PROCEEDINGS OF 



THE ROYAL SOCIETY. 



VOL. LXXIII. 



No. 492. 



CONTENTS. 



PA&E 



On the High. Temperature Standards of the National Physical Laboratory : 

 an account of a Comparison of Platinum Thermometers and Thermo- 

 junctions with the Gras Thermometer. By J. A. Haekee, D.Sc., Fellow 

 of Owens College, Manchester, Assistant at the National Physical 

 Laboratory. Communicated by R. T. G-lazebeook, F.R.S. (Abstract) 217 



The Spectra of Antarian Stars in Relation to the Fluted Spectrum of 

 Titanium. By A. Fowlee, A.R.C.S., F.R.A.S., Assistant Professor of 

 Physics at the Royal College of Science, South Kensington. Com- 

 municated by Professor H. L. Callendae, F.R.S. (Plate 6) . . 219 



The Specific Heats of Metals and the Relation of Specific Heat to Atomic 

 Weight.— Part ILL By W. A. Tilden, D.Sc, F.R.S., Professor of 

 Chemistry in the Royal College of Science, London. (Abstract) . . 226 



Further Researches on the Temperature Classification of Stars. By Sir 



Nobman Lockyee, K.C.B., LL.D., F.R.S. (Plates 7—9) . . .227 



On the Construction of Some Mercury Standards of Resistance, with a 

 Determination of the Temperature Coeflicient of Resistance of Mercury. 

 By F. E. Smith, A.R.C.Sc, Assistant at the National Physical 

 Laboratory. Communicated by R. T. GtLAzebeook, F.R.S. (Abstract) 239 



On Electric Resistance Thermometry at the Temperature of Boiling Hydrogen. 



By Professor James Dewae, M.A., LL.D., F.R.S. (Plate 10) . . 244 



Physical Constants at Low Temperatures. (1) — The Densities of Solid 

 Oxygen, Nitrogen, Hydrogen, etc. By Professor James Dewae, M.A., 

 LL.D., D.Sc, F.R.S 251 



Minutes of Meetings of March 17, 1904, and March 24, 1904 xv 



April 9, 1904. 



Price Three Shillings. 



