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

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5319Century I.
IT is found by Experience, that in Diets of Guiacum, Sarza, and the like,
1168. (eſpecially, if they be ſtrict) the Patient is more troubled in the beginning
22Experiment)
Solitary,
touching
Diets.
than aſter continuance;
which hath madeſome of the more delicate ſort
of Patients, give them over in the midſt;
Suppoſing, that if thoſe Diets
trouble them ſo much at firſt, they ſhall not be able to endure them to the
end.
But the cauſe is, for that all thoſe Diets, to dry up Humors, Rheums,
and the like;
and they cannot dry up until they have firſt attenuated: And
while the Humor is attenuated, it is more fluid, than it was before, and
troubleth the Body a great deal more, until it be dryed up, and conſumed.
And therefore Patients muſt expect a due time, and not check at them at
the firſt.
THe producing of Cold is a thing very worthy the Inquiſition, both for
33Experiments
in Conſort,
touching the
Production of
Cold.
uſe and diſcloſure of cauſes.
For Heat and Cold are Natures two hands,
whereby ſhe chiefly worketh;
and Heat we have in readineſs, in reſpect of
the Fire:
But for Cold, we muſt ſtay tillit cometh, or ſeek it in deep Caves,
or high Mountains;
and when all is done, we cannot obtain it in any great
degree:
For Furnaces of Fire are far hotter than a Summers Sun, but
Vaults or Hills are not much colder than a Winters Froſt.
The firſt means of producing Cold, is that which Nature preſenteth us
4469. withal;
namely, the expiring of Cold out of the inward parts of the Earth
in Winter, when the Sun hath no power to overcome it;
the Earth being
(as hath been noted by ſome (Primum Frigidum.)
This hath been aſſerted, as
well by Ancient, as by Modern Philoſophers:
It was the tenet of Parmenides it
was the opinion of the Author of the Diſcourſe in Plutarch, (for I take it, that
Book was not Plutarchs own) De primo Frigido.
It was the opinion of Tele-
ſius, who hath renewed the Philoſophy of Parmenides, and is the beſt of the
Noveliſts.
The ſecond cauſe of Cold is, the contact of cold Bodies; for Cold is
5570. Active and Tranſitive into Bodies adjacent, as well as Heat;
which is ſeen
in thoſe things that are touched with Snow or cold Water.
And therefore,
whoſoever will be an Enquirer into Nature, let him reſort to a Conſervatory
of Snow and Ice;
ſuch as they uſe of delicacy, to cool Wine in Summer:
Which is a poor and contemptible uſe, in reſpect of other uſes that may be
made of ſuch Conſervatories.
The third cauſe is the Primary Nature of all Tangible Bodies; for it
6671. is well to be noted, That all things whatſoever (Tangible are of themſelves)
Cold;
except they have an acceſſory heat by Fire, Life, or Motion: For
even the Spirit of Wine, or Chymical Oyls, which are ſo hot in operation,
are to the firſt touch, Cold;
and Air it ſelt compreſſed, and condenſed a
little by blowing, is Cold.
The fourth cauſe is, the Denſity of the Body; for alldenſe Bodies are
7772. colder than moſt other Bodies, as Mettals, Stone, Glaß, and they are longer
in heating than ſafter Bodies.
And it is certain, that Earth, Denſe, Tangable,
hold all of the Nature of Cold:
The cauſe is, for that all Matters Tangible
being Cold, it muſt needs follow, that where the Matter is moſt congregate
the Cold is the greater.
The fiſth cauſe of Cold, or rather of increaſe and vehemency of Cold, is
8873. A quick Spirit incloſed in a cold Body;
as will appear to any that ſhall atten-
tively conſider of Nature in many inſtances.
We ſee Nitre (which hath
a quick Spirit) is Cold, more cold to the Tongue than a Stone;
ſo

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