Schedule of Classification 



1900 Vaporisation of Solids. Sub- 

 limation ... ... ... 217 



1920 Solutions and Liquid Mix- 

 tures : Melting-Point, 

 Boiling -Point, Vapour 

 Pressure, etc. ... 217-220 



Freezing Point of Solutions 



<Mid Liquid Mixtures 217-219 

 Determination ... ... 218 



Specified Substances 218-219 

 Vapour Pressure of Liquid 

 Mixtures ... ... 219 



Vapour Pressure of Solu- 

 tions 219-220 



1925 Solutions: Other Thermal 

 Properties (Latent Heat). 



(See 1690.) 220 



1930 Dissociation. Allotropic 



Transformations ... 220 



1940 Retardation Phenomena 

 (Supervision, Super- 

 heating, Supersatura- 



tion) 221-223 



Superfusion ... ... 221 



Specified Substances ... 221 

 Superheating ... ... 221 



Supersaturation ... 221-223 



Supersaturated Solu- 

 tions ... 221-223 

 Specified Substances 222-223 

 Thermal Conduction and Convection. 

 2000 General. (See also Chem- 

 istry 7240.) ... 223-224 

 Conduction ... ... 223 



2010 Mathematical Analysis and 



Applications (Fourier). 224-226 

 Isothermal Surfaces ... 225 

 Solutions for Special 



Figures 226 



2020 Solids, Conductance of 226-230 



Supposed Production of 



Heat in Solid Bodies by 



Sudden Cooling ... 227 



Specified Solids ... 227-230 



2030 Liquids, Conductance of 230-231 



Conduction in Liquids 230-231 



Specified Liquids ... 231 



2035 Gases, Conductance of ... 231 



Conduction in Gases ... 231 



Specified Oases 231 



2040 Convection. Laws of Cool- 

 ing. (See 4210.) 232-234 

 Convection ... 232-233 



Dust Figures 232 



Cooling ' 233-234 



Thermodynamics. 



2400 General. (Virial see 0200.) 234-238 

 Heat, Nature of ... 235-237 



Mechanical or Dynam- 

 ical Theory ... 235-236 



2405 The First Law. Conserva- 

 tion of Energy. Different 

 Forms of Energy 238-239 



Conservation of Energy 238 



2410 Mechanical Equivalent of 



Heat 239-242 



Determination of Mechan- 

 ical Equivalent... 240-241 

 2415 The Second Law. Carnot 

 Cycles. Entropy and 

 Available Energy. Irre- 

 versible Phenomena. 

 Free Energy and Ther- 

 modynamic Potentials 242-246 

 The Second Law... 244-245 

 2425 Absolute Temperature and 



its Determination ... 246 



2435 Special Thermodynamic Re- 



lations 246-249 



2445 Thermodynamic Surfaces, 



Models, etc 249 



2455 Thermodynamics of Single 



Substances ... 249-250 



2457 Thermodynamics of Solu- 

 tions and Mixtures 250-252 



Mixtures 251 



Specified Mixtures ... 251 



Solutions 251-252 



2465 Thermodynamics of Systems 

 with External and Capil- 

 lary Forces 252 



2472 Thermodynamics of Chemi- 

 cal Processes 252 



2475 Thermodynamics of Electro- 

 chemical Processes ... 252 

 2490 Theory of Heat Engines. 

 (See also Mechanics 



0430.) 253-272 



Boilers 253-255 



Engines 256-264 



Gas Engines 257 



Hot Air Engines ... 258 



Steam Engines... 258-264 



Marine Engines 261-262 



Indicators ' ... 265-266 



Locomotives ... 266-268 



Motors 268 



Safety- Valves ... ... 269 



Steam 270-271 



Turbines 272 



2495 Refrigerators. (Seealso 1012.) 272-273 



LIGHT AND INVISIBLE 



RADIATION. 

 2990 General. (See also 3400, 



6600.) 273-274 



Undutatory Theory 273-274 



Geometrical Optics. 



3000 General 274-275 



3010 Photometry. Units of Light. 



Brightness. Optical 



