484 Dr. Herschei/s Experiments on the solar, and 



l^ist Experiment. 



Fire f Crown glass."! Both sides of each rubbed on 



' \ Coach glass. J emery. 



o' 66\ 66% 



5 8 3 | 68±... i7:i| = ,103 



These glasses stop 897 scattered rays of fire-heat. 



142^ Experiment. 



Fire. The four glasses of the two preceding experiments put 



together. 



o' 66 66 



5 80 67I... 14: if = ,098 



These four glasses stop 902 scattered rays of fire-heat. 



1436? Experiment. 



Fire. Olive colour, burnt into glass. 



o' 63$ 6o,\ 



5 %! 67^ ... 22 : 3f . cor. — £' = ,151 



This glass stops 849 scattered rays of fire-heat. 



144//J Experiment. 



Fire. Paper. 



o' 66\ 66± 



5 8 3 i 68... .17: ^ = ,0882 



This substance stops 912 scattered rays of fire-heat; it was 

 turned a little yellow by the exposure. 



lQgtb Experiment. 



Fire. Linen. 



o' 63% 63I 



5 84^ 67 ... 21 : 3^ . cor. — l f = ,0897 



This substance stops 910 scattered rays of fire-heat. 



