300 Analyfts of the Air. 



greater proportion of air is found in the 

 folid than the fluid parts of bodies; may we 

 not with good reafon conclude, that it is very 

 inftrumental, as a band of union in thofe 

 bodies, " Thofe particles (as Sir Ifaac 

 Nezvton obferves) cc receding from one 

 " another with the greateft repulfive force, 

 €i and being mod difficultly brought together, 

 iC which upon contad cohere mod: ftrongly. 

 qu. si." And if the attradion of cohefion 

 of an un-elaftick air particle be proportion- 

 able to its repulfive force in an elaftick ftate > 

 then fince its elaftick force is found to be 

 fo vaftly great, fo muft that of its cohefion 

 be alfo. Sir Ifaac Newton calculates from 

 the inflexion of the rays of light, that the 

 attrading force of particles, near the point of 

 contad, is 1 0000,0000^0000,0000 greater 

 than the force of gravity. 



Sulphur in a quiefcent fix'd ftate in a large 

 body does not abforb the elaftick air, for 

 a hard roll of Bhmftone does not abforb 

 air : But when fome of that Brimftone, by 

 being powdered and mixt with filings of 

 Iron y is fet a fermenting, and thereby reduced 

 into very minute particles, whofe attradion 

 increafes, as their fize decreafes* then k 



abforb§ 



