



Anahjfis of the Air. toy 



depths, down to the greateft depth that a 

 line will reach, thereby to difcover, whe^ 

 ther or how much the fpring of the air is 

 difturbed or condenfed, not only by the 

 <*reat preffure of the incumbent water, but 

 alfo by its coldnefs at great depths ; and in 

 what proportion, at different known depth?, 

 and in different lengths of time , that an al- 

 lowance may accordingly be made for it 

 at unfathomable depths. 



This gage will alfo readily fliew the de- 

 rees of compreilion in the condenfing en* 



ii 





gine. 



But to return to the fubject of the two laft 

 Experiments, which prove the elafticity of 

 this new generated air 5 which elafticity is 

 fuppofed to confift in the active aerial par- 

 ticles repelling each other with a force, 

 which is reciprocally proportional to their 

 diltances. That illuftrious Philofopher, Sir 

 I/aac Newt on t in accounting how air and 

 vapour is produced, Opticks guer. 31. fays, 

 The particles when they are fhaken off 

 from bodies by heat or fermentation fo 

 loon as they are beyond the reach of the 

 attraction of the body receding from it, 

 as alfo from one another, with great 



" ftrength 



<< 



<c 



it 



l( 



*t 



I 



f 









