, Analjfis of the Air. 
greater proportion of air is found in the 
folid than the fluid parts of bodies; may wc 
not with good reafon conclude, that it is very 
inftrumental, as a band of union in thofe 
bodies, Thofe particles (as Sir Ifaac 
Nevuton obferyes) receding from one 
another with the greateft repulfive force, 
and being moft difficultly brought together, 
which upon contaft cohere moft ftrongly. 
qu, 31/* And if the attradion of cohefion 
of an im-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 IJaac Newton calculates from 
the infledion of the rays of light, that the ; 
attrading force of particles, near the point of ^ 
contad, is 10000,0000,0000,0000 greater 
than the force of gravity. 
Sulphur in a quiefeent fix’d ftate in a large 
body does not abforb the elaftick air, for 
a hard roll of Brimftone docs not abforb 1 
air: But when fome of that Brimftone, by • | 
being powdered and mixt with filings of 
-iron, is fet a fermenting, and thereby reduced 
into very minute particles, whofe attradion 
increaics, as their fize decreafes 5 then it 
abforbs • 
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