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

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221187Century IX.
THe nature of the Orris Root, is almoſt ſingular, for there be few odo-
11863.
Experiment
Solitary,
touching the
Orris Root.
riferous Roots;
and in thoſe that are in any degree ſweet, it is but the
ſame ſweetneſs with the Wood or Leaf:
But the Orris notſweet in the
Leaf, neither is the Flower any thing ſo ſweet as the Root.
The Root ſeem-
eth to have a tender dainty heat, which when it cometh above ground to
the Sun, and the Air, vaniſheth:
For it is a great Mollifier, and hath a ſmell
like a Violet.
IT hath been obſerved by the Ancients that a great Veſſel full, drawn into
22864
Experiment
Solitary,
touching the
Compre ßion of
Liquors.
Bottles;
and then the Liquor put again into the Veſſel, will not fill the
Veſſel again, ſo full as it was, but that it may take in more Liquor;
and that
this holdeth more in Wine, than in Water.
The cauſe may be trivial, name-
ly, by the expence of the Liquor, in regard ſome may ſtick to the ſides of
the Bottles:
But there may be a cauſe more ſubtil, which is, that the Liquor
in the Veſſel, is not ſo much compreſſed, as in the Bottle;
becauſe in the
Veſſel, the Liquor meeteth with Liquor chiefly;
but in the Bottles, a ſmall
quantity of Liquor meeteth with the ſides of the Bottles, which compreſs it
ſo, that it doth not open again.
WAter being contiguous with Air, cooleth it, but moiſteneth it not,
33865.
Experiment
Solitary,
touching the
Working of
Water upon
Air contiguo
ous.
except it Vapor.
The cauſe is, for that Heat and Cold have a Virtual
Tranſition, without Communication of ſubſtance, but moiſture not;
and
to all madeſaction there is required an imbibition:
But where the Bodies
are of ſuch ſeveral Levity, and Gravity, as they mingle not, they can follow
no imbibition.
And therefore, Oyl likewiſe lieth at the top of the Water,
without commixture:
And a drop of Water running ſwiftly over a Straw
or ſmooth Body, wetteth not.
STarlight Nights, yea, and bright Moonshine Nights, are colder than Cloudy
44866.
Experiment
Solitary,
touching the
Nature of
Air.
Nights.
The cauſe is, the drineſs and Fineneſs of the Air, which thereby
becometh more piercing and ſharp;
and thereſore great Continents are
colder than Iſlands.
And as for the Moon, though it ſelf inclineth the Air to
moiſture, yet when it ſhineth bright, it argueth the Air is dry.
Alſo cloſe
Air is warmer than open Air, which (it may be) is, for that the true cauſe of
cold, is an expiration from the Globe of the Earth, which in open places is
ſtronger.
And again, Air it ſelf, if it be not altered by that expiration, is
not withoutſome ſecret degree of heat;
as it is not likewiſe without ſome
ſecret degree of Light:
For otherwiſe Cats, and Owls, could not ſee in the
Night;
but that Air hath a little Light, proportionable to the Viſual Spirits
oſ thoſe Creatures.
THe Eyes do move one and the ſame way; for when one Eye moveth
55867.
Experimeats
in Conſort,
touching the
Eyes and
Sight.
to the Noſtril, the other moveth from the Noſtril.
The cauſe is Motion
of Conſent, which in the Spirits, and Parts Spiritual, is ſtrong.
But yet uſe will
induce the contrary;
for ſome can ſquint when they will. And the common
Tradition is, that if Children be ſet upon a Table with a Candle behinde
them, both Eyes will move outwards, as affecting to ſee the Light, and ſo
induce Squinting.
We ſee more exqu iſitely with one Eye ſhut, than with both open. The
66868. cauſe is, for that the Spirits Viſual unite themſelves more, and ſo

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