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

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30628The Hiſtory of Life and Death.
The Operation upon the Spirits that they may remain
Youthful, and renew their Vigour.
The Hiſtory.
THE Spirits are the Maſter-workmen of all effects in the Body. This is ma-
111. nifeſt by Conſent, and by infinite inſtances.
If any man could procure that a young man’s Spirit could be conveyed into
222. an old man’s Body, it is not unlikely but this great Wheel of the Spirits might
turn about the leſſer Wheel of the Parts, and ſo the courſe of Nature become retro-
gade.
In every Conſumption, whether it be by Fire or by Age, the more the Spirit of the
333. Body, or the Heat, preyeth upon the Moiſture, the leſſer is the duration of that thing.
This occurs every where, and is manifeſt.
The Spirits are to be put into ſuch a temperament and degree of activity, that
444. they ſhould not (as he ſaith) drink and guzzle the juices of the Body, but ſip them
onely.
There are two kinds of Flames: the one eager and weak, which conſumes ſlight
555. ſubſtances but hath little power over the harder;
as the flame of ſtraw, or ſmall Sticks:
the other ſtrong and conſtant, which converts hard and obſtinate ſubſtances; as the
flame of hard wood, and ſuch like.
The eager flames, and yet leſs robuſt, do dry Bodies, and render them exhauſt and
666. ſapleſs;
but the ſtronger flames do intenerate and melt them.
Alſo in Diſſipating Medicines, ſome vapour forth the thin part of the tumors
777. or ſwellings, and theſe harden the tumour;
others potently diſcuſs, and theſe ſof-
ten it.
Alſo in Purging and Abſterging Medicines, ſome carry away the fluid humors vio-
888. lently, others draw the more obſtinate and viſcous.
The Spirits ought to be inveſted and armed with ſuch a heat, that they may chuſe ra-
999. ther to ſtir and undermine hard and obſtinate matters, than to diſcharge and carry away
the thin and prepared;
for by that means the Body becomes green and ſolid.
The Spirits are ſo to be wrought and tempered, that they may be in Subſtance Denſe, not
101010. Rare;
in Heat strong, not Eager; in Quantity Sufficient for the offices of Life, not Re-
dundant or Turgid;
in Motion Appeaſed, not Dancing or Unequal.
That Vapours work powerfully upon the Spirits, it is manifeſt by Sleep, by Drunken-
111111. neſs, by Melancholick Paſſions, by letificant Medicines, by Odours, calling the Spirits
back again in Swounings and Faintings.
The Spirits are condenſed four ways; either by putting them to flight, or by refri-
121212. gerating and cooling them, or by ſtroaking them, or by quieting them.
And firſt of their
Condenſation by putting them to flight.
Whatſoever putteth to flight on all parts, driveth the body into his Centre, and ſo
131313.Condenſeth.
To the Condenſation of the spirits by flight, the moſt powerful and effectual is Opi-
141414. um, and next Opiates, and generally all Soporiferous things.
The force of Opium to the condenſation of the Spirits is exceeding ſtrong, whenas
151515. perhaps three grains thereof will in a ſhort time ſo coagulate the Spirits, that they re
turn no more, but are extinguiſhed, and become immoveable.
Opium, and the like, put not the Spirits to flight by their coldneſs, for they
161616. have parts manifeſtly hot;
but, on the contrary, cool by their putting the Spirits
to flight.
The Flight of the Spirits by Opium and Opiate Medicines is beſt ſeen by applying the
171717. ſame outwardly;
for the Spirits ſtraight with-draw themſelves, and will return no more,
but the part is mortified, and turns to a Gængrene.
Opiates, in grievous pains, as in the Stone, or the cutting off of a Limb, mitigate pains
181818. moſt of all, by putting the Spirits to flight.
Opiates obtain a good effect from a bad cauſe; for the Flight of the Spirits is evil but
191919. the Condenſation of them through their flight is good.

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