A PLATIKUM SURFACE AT HIGH TEMPKBATUBES. 



519 



TABLE Ills. Emissivity in Dry Air at Atmospheric Pressure. (See fig. 2.) 



TABLE IV. Emissivity in Air at Atmospheric Pressure satm'ated with moisture. 



(See fig. 2.) 



TABLE V. Emissivity in Dry Air at 1 centim. Pressure. (See fig. 2.) 



TABLE VI. Emissivity in Dry Hydrogen at Three Atmospheres. (See fig. 3.) 



