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Cafe will extend and contract, and the Force which extends the Tubes be greater than the Compreffure and Strength of the Cafe, it will extend, if leffer it will contract; if the Force in any one of the Tubes or Pipes be less than the reft, it will contract more than the reft, if greater, extend more than the reft.

Our Bodies are so surprisingly contrived and adapted to the Qualities of inanimate Bodies and Fluids, that every Thing, within and about us, acts according to the Laws of (the Agents which they ignorantly call) Gravity, Fluidity, Elafticity, &c. The Fluids within us move and are moved, by fuch Impulfes, as they are without; and fuch Corpufcles, as are fharp, fmooth, &c, without our Bodies, are fo within, and are united, divided, and separated as they are without; and they are, no otherwife changed within, than they are without, viz. by Union, Divifion, and Separation, which is occafioned by their Motion, Taction, paffing Strainers, &c. And the Motion of the Fluids within, is encreased by greater Proportions of volatile Spirits, Fire, &c. as they are without, by greater Emiffions of Heat from the Sun, from Fire, Manure, &c. and retarded by a greater Proportion

of

of Cold, heavy Matter, &c. with this Difference, that every living Body needs Supplies of Matter, to furnish Agents to keep the Motions going, and the great Body of this Globe needs none, except Heat from the Sun. And perhaps the Motions of the Fluids in both are, in fome Measure, altered by the Qualities in, or Motion of, the Moon and other Orbs. Man's Body is formed of Parts called Supporters, Pillars, Clothing, or Covering, Partitions, Rollers, Wedges, Levers, Pulleys, Cords, Preffes, Bellows, Sieves, Strainers, Canals, Receptacles, and by many other comparative Names which the Anatomifts ufe. Each is at firft formed, in the Womb of a Woman, and by her nourished. After its Birth, the Stomach and Guts, are fucceffively filled with what it eats. or drinks, from whence the other hollow Veffels are filled with Fluids, fome with a Mixture of all forts together, fome with this, fome with that fort feparated; the greatest Part kept in perpetual Motion, fome fmall Quantities kept stagnant to fupply proper Occafions at proper Seasons; the whole is fo framed, as to need a continual Supply of proper Matter in the Womb, to form and nourish it; and after that, to keep the Parts of it

in

in Motion, and to augment for fome time, and to fupply the Wafte of thofe Parts. That Matter is compofed of a Mixture of various forts of Fluids, and Atoms, of various forts of vegetable Matter, &c. which lies difperfed through the whole Surface of the Earth, in the Waters, &c. The Atoms of Fluids are raised in Vapours, fink into the Ground, rife and pervade the Earth in Steam, and they, and thofe of the Solids, are by the fame Agents, as act in and upon Man's Body, raised in the Surface of the Earth, and collected by the Fibres of the Roots of Trees and Plants, in a fort of Halitus or Steam, carried along their Tubes through feveral Strainers or Glands, part nourishes, forms, and encreases the Roots, Stems, Branches, Leaves, and Fruit, and part is difcharged as Excrement. These Atoms thus collected, and formed into Roots, Plants, Seeds, and Fruits, are fome of them fitted for the immediate Nourishment of Man, fome for his other Ufes, fome fitted for the Nourishment of Beasts, Birds, Fifhes, &c. and of feveral forts of thefe Animals, fome are fitted for the Food of Man, fome for the Food of other Animals, fome for the Service of Man, and all for his Benefit, as I have

fhewed

fhewed in another Place *.

Those fitted

for the Nourishment of Animals are by them collected and preyed upon, and their Bodies by the fame Agents, in the Stomachs of thofe which eat them, are again divided, and what is fit to form and keep their Parts in Motion, and to grow and fupply their Parts, is carried off from the Stomach, and Guts, in Steam or Halitus, forted by Glands, &c. and the reft difcharged in Excrement. The Flesh of thofe fitted for the Food of Man is by the fame Agents again divided in the Stomach of Man; part carried off in Steam for the Ufes aforefaid, and part caft out in Excrement, fo nothing is fitted for thofe Ufes in Man till it has feveral Times, at least once, been divided infinitely small, carried from the Earth, or Excrements in Form of Steam, paffed proper Strainers, and been separated from the ufelefs or hurtful Atoms.

See Vol. XII. State of Nature.

CHAP.

CHA P. II.

The Things necellary to keep thefe Fluids in Motion.

THE Things abfolutely neceffary to keep thefe Fluids in Motion, and to move the Parts, &c. are, 1. A fufficient Quantity of fuch properly prepared Fluids and Solids taken fucceffively, at proper Diftances of Time, into the Stomach, without which, or by the Excefs or Defect of which, the Fluids will run too faft, or too flowly, and in a short Time ftand ftill.

2. The natural Compreffure of the Air, which is common to all, in all Places, unlefs taken off by Art, and then there is immediately a total Ceffation of all Motion. 3. A fufficient Degree of Warmth or Heat from the Sun, Fire, Clothes, Action, or &c. In this we generally err in Excefs by Cuftom, and Man might live much cooler than we keep ourselves. But an extraordinary Defect of this fometimes occafions Efforts, which we call Fevers, and in a short time puts a stop to the Motions of the Fluids, fometimes fuddenly. 4. Air fufficiently pure,

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