Bacon, Francis, Sylva sylvarum : or, a natural history in ten centuries

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11783Century IV. the Oyl is almoſt conſumed; whether the Air made of the Oyl, if you put
to it a flame of a Candle, in the letting of it forth, will enflame.
It were good
alſo to have the Lamp made, not of Tin, but of Glaſs;
that you may ſee
how the Vapor or Air gathereth by degrees in the top.
A fourth point, that importeth the laſting of the Flame, is the cloſe-
11374. neſs of the Air, wherein the Flame burneth.
Weſee, that if Wind blow-
eth upon a Candle, it waſteth apace;
we ſee alſo, it laſteth longer in a Lan-
thorn, than at large.
And there are Traditions of Lamps and Candles, that
have burnt a very long time in Caves and Tombs.
A fifth point, that importeth the laſting of the Flame, is the Nature
22375. of the Air where the Flame burneth;
whether it be hot or cold, moiſt or
dry.
The Air, if it be very cold, irritateth the Flame, and maketh it burn
more fiercely, (as Fire ſcor heth in Froſty weather) and ſo furthereth the
Conſumption.
The Air once heated, (I conceive) maketh the Flame burn
more mildly, and ſo helpeth the continuance.
The Air, if it be dry, is in-
different;
the Air, if it be moiſt, doth in a degree quench the Flame, (as we
ſee Lights will go out in the Damps of Mines;)
and howloever maketh it
burn more dully, and ſo helpeth the continuance.
BUrials in Earth ſerve for Preſervation, and for Condenſation, and for
33376. Induration of Bodies.
And if you intend Condenſation or Induration,
44Experiments
in Conſort,
touching
Burials or In-
ſuſions of di-
vers Bedies in
Earth.
you may bury the Bodies ſo, as Earth may touch them;
as if you would
make Artificial Procellane, &
c. And the like you may do for Conſerva-
tion, if the Bodies be hard and ſolid, as Clay, Wood, &
c. But if you
intend Preſervation of Bodies, more ſoft and tender, then you muſt do
one of theſe two:
Either you muſt put them in caſes, whereby they may
not touch the Earth;
or elſe you muſt Vault the Earth, whereby it
may hang over them, and not touch them:
For if the Earth touch them,
it will do more hurt by the moiſture, cauſing them to putrifie, than good
by the virtual cold, to conſerve them, except the Earth be very dry and
ſandy.
An Orenge, Lemmon, and Apple, wrapt in a Linning Cloth, being buried
55377. for a fortnights ſpace four foot deep within the Earth, though it were in a
moiſt place, and a rainy time;
yet came forth no ways mouldy or rotten,
but were become a little harder than they were, otherwiſe freſh in their
colour, but their Juyce ſomewhat flatted.
But with the Burial of a fortnight
more, they become putrified.
A Bottle of Beer buried in like manner as before, became more
66378. lively, better taſted, and clearer than it was:
And a Bottle of Wine,
in like manner.
A Bottle of Vinegar ſo buried, came forth more lively
and more odoriferous, ſmelling almoſt like a Violet.
And after the whole
Moneths Burial, all the three came forth as freſh and lively, if not better
than before.
It were a profitable Experiment, to preſerve Orenges, Lemmons,
77379. and Pomgranates, till Summer;
for then their price will be mightily
encreaſed.
This may be done, if you put them in a Pot or Veſſel well
covered, that the moiſture of the Earth come not at them;
or elſe by put-
ting them in a Conſervatory of Snow.
And generally, whoſoever will make
Experiments of Cold, let him be provided of three things, a Conſervatory
of Snow, a good large Vault, twenty foot at leaſt under the Ground, and
a deep Well.

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