Boyle, Robert, New experiments physico-mechanicall, touching the spring of the air and its effects, 1660

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1without (in the leaſt) turning into Air,
notwithſtanding its having been kept
there theſe fifty years: For he tells us,
That the Water hath continued there all
this while without any diminution.
Schottus

Part 3.
Claſſ.
1.
Nor does it appear in thoſe Glaſſes,
which for Chymical Experiments we uſu­
ally cloſe with Hermes his Seal (as they
call it) that the included Air does, during
its long Impriſonment, notwithſtanding
the alteration it receives from various de­
grees of heat, diſcernably alter its nature.
Whereas we plainly perceive in our Dige­
ſtions and Diſtillations, that though it
may be rarified into inviſible Vapors, yet
it is not really chang'd into Air, but onely
divided by heat, and ſcatter'd into very
minute parts, which meeting together in
the Alembick or in the Receiver, do pre­
ſently return into ſuch Water as they con­
ſtituted before.
And we alſo ſee, that
ev'n Spirit of Wine, and other ſubtle and
fugitive Spirits, though they eaſily fly in­
to the Air, and mingle with it, do yet in
the Glaſſes of Chymiſts eaſily lay aſide
the diſguiſe of Air, and reſume the deve­
ſted form of Liquors.
And ſo volatile
Salts, as of Urine, Harts-horn, &c. though
they will readily diſperſe themſelves

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