying Change of 

 Volume ... ... ... 175 



Characteristic Equation 175-176 

 Compressibility of Gases ... 176 



Specified Gases 176 



Expansion of Gases 177-178 



Specified Gases ... ... 178 



Manometers. (See also 



0835.) 179 



Calorimetry and Specific Heat. 



1600 General. Units of Heat 180-181 

 Units of Heat ... 180-181 



1610 Calorimetric Methods 181-182 



Calorimeters ... 181-182 



1620 Specific Heats of Solids and 

 Liquids. (See also 

 Chemistry 7220.) 182-185 

 Measurement ... ... 182 



Specific Heats of Liquids 183-184 

 Specified Liquids 183-184 



Specific Heats of Solids 184-185 

 Specified Solids. . . 184-185 



1640 Specific Heats of Gases and 

 Vapours. .(See also 

 Chemistry 7220.) 185-187 



Ratio of Specific Heats ... 186 

 Measurement ... ... 186 



Specific Heats of Gases 186-187 



Specified Gases 187 



Specific Heats of Vapours 187 

 Specified Vapours ... 187 

 1660 Chemical Constitution and 

 Specific Heat (Dulong 

 and Petit Law, etc.). 

 (See also Chemistry 



7220.) 187-188 



Atomic Heat ... 187-188 



Dulong and Petit law ... 188 



1670 Heats of Fusion ... 188-189 



Specified Substances 188-189 



1680 Heats of Vaporisation 189-190 



Specified Substances 189-190 



1690 Heats of Dissolution. (See 



also Chemistry 7230.) 190 



1695 Heats of Transformation ... 190 



Recalescence ... ... 190 



Phenomena of Change of State. 

 1800 General 190-191 



ing solids, Pouillefs Phe- 

 nomenon 191 



1810 Fusion and Solidification 

 (General). (See also 

 Chemistry 7205.) 191-196 



Freezing 192 



Freezing Point 192 



Ice 193-194 



Melting Points ... 194-195 



Volume change on Fusion 



or Solidification 195-196 



Specified Substances 195-196 

 1840 Saturated Vapours. Pres- 

 sure ; Boiling - Points. 

 Evaporation. (See also 

 Chemistry 7210; Meteor- 

 ology 1050.) ... 196-205 



Boiling-Points 196 



Evaporation ... 197-199 



Measurement ... ... 198 



Pressure 200-201 



Measurement ... ... 200 



Specified Vapours ... 201 

 Water Vapour ... 201 

 Pressure Temperature Re- 

 lation for Saturated 

 Vapours ... 201-202 



Water Vapour ... 202 

 Spheroidal State ... 202-203 



Steam 204 



Vapours 204-205 



1850 Vapour Densities. (See also 

 0810 and Chemistry 



7115.) 205-206 



Measurement ... ... 205 



Specified Substances ... 206 



1860 Ebullition 206-207 



Steam 207 



1870 Liquefaction of Gases and 



Gaseous Mixtures 207-209 



Specified Gases 209 



1880 Continuity of State. Critical 

 State, Critical Point, etc. 

 Characteristic Equa- 

 tions. (See also Chem- 

 istry 7000, 7212.) 209-213 

 Characteristic Equations 209-210 

 Continuity of State ... 210 

 Critical constants ... ... 210 



Critical Point ... 210-211 



Critical State 211 



Critical Temperatures 211-212 

 1885 Corresponding States ... 213 

 Law of Corresponding 



States 213 



1887 Equilibrium in Coexistent 

 Phases. Phase Rule (Gene- 

 ral). 213-214 



1890 Hygroscopy and Hygrometry. 

 (See also Meteorology 

 0270, 1000-1060.) 214-217 



Hygrometry ... 214-216 



Hygrometers ... 215-216 



