90 ESSAYS AND OBSERVATIONS 



Cold alfo contributes its part, by conden- 

 fingrhe watery particles, which fall down 

 in fnow when the cold is violent ; and, 

 by thefe means, a conftant circulation of 

 moiflure is carried on. 



No fair reafoner can refufe his aflent 

 to this theory, when he thus finds it ma- 

 king a capital branch of the general theo- 

 ry of diirolution,efpoufed by all chymifts. 

 Upon examination, it will be found, that 

 every experiment regarding the diflblu- 

 tion of fait in water, holds equally in the' 

 diffolution of water in air. In fad, that 

 air is a menjlrinim for water, and that 

 water is fufpendedin air by way of difTo* 

 lution, will appear from the following, 

 experiments. Let a tranfparent bottle, 

 containing nothing but air, be well cork- 

 ed, and expofed to the cold of the night. 

 If the cold happen to be confiderable, 

 drops of water will be feen next morning 

 adhering to the infide ot the bottle, efpe- 

 cially in the upper parts, where the cold 

 firfl penetrates. Again, in the heat of 

 fummer, take a tranfparent globe of glafs, 

 in which not a drop of water is villble : 



dipf 



