Platinum resistance thermometry at high temperatures

II. Thermometers and Methods of Use 152 Methods of measurement; construction of thermometers; heat- ing by measuring current ; calibration of thermometers ; constants of the thermometers.III.Measurement and Reproducibility of Freezing and Melting Points 158 Electric furnaces; furnace manipulation; crucibles; surface oxida- tion; depth of immersion; undercooling; the observations; freezing points of Sn, Cd, Pb, Zn, Sb, Ag, Cu, Al, Ag 3 -Cu 2 and Cu-Cu 2 eutectics; metals from different sources.IV.The Scale of the Platinum Thermometer175 Corrections for thermometers of impure platinum; precision of measurement with platinum thermometer; modification of Calen- dar's formula; other calibration formulae; other methods of calibra- tion at high temperatures.V. Changes in Constants of Thermometers at High Temperatures._ 178 Changes with discontinuous heating; changes during a freezing point determination.VI.Comparison of Resistance and Thermoelectric Scales 182 VII.The Palladium Thermometer 183 VIII.The Boiling Point of Sulphur 184 Variation of S. B. P. with pressure; the S. B. P. tubes; gas and electric heating; superheating; radiation shields; temperature distribution within S. B. P. tube; temperature distribution within radiation shield; on the uncertainty in the accepted value of the S. B. P. IX.General Conclusions 193 X. Appendix: Tables 19 8 XI.