C 294 3 
each great mafs, mingling with its atmofphere, may 
be diftributed, in certain proportions, among all the 
reft. So that there is probably no branch of phyfics, 
in which human difcovery, in its utmoft extent, 
rauft always bear fo fmall a proportion to what will 
ftill remain unknown. 
TABLE I. 
eqjjation of the boiling point. 
Barometer. 
Equation. 
Difference. 
3 r >° 
+ M7 
0,78 
3 °>S 
+ °>79 
07.9 
30,0 
0,00 
0,80 
29 >5 
— 0,80 
0,82 
29,0 
— 1,62 
6,83 
28,5 
— 2 AS 
00 
d 
O 
rd 
— 3 » 3 1 
0,86 
2 hS 
— 4>i 6 
0,88 
27,0 
— 5>°4 
The numbers in the firft column to the left exprefs heights of the 
quickfilver in the Barometer, in Englifh inches and decimal parts. The 
fecond column gives the Equation to be applied, according to the fign 
prefixed, to 212 0 of Bird’s Fahrenheit, to find the true boiling point, for 
every fuch ftateof the barometer. The heights of the barometer decrease 
by| inches from 31 to 27 inches. The boiling point, forall intermediate 
Hates of the barometer, may be found, with a very fufficient accuracy, by 
taking proportional parts. For which purpofe, the differences of tbe 
equations are given in the third column. 
2 
TABLE 
