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SECT. V.

Which raife the Steam, &c.

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"HE Clearners of the Stomach of Phlegm, or fuch Matter as can fheath the Agents, fufficient Quantity of Heat, and proper Juices in the Stomach, or fecreted into it, a due and proportional Quantity of Meat and Drink, stocked with a due Proportion of Salts and Spirits, and of Matter not too crafs or viscous, fufficient Action, fometimes they rife too fast by too hot or too falt Meat, too much fpirituous Drink, too violent Exercife, Stoppages of the Paffages or Pores where the Steam fhould circulate or perfpire, too great an Addition of Heat, too great a Discharge of Moisture by hot Air, Fire, keeping off the Preffure of the Air in Bed, or by Clothing, which lets the inward Steam open the Pores, and keeps off the Motion of the Air, which bears off the Corpufcles of Heat dif charged, and fupplies their Places with Cold, fometimes by too great a Secretion of brinous Juices, or of Juices too sharp, into the Stomach and Guts. By the Effects upon the feveral Parts, Judgment

may

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may be made whether the Steam rife in due Proportion, or too faft, or too crass, or too fharp. When the Preffure of the Atmosphere is ftrong, and the Air clear, if the Steam rife, and pafsin due Proportion, the Blood, in young healthy Per fons, will circulate briskly, the Body be light and active, the Mufcles ftrong, the outward Parts plump and smooth: If too faft it will inflame the Body, affect the tender Veffels in the Head, &c. discharge the Moisture too much at the Pores and Lungs, force off fome of the finer Corpufcles of Blood with the Urine, make it red and hot, leave the Excrements hot and dry, make too much of the Blood appear in the outward Parts, caufe bleed. ing at the Nofe, &c. When to that Degree we call a Fever, the Steam exhales fo much of the finer Juices, that it leaves not fufficient to extend the Glands, and diftend the Muscles, and at the latter End when the outward Glands are empty, the Parts will be lanko and withered and s when there is not Steam fufficient, or when 'tis too fiery or penetrating to extend the Muscles, the Parts will move weakly and be fore, and mave with Un eafinefs or Pain. If the Steam rife much

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fafter than it can pafs at the Lacteal Veffels, it will extend the Stomach and Guts till they be ready to burft, and frequently burft the Stays, or any thing which confines them, and paffes the Place, and ftop the Extenfion of the Lungs, and that which gets out, flies with fuch Force into all the Parts, especially the tendereft in the Head, that it ftops the Senses till it gets Vent by Degrees, or fomething cool be taken into the Stomach to condense or clog the Steam. Whether this be the Cause of Apoplectick Fits, I have not had Opportunity to obferve. Whether the Will, in any fudden Surprize of Joy, Fear, &c. can direct the Steam to the Stomach or Guts, and force the Glands fuddenly to fecrete a great Quantity of the Juices which are fo volatile, I cannot determine. But when the Steam is put into violent Agitation, by Abundance of Juices flowing into the Stomach, by fudden Frights, and in feveral forts of Fits, as foon as it begins to pafs, the Persons are much stronger than at other Times. Where the Steam is raised too high by the Juices ftopping the Glands, abforbing or fheathing the Juices, ftops or leffens the Effect, and discharging from the

Stomach,

Stomach, or any other Way, takes away the Cause. *

SECT. VI.

Which hinders the Steam from rifing.

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Too much Phlegm, or other viscous Matter which entangles and overpowers the Agents or Juices; want of proper Juices in the Blood to fecrete into the Stomach, Stoppages in the Glands, or fomething which hinders the Juices from fecreting into the Glands, or out of them into the Stomach, want of pro er Juices and fufficient Quantity in the Sto-. mach, or or the Prefence of fomething which abforbs or blunts them; too much Meat and Drink, or too great a Proportion of Meat to Drink, or of Drink to the Meat; want of fufficient Quantity of Spirits or Salts, or the Prefence of Matter which fheaths and entangles them, and is too crafs to be born off by them; want of Action. If the Steam rife too flowly, either the Glands do not fecrete brinous Juice enough into the Stomach, or VOL. X.

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*Let this be compared with the common Practice, and I believe the Succefs will prove what is alledged; tho' the Reason has hitherto been very obfcure.

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'tis not fharp enough, or there is a Load of tough cold Phlegm which goes not off, but ftops the Glands, and entangles the Salts. If it be Phlegm, in a Morning when Stomach is lank, and you lie upon one Side, you will feel a Load or Preffure there; or if you drink a good Quantity of fpirituous Drink, or use violent Action, and the Stomach do not extend, or the Blood circulate briskly, 'tis likely the Glands fecrete too much Phlegm into the Stomach, or you have a great Load of Phlegm there, and that, if not discharged, will in time make the Excrements and all the Juices of the Body tough and crafs, the Paffages and Glands foul and ftraighter, your Blood move flowly, your Body weak, dull and inactive. Nature fences against the Effects two Ways, by making the lacteal Veffels ftraighter, the lefs crafs Matter can go into the Blood, and makes the Defect fupply a Cure. For as we then need more Salts to divide the Matter in the Stomach, increase and excite the Steam, the Paffages for fecreting the Urine, and the Pores are ftraightned by the Phlegm, and thereby the Salts are prevented from fecreting, and the Water is only permitted to pass thin and clear. The Salts retained

are

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