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

Table of contents

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[51.] Obſervations.
[52.] Length and Shortneß of Life in Living Creatures. The Hiſtory.
[53.] Obſervations.
[54.] Alimentation, or Nouriſhment: and the way of Nouriſhing. The History.
[55.] Length and Shortneſs of Life in Man. The Hiſt@ry.
[56.] Medicines for Long Life.
[57.] The Intentions.
[58.] The Operation upon the Spirits that they may remain Youthful, and renew their Vigour. The Hiſtory.
[59.] The Operation upon the Excluſion of the Air. 2. The Hiſtory.
[60.] The Operation upon the Bloud, and the Sanguifying Heat. 3. The Hiſtory.
[61.] The Operation upon the Juices of the Body. 4. The Hiſtory.
[62.] The Operation upon the Bowels for their Extruſion of Aliment. 5. The Hiſtory.
[63.] The Operation upon the Outward Parts for their Attraction of Aliment. 6. The Hiſtory.
[64.] The Operation upon the Aliment it ſelf for the Inſinuation thereof. 7. The Hiſtory.
[65.] The Operation upon the laſt Act of Aſsimilation. 8.
[66.] The Operation upon the Inteneration of that which begins to be Arefied, or the Malaciſſation of the Body. 9.
[67.] The Hiſtory.
[68.] The Operation upon the Purging away of old Juice, and Sup-plying of new Juice; or of Renovation by Turns. 10. The Hiſtory.
[69.] The Porches of Death.
[70.] The Hiſtory.
[71.] The Differences of Youth and Old Age.
[72.] Moveable Canons of the Duration of Life and Form of Death. Canon I.
[73.] The Explication.
[74.] Canon II.
[75.] The Explication.
[76.] Canon III.
[77.] The Explication.
[78.] Canon IV.
[79.] The Explication.
[80.] Canon V.
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31840The Hiſtory of Life and Death.
The Operation upon the Juices of the Body. 4.
The Hiſtory.
THere are two kinds of Bodies (as was ſaid before in the Inquiſition touching In-
111. animates) which are hardly conſumed, Hard things and Fat things;
as is
ſeen in Metalls and Stones, and in Oil and Wax.
It muft be ordered therefore, that the juice of the body be ſomewhat hard, and that it
222. be fatty or ſubroſcid.
As for bardneſs, it is cauſed three ways: by Aliment of a firm nature, by Cold con-
333. denſing the skin and fleſh, and by Exerciſe, binding and compacting the juices of the
body, that they be not ſoft and frothy.
As for the Nature of the Aliment, it ought to be ſuch as is not eaſily diſſipable; ſuch
444. as are Beef, Swine’s-fleſh, Dear, Goat, Kid, Swan, Gooſe, Ring-dove, eſpecially if they be a
little powdred;
Fiſh likewiſe ſalted and dried, Old Cheeſe, and the like.
As for the Bread; Oaten-bread, or bread with ſome mixture of Peaſe in it, or Rye-
555. bread, or Barly-bread, are more ſolid than Wheat-bread, and in Wheat-bread, the
courſe Wheat-bread is more ſolid than the pure Manchet.
The Inhabitants of the Orcades, which live upon ſalted fiſh, and generally all Fiſh-eaters,
666. are long liv’d.
The Monks and Hermites which fed ſparingly, and upon dry Aliment, attained com-
777. monly to a great age.
Alſo pure Water uſually drunk makes the juices of the body leſs frothy? unto which
888. if, for the dulneſs of the ſpirits, (which no doubt in VVater are but a little penetrative)
you ſhall adde a little Nitre, we conceive it would be very good.
And touching the
firmneſs of the Aliment thus much.
As for the Condenſation of the skin and fleſh by Cold: They are longer-liv’d for the
999. moſt part that live abroad in the open air, than they that live in Houſes;
and the Inha-
bitants of the cold Countries, than the Inhabitants of the hot.
Great ſtore of clothes, either upon the bed or back, do reſolve the body.
101010.
Waſhing the body in Cold Water is good for length of life; uſe of hot Baths is naught.
111111. Touching Baths of Aſtringent Mineral Waters we have ſpoken before.
As for Exerciſe; an idle life doth manifeſtly make the fleſh ſoft and diſſipable: robuſt
121212. exerciſe (ſo it be without over-much ſweating or wearineſs) maketh it hard and com-
pact.
Alſo exerciſe within cold Water, as ſwimming, is very good; and generally
exerciſe abroad is better than that within houſes.
Touching Frications, (which are a kind of exerciſe) becauſe they do rather call forth
131313. the Aliment than harden the fleſh, we will inquire hereafter in the due place.
Having now ſpoken of hardning the juices of the body, we are to come next to the
141414. Oleoſity and Fattineſs of them, which is a more perfect and potent Intention than Indu-
ration, becauſe it hath no inconvenience or evil annexed.
For all thoſe things which
pertain to the hardning of the juices are of that nature, that while they prohibit the
abſumption of the Aliment, they alſo hinder the operation of the ſame;
whereby it
happens, that the ſame things are both propitious and adverſe to length of life:
but thoſe
things which pertain to making the Juices Oily and Roſcid, help on both ſides, for they
render the Aliment both leſs diſſipable, and more reparable.
But whereas we ſay that the Juice of the body ought to be Roſcid and Fat, it is to be
151515. noted that we mean it not of a viſible Fat, but of a Dewineſs diſperſed, or (if you will
call it) Radical in the very ſubſtance of the body.
Neither again let any man think, that Oil or the Fat of Meats or Marrow do engen-
161616. der the like, and ſatisfie our intention:
for thoſe things which are once perfect are
not brought back again;
but the Aliments ought to be ſuch, which after digeſtion
and maturation do then in the end engender Olcoſity in the Juices.
Neither again let any man think, that Oil or Fat by it ſelf and ſimple is hard of diſſi-
171717. pation, but in mixture it doth not retain the ſame nature:
for as Oil by it ſelf is much
more longer in conſuming then VVater;
ſo in Paper or Linnen it ſticketh longer, and
is later dried, as we noted before.

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