PLATINUM SUEFACE AT HKIH TEMPEEATURES. 
249 
Table ITT. —Emissivity in Oxygen [continued). 
37'S' atmospheres at 16° G. 
71-6 atmospheres at 16° C. 
A 
115-9 atmospheres at 16° C. 
Temperature 9 
in degrees 
Centigrade. 
Emissivity in 
C.G.S. units. 
Temperature 9 
in degrees 
Centigrade. 
Emissivity in 
C.G.S. units. 
Temperature 9 
in degrees 
Centigrade. 
Emissivity in 
C.G.S. units. 
182-5 
0-003777 
132-1 
0-004877 ‘ 
96-2 
0-006370 
395 • 9 
0-004660 
244-9 
0-005631 
194-6 
0-007100 
563-8 
0-005315 
429-2 
0-006512 
337-7 
0-008124 
845 • 1 
0-006329 
639-3 
0-007403 
462-0 
0-008687 
1075-8 
0-007450 
820-4 
0-008218 
6.38-0 
0-009452 
1091-4 
0-009561 
867-0 
0-01056 
1064-2 
0-01176 
Table IV.—Emissivity in Hydrogen. 
0-117 atmosphere at 16° C. 
0-971 atmosphere at 16° C. 
6-9 atmospheres at 16° C. 
Temperature .9 
in degrees 
Centigrade. 
Emissivity in 
C.G.S. units. 
Temperature -9 
in degrees 
Centigrade. 
Emissivity in 
C.G.S. units. ' 
Temperature .9 
in degrees 
Centigrade. 
Emissivity in 
C.G.S. units. 
189-8 
0-003062 
168-8 
0-003476 
141-8 
0-004899 
523-8 
0-004158 
508 - 9 
0-004920 
229 - 8 
0-006100 
681-1 
0-005098 
692 - 5 
0-005818 : 
644-7 
0-008038 
690-1 
0-005032 
929-9 
0-006675 
831-2 
0-008738 
775-7 
0-005372 
989-4 
0-007288 
952-2 
0-009417 
903 - 7 
0-005854 
619-8 
0-005150 
450-2 
0-007425 
367-3 
0-004180 
233-3 
0-0060.30 
268 ■ 7 
0-003762 
162-2 
0-003365 
23-3 atmospheres at 16° C. 
66-9 atmospheres at 16° C. 
114-0 atmospheres at 16° C. 
Temperature .9 
in degrees 
Centigrade. 
Emissmtj^ in 
C.G.S. units. 
Temperature -9 
in degrees 
Centigrade. 
Emissivity in 
C.G.S. units. 
Temperature .9 
in degrees 
Centigrade. 
Emissivity in 
C.G.S. units. 
82-5 
0-007380 
136-1 
0-01203 
161-1 
0-01533 1 
143-9 
0-008369 
257-8 
0-01396 
404-7 
0-01920 
355 - 6 
0-01032 
402-1 
0-01554 
620-4 
0-02135 
594-1 
0-01194 
521-6 
0-01670 
791-1 
0-02268 
740-0 
0-01278 
669 - 8 
0-01816 
950 - 9 
0-02454 
941-4 
0-01405 
275-8 
0-01742 
79-8 
0-007338 
165-8 
0-01558 
287-9 
0-009841 
89-8 
0-01350 
508 ■ 1 
0-01149 
VOL. cxcvii.—A. 2 K 
