On Evaporation. 585 
the supposition of 35 grains loss per minute 
from the vessel of 33 inches in diameter ; 
the second, 45 and the third 55 grains per 
Minute, 
TABLE 
Shewing the force of vapour, and the full evaporating 
force of every degree. of temperature from 20° to 85°, ex- 
pressed in grains of water that would be raised per minute 
from a vessel of six inches in diameter, supposing there 
were no vapour already in the atmosphere.. 
Seeapeapear: |) Force. of Yap. Evaporating Force in Grains. 
ai2° aoe 120 }54 189 
20° BD 02 .67 82 
21 134 oD Ae 69 «53 
22 139 56 i ae ee 
23 144 58 73 91 
24 »150 -60 77 O4 
25 156 62 79 297 
26 162° -65 .82 1, 02 
27 “£168 .67 186 1, 05 
28 ly 70 30 1. 10 
29 ~.180 7 i93 1.83 
$0 «186 74 95 Pag 7 
31 193 77 99 1}. 21 
32 «200 80 1. 03 1. 26 
33 +207 83 1. O7 i oe 
