360 RELATIVE ATTRACTIONS OF 
anhydrous acid in the 59 grains remaining in the 
dish, being nearly 26.78. 
In order to understand the state of the atmos- . 
phere during the experiment, it is necessary to 
appeal to the register of the temperature, and 
vapour point, of which the following is a copy. 
1837.| TEMPERATURE. VAPOUR POINT. 
Morn. ) Noon. | Night. | Morn. . | Night. 
The annexed table shows the evaporating force 
of the atmosphere, or the affinity of space for 
vapour, as ascertained by deducting the force of 
vapour at the temperature of the vapour point 
from its force at the temperature of the atmos- 
phere; the forces of vapour at the respective 
temperatures being taken from the table in the 
second volume of Dr. Dalton’s New System of 
Chemistry ; and which, as I have frequently to 
refer to it, I have copied into a subsequent part 
of this paper. 
