sm, and
Electricity, reach to very sensible distances, and so have been observed
by vulgar Eyes, and there may be others which reach to so small
distances as hitherto escape Observation; and perhaps electrical
Attraction may reach to such small distances, even without being excited
by Friction.

For when Salt of Tartar runs _per Deliquium_, is not this done by an
Attraction between the Particles of the Salt of Tartar, and the
Particles of the Water which float in the Air in the form of Vapours?
And why does not common Salt, or Salt-petre, or Vitriol, run _per
Deliquium_, but for want of such an Attraction? Or why does not Salt of
Tartar draw more Water out of the Air than in a certain Proportion to
its quantity, but for want of an attractive Force after it is satiated
with Water? And whence is it but from this attractive Power that Water
which alone distils with a gentle luke-warm Heat, will not distil from
Salt of Tartar without a great Heat? And is it not from the like
attractive Power between the Particles of Oil of Vitriol and the
Particles of Water, that Oil of Vitriol draws to it a good quantity of
Water out of the Air, and after it is satiated draws no more, and in
Distillation lets go the Water very difficultly? And when Water and Oil
of Vitriol poured successively into the same Vessel grow very hot in the
mixing, does not this Heat argue a great Motion in the Parts of the
Liquors? And does not this Motion argue, that the Parts of the two
Liquors in mixing coalesce with Violence, and by consequence rush
towards one another with an accelerated Motion? And when _Aqua fortis_,
or Spirit of Vitriol poured upon Filings of Iron dissolves the Filings
with a great Heat and Ebullition, is not this Heat and Ebullition
effected by a violent Motion of the Parts, and does not that Motion
argue that the acid Parts of the Liquor rush towards the Parts of the
Metal with violence, and run forcibly into its Pores till they get
between its outmost Particles, and the main Mass of the Metal, and
surrounding those Particles loosen them from the main Mass, and set them
at liberty to float off into the Water? And when the acid Particles,
which alone would distil with an easy Heat, will not separate from the
Particles of the Metal without a very violent Heat, does not this
confirm the Attraction between them?

When Spirit of Vitriol poured upon common Salt or Salt-petre makes an
Ebullition with the Salt, and unites with it, and in Dis