[sees J 
fo as to extinguifh the flame of a;f er 
wax-taper ; its teft was, by Abbéj<"? 
Fontana’s method, 5993 °.2.89- es 
3.83. 117 
60. It was then expofed to the 
fun, and examined again after a 
quarter of an hour, and found al- 
ready fomewhat corrected ;' for its 
teft was then 1.975. 2.84.5.3.79. 12% 
The jar was again put in the 
ope. zits when, after ee og $e 
to ge rina ily Corea for 
now its teft was 2.01; 2.25; 3.24. 176 
The jar was again replaced in 
the fun ; when it had been expofed 
during three complete hours, the 
air was fo much improved as to be 
better than the common air at the 
time; for its teft was 1. 953: De ee 
2.20 . a 
