( 7 ) 
Height that the Air about them is of the fame fpeci. 
nek Gravity with themfelves. — 
produced by the Separation of the Parti- 
cles of Fire from thofe of Water, which laft bein? then 
reftored to their former fpecifick Gravity, can no longer 
be fuftained by the Air, but muft fall in Drops. Sed 
Ntewentyt’s Religious Philofopher. ContemplatioH 
I 9 * rrom Se(fl. xiii. to Sed:. xxv. 
Now this is liable to feveral Objedions, FirJ, It is 
built upon a Suppofition that Fire is a particular Sub- 
ftance, or diftinft Element, which has never yet been 
prov’d by convincing Experiments and fufficient Obfer- 
vations i and which the Reverend Mr. Hales has in his 
late excellent Book Vegetable Staticks Ihewn to be 
M ill grounded^ Opinion, making it very plain, that in 
Chymical Operations thofe Bodies which had been 
thought to become heavier by Particles of Fire adhe- 
ring to them, were only fo by Adhefion of Particles of 
Air, ^c. which he has Ihewn to be ahforbed in great 
Quantities, by fome Bodies, whilft it is generated for 
reduced from a fixt to an elaftick State) by others • nay 
that it may be ahj'orhed and generated fuccelliive by 
the fame Body, under different Circumftances. ^ 
Secondly, If we fhould allow the above-mentioned 
Suppofition, the Difficulty will ftill remain about the 
Produftion of Ram by the Separation of the Fire from 
the Water; For Dr. Nie’wentyt ikn'oes this Effed to 
two different Caufes. FkJ, to Condenfation (SeSl. 
X.X111.) Saying, « That when contrary Winds blow 
againft the fame Cloud and drive the watery Par- 
tides together, the Fire that adhered to them gets 
“ loofe, and they (becoming then fpecifically heavier) 
“ precipitate and fall dotvn in Rain”. Then in the 
very 
