but very little of such Humour as is dif-
charged at the smaller Glands. See the
Description of the Ducts, &c. above.
When crass Matter stops any small Pas-
sages in any of the Blood-vefsels, every
Push the Steam makes, it, and the Blood
push against the Matter stopped, and
must rebound back, 'and take the next
Passage behind to circulate ; and by De-
grees more crafs Matter lodges in the
Vefsel between it, and the next Passage
behind, and extends the Vessel. If the
Corpuscles of the Matter be blunt, they
fwell the Parts; if sharp, cut them, and
are extravasated, cause Pain; and if they
stop while they ferment, and be sharpen-
ed too much, cause Inflammations; and
some of them cut their Way, or get Pas-
fage into the Blood, affect the stomach,
and other Parts, cause Fevers, &c.

CH A P. XXXI.
The Use of Plaisters and Ointments.
T HE Intention of applying a Plai- The Use.

ster, or cleaving Matter, to any
Part out of Order, or to a Wound, is to
keep off the Pressure of the Air, and fuf-
fer the Steam to discharge what is necef-
Vol. X. .

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sary

Effect

fary at the Pores, or cut Ends of the Vef. fels, and to prevent the Air, Fire, and Salts, &c. in it, from wounding the Ends of the cut Vessels, or drying the Juices, which issue out, into a dead skin or Scab, which would stop the Discharge. The Effect of the Plaister is various, according to the Corpuscles mix'd in it; if they be sharp, the Mouths of the Vessels will be kept open, and make a great Dif charge; if contrary, they will have contrary Effects, &c. When the Vessels are torn, and some broke inwardly, the Wound is more difficult to be healed, than when they are cut in a Line, because the Ends of those broke inward cannot be come at by the Plaisters, the Air, or any Thing applied outwardly to stop them, The Intention of using Ointments, is very different, according to the Composition and Qualities, of the Corpuscles in the several sorts of Oil, or of those of various forts of Matter mixed in them. Those of soft Parts, keep the Humidity or Moisture from evaporating, and keep the Parts supple. Those, which have fpirituous Corpuscles in them, enter at the Pores, and do much the same thing, as Spirits do in Fomentation. Those, which have Cor

puscles

puscles of sharp Salts in them, corrode
the Parts, &c.

CHA P. XXXII.
The Ufe of smoaking or chewing Tobaccó,

&c.

THÉ Intention of smoaking or cheW=The true

1 ing Tobacco; or, such Things as open Use of the Glands in the Mouth, should be to fmoaking

or chew. discharge the Saliva or Spittle, out of the ing ToGlands of the Mouth, when there is too bacco. much of it in the Blood, or it flows into them, in too great Abundance, or is too Crafs, or too sharp, &c. Any Thing that the man: hath Juices or Corpuscles in it, which her how

they ope: open the Glands in the Valves, which rate: ihut those Glands, thereby weakens the Valves, and gives the greater Glands Opportunity to discharge. If those Corpus cles reach the Valves in the Throat, they open the Glands which compose them, so weaken them, and makes one like to vomit. Thofe, which only reach and open the Glands in the Mouth; may by the Juices issuing out of those Glands, one after another, fucceffively downward into the Stomach, open the Glands, and let the Juices secrete there, and those still

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fecrete

too free

secrete downward ; and as it doth often, occasion at first an Inclination to vomit, and afterwards to a Stool. Or, that Juice may raise some little Ferment in the Sto

mach, take off the Sense of Hunger, and Of the make one brisker. But it is likely, the quent Use. nt Use of it, widens the Ducts that

secrete the Juices out of the Blood, into the Glands of the Mouth, contracts those Glands by discharging them, before they are full, and thereby diminishes and wea

kens the Parts of the Mouth, alters the • Qualities of the Juices by making, the

Ducts wider, and by taking them away before they have rested, and, as one may say, been digested or prepared by staying a due Time in the Glands, or before they be duly separated out of one into another, or some back into the Blood, and perhaps lessening the Quantity necessary to supply other Parts, for other Uses, And if it do the same Thing in the Stomach, it wastes the Juices by small Quantities, and lessens the Stock which should dissolve the Meat at Meal Time, and so does all little Quantities of Coffee, Tea, &c. 'Tis possible, some small Quantity of the small sharp Corpuscles in the Tobacco, may enter in at the Glands, and {o into the Blood, and be circulated in it.

· But

But so small a Proportion of them will be distributed to the Stomach, that the other seems more likely, yet they may contribute jointly. The Corpufcles in different Bodies and Fluids, either open the Glands in different Parts of the Mouth, or different Glands in the same Parts, or open the fame to a different Degree of Wideness, fo that different sorts of Juices iffue: As Smoking produces Phlegm ; Chewing, Spittle ; Salt or Allom, a Fluid as thin as Water. And it is likely the Case is the fame in our Stomachs, for stale Beer makes one sometimes puke an acid pungent Juice ; Oil, a bitter Phlegm, &c.

CHA P. XXXIII.
The Use of Snuff.

T HE Intention of taking Snuff is to The Use

open the Pores in the Nofe, &c. and of Snuff. let the Steam discharge the Juices out of the Glands, or to make one sneeze. Whe-'The Efther the Juices discharged there makefects. other Glands open, and discharge Juices fuccessively downward to the Lungs, and those Juices fall upon, and stop the Pores there, or whether some of the Particles

of

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