sS ^ V E R 1 E $. 
has fhewn ); may there not alfo be alter¬ 
nate Fits of eafy Attraction and eafy Re¬ 
pul fi on, occafioned by the Conjunction, or 
Oppofition of the attractive or repulfive 
Sides in the Particles of Matter ? May not 
the Succeffion of fuch Fits be extremely 
quick, as in the Vibration of Bodies, &c. f 
and may they not be prevented, diminifh- 
ed, circumfcribed, augmented, propagated, 
or communicated with almoft infinite Va¬ 
riety (as to the Modification) according to 
the Conftitution of the Bodies wherein they 
are excited, and the Aptnefs or Unaptnefs qf 
other Bodies near them ? 
May we fuppofe the Attraction and Re- 
pulfion of Magnetifm, Gravity, and Elec¬ 
tricity, to be different Powers, or different 
Modifications only of the general attractive 
and repulfive Power fuppofed refident in all 
Matter ? 
Do not Heat and Motion feem moft likely 
to excite Repulfion ; and are not Cold and 
Reft moft favourable to Attraction ? 
When the Particles of Subftances eva- 
porate, become volatile, or fly away, is not 
fuch Volatility owing to the repulfive Force 
of the Particles, fomehow or other put into 
Action ? And is not the Explofion of Gun¬ 
powder, &c. occafioned probably by a Fit 
of Repulfion, excited fuddenly and violently 
by Fire, in the component particles of the 
Gunpowder r 
