416 Messrs. Nichols and Snow on the Influence of 



Table VI. — Eeflecting-power of Eed Lead in terms of that 

 of the ideal White. 



Wave-lengths. 



Intensities 

 at 25° O. 



Intensities 

 at 145° C. 



Intensities 

 at 495° C. 



•7530 



0-893 



0-757 



0-414 



■6685 



0-685 



0-569 



0-132 



•6080 



0-451 



0153 



0061 



•5570 



0-076 



0-052 



0052 



•4920 



0-065 



0-048 



0-058 



•4500 



0-036 



0-034 



0034 



Table VII. — Eeflecting-power of the Sulphide of Mercury 

 (Hg 2 S) in terms of that of the ideal White. Temperatures, 

 25° and 220° C. 



Wave-lengths. 



Intensities at 



25° O. 



Intensities at 

 220° C. 



•7530 



0-853 



0-333 



•6685 



0-710 



0-237 



•6370 



0-465 



0059 



•5820 



0-038 



0-021 



•5570 



0-030 





•4920 



0-025 



0-017 



•4340 



0019 



0-026 



Table VIII, — Eeflecting-power of Mercuric Oxide (HgO) 

 in terms of that of the ideal White. Temperatures, 25°, 

 313°, and 523° C. 



Wave-lengths. 



Intensities 



Intensities 



Intensities 



at 25° 0. 



at 313° C. 



at 523° C. 



•7530 



0-849 



0-612 



0-266 



•6685 



0-678 



0-221 



0161 



•6080 



0-381 



0-112 



0-104 



•5570 



0-119 



0083 



0-082 



•4920 



0-093 



0080 



0093 



•4685 



0-093 







•4500 



0-095 



0-101 



0111 



•4250 



0-055 



0-063 



0-063 



