with Boiling Point of Sulph 



lur. 



533 



stant volume from an initial pressure of 760 ram and (column 3) 

 in terms of the thermodynamic scale. These values replace 

 the corresponding temperatures published in our papers to 

 which reference has been made. 



Table VI.— Summarized Table. 





Temperature 





Point 







Notes 





Const, vol. 



Thermo- 







p o = \ at. 



dynamic 





Benzophenone (Kahlbaum) 



305-85 



305-9 



Transferred by platin- 



boiling pt. at ?60 mm 







rhodium and copper-con- 

 stantan thermoelements. 



Cadmium, melting pt. 



320-8 



320-9 



Interpolated. 



Zinc, melting pt. 



419-3 



419-4 



Transferred by thermo- 

 elements. 



Sulphur, boiling pt. at 



444-40 



444-55 



Direct. 



760 mm 









Antimony (Kahlbaum), 



629-8 



630-0 



Transferred by thermo- 



melting pt. 







elements. 



Aluminum, melting point 



658-5 



658-7 



Interpolated. 



Finally a comparative table is added showing in terms of the 

 same (thermodynamic) scale a comparison of our results with 

 those obtained by Holborn and Henning in the latest work 

 published from the Reichsanstalt. 



Table VII. — Comparative Table. 

 Thermodynamic Scale. 



Point 



Benzophenpne 

 Cadmium 

 Zinc 

 Sulphur 



Antimony 



Holborn and Hen- 

 ning 1911 



305*9 

 320-9 

 419-4 

 444-51 

 Holborn and 

 630-6 



Day 



Day and Sosman 

 1912 



305-9 

 320-9 

 419-5 

 444-55 



630-0 



Geophysical Laboratory, 



Carnegie Institution of Washington, 

 March, 1912. 



Am. Jour. Sci.— Fourth Series, Vol. XXXIII, No. 198.— June, 1912. 

 35 



