And though we are yet unable and ignorant of the ways of
_praecipitating_ Air out of the AEther as we can Tinctures, and Salts out
of several _dissolvents_; yet neither of these seeming _impossible_ from
the nature of the things, nor so _improbable_ but that some happy future
industry may find out ways to effect them; nay, further, since we find that
Nature _does really perform_ (though by what means we are not certain) both
these actions, namely, by _praecipitating_ the Air in Rain and Dews, and by
supplying the Streams and Rivers of the World with fresh water, _strain'd_
through secret subterraneous Caverns: And since, that in very many other
_proprieties_ they do so exactly _seem_ of the _same nature_; till further
observations or tryals do inform us of the _contrary_, we may _safely
enough conclude_ them of the _same kind_. For it seldom happens that any
two natures have so many properties _coincident_ or the _same_, as I have
observ'd Solutions and Air to have, and to be _different_ in the rest. And
therefore I think it neither _impossible_, _irrational_, nay nor
_difficult_ to be able to _predict_ what is _likely_ to happen in other
particulars also, besides those which _Observation_ or _Experiment_ have
declared thus or thus; especially, if the _circumstances_ that do often
very much conduce to the variation of the effects be duly _weigh'd_ and
_consider'd_.
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