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vided into two species, the distinct and confluent ; so we have shewo two sorts of eruptions or tumours likewise to attend the plague. In the first and mildest kind of the finall-pox the pustules rise high above the surface of the skin, and contain a digelted pus : but in the other, the pustules lie flat, and are filled with an indigested fanies, The two kinds of critical tumours in the plague are yet more different. In the most favourable case the morbific matter is thrown upon fome of the softest glands near the surface of the body, as upon the inguinal, axillary, parotid, or maxillary glands : the first appearance of which is a small induration, great heat, redness, and sharp pain near those glands. These tumours, if the patient recover, like the pustules of the distinct small-pox, come to a just fuppuration, and thereby discharge the disease. In worse cases of the distemper, either instead of these tumours, or together with them, carbuncles are raised. The first appearance of them is a very small indurated tumour, not situate near any of the forementioned glands, with a dusky redness, violent heat, vast pain, and a blackish spot in the middle of the tumour. This spot is the beginning of a gangrene, which spreads itself more and more as the tumour increases.

But, besides the agreement in these critical discharges, the two distempers have yet a more manifest likeness in those livid and black spots, which are frequent in the plague, and the signs of speedy death : for the same are sometimes found to attend the smallpox with as fatal a consequence; nay, I have seen cases, when almost every pustule has taken this appearance. Moreover, in both diseases, when emi

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nently malignant, blood is sometimes voided by the mouth, by urine, or the like *. And we may farther add, that in both death is usually caused by mortifications in the viscera. This has constantly been found in the plague by the physicians in France; and I am convinced, from accounts 1 þave by me, of the dissection of a great many who had died of the small pox, that it is the fame in that distemper.

This analogy between the two diseases, not only shews us, that we cannot expect to cure the plague any more than the small-pox, by antidotes and specific medicines; but will likewise direct us in the cure of the distemper, with which we are less acquainted, by the methods found useful in the other disease, which is more familiar to us.

In short, as in the small-pox, the chief part of the management consists in clearing the primæ viæ in the beginning ; in regulating the fever ; and in promoting the natural discharges : fo in the plague the fame indications will have place. The great difference lies in this, that in the plague the fever is often much more acute than in the other distemper; the stomach and bowels are sometimes inflamed ; and the ernptions require external applications, which to the pustules of the finall-pox arę not necessary,

When the fever is very, acute, a cool regimen commonly fo beneficial in the small-pox, is here still inore necessary. But whenever the pulle is languid, and the heat not excessive, moderate cordials must be used.

The disposition of the stomach and bowels, to be * Vid. obferv. et reflex. sur la peste de Marseilles, P: 333

inflamed,

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inflamed, makes vomiting not fo generally fafe in the plague as in the small-pox. The most gentle emeties ought to be used, none better than ipecacuanha; and great caution must be had, that the stomach or bowels are not inflamed, when they are administered : for if they are, nothing but certain death can be expected from them : otherwise, at the beginning, they will be always useful. Therefore upon the first illness of the patient it must carefully be considered, whether there appear any fymptoms of an inflammation having seized these parts : if there are any marks of this, all vomits must be omitted ; if not, the stomach ought to be gently moved.

The eruptions, whether glandular tumours, or carbuncles, must not be left to the course of nature, as is done in the small-pox; but all diligence must be used, by external applications, to bring them to suppurate. Both these tumours are to be treated in most respects alike. As soon as either of them ap. pears, fix a cupping-glass to it without scarifying ; and when that is removed, apply a fuppurative cataplasm, or plaster of warm gums.

If the tumours do not come to suppuration, which the carbuncle feldom or never does; but if a thin ichor or malter exudes through the pores ; or if the tumour feel soft to the touch; or lastly, if it has a black crust upon it, then it must be opened by incifion, either according to the length of the tumour, or by a crucial section.

And if there is any part mortified, as is usual in the carbuncle, it must be scarified. This being done, it will be necessary to stop the bleeding, and dry up the moisture with an ac?ual cautery, dressing the wound afterwards with

dosfils,

dossils, and pledgets spread with the common digestive made with terebinth. cum vitel. ov. and dipped in a mixture of two parts of warmed oil of turpentine, and one part of sp. fal. ammon. or in balf, terebinth, and over all must be put a cataplafin of theriac. Lond.

The next day the wound ought to be well bathed with , a fomentation made of warm aromatic plants, with spirit of wine in it; in order, if possible, to make the wound digest, by which the soughs will separate. After this the ulcer may be treated as one from an ordinary abfcefs.

Farther, in the glandular tumours, when they suppurate, we ought not to ait, till the matter has made its way to the outer skin, but to open it as soon as it is risen to any bigness: because thefe tumours begin deep in the gland, and often mortify, before the fuppuration has reached the skin, as the physicians in France have found upon diffecting many dead bodies.

This is the method in which the plague must be treated in following the natural course of the distemper. But the patient in most cases runs so great ha. zard in this way, notwithstanding the utmost care, that it would be of the greatest service to mankind under this calamity, if some artificial discharge for the corrupted humours could be found out, not liable to fo great hazard, as the natural way. To this purpose large bleeding and profuse sweating are recommended to us upon some experience.

Dr Sydenham tried both these evacuations with good success, and has made two very judicious remarks upon them. The first is, that they ought

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not to be attempted unless in the beginning of the sickness, before the natural course of the distemper has long taken place : because otherwise we can only expect to put all into confusion without any advantage.

His other obfervation is, that we cannot ex• pect any prosperous event from either of these evacuations, unless they are very copious; there being no prospect of furmounting so violent a malignity without bolder methods than must be taken in ordinary cases.

As for bleeding, by fome accounts from France, I have been informed, that fome of the physicians there have carried this practice so far, as, upon the first day of the distemper, to begin with bleeding about twelve ounces, and then to take away four or five ounces every two hours after. They pretend to extraordinary success from this method, with the afsistance only of cooling ptisans, and such like drinks, which they give plentifully at the same time. Such profuse bleeding as this may perhaps not suit with our constitutions so well as with theirs ; for in common cases they use this practice much more freely than we : yet we must draw blood with a more liberal hand than in any other case, if we expect success from it. I shall excuse myself from defining exactly how large a quantity of blood is requisite to be drawn, for want of particular experience : but I think fit to give this admonition, that, in fo desperate a cafe as this, it is more prudent to run fome hazard of exceeding, than to let the patient perish for want of due evacuation.

As for sweating, which is the other method proposed, it ought, no doubt, to be continued without intermission full twenty-four hours, as Dr Sydenham

advises.

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