There is not an acrimony in the human body but what may be corrected by this universal antacrid medicine, if properly administered. In venereal cases, it should be one of the first, and the principal remedy throughout the cure; but care should be taken that the quantity be small, and adapted to the strength of the patient, and to prevent it from falling on the salivary glands, and thence to produce salivation. The dose should never exceed one grain, a quantity sufficient for twenty-four hours, except where there is evacuation, or other discharges of the body required; in which case it may be occasionally increased, especially in malignant fluxes, or when purges are given, or in other evacuations. It may be made up in many forms; the best, however, is in pills, with a little flower and water, &c. or it may occasionally be mixed up with other medicines, as I shall frequently have occasion to speak of. O. _Precipitate_: _This is made up of equal weight of Quicksilver and compound Aqua Fortis, well mixed, evaporated to dryness, in a broad bottomed vessel, by a sand heat, according to the art of chymistry; in which operation it turns red._ This is an excellent medicine, applied to all kinds of ulcers, as it will correct the malignity of the matter, take off fungous flesh, bring on a kind suppuration. It will also clear the skin from all kinds of breaking-out, and perfectly destroy lice, nits, &c. It should, however, like the former, be levigated very fine, for thereby it loses greatly its sharpness, and becomes more efficacious. It should also be mixed with some cerate, ointment, or other dressing, and never, or very seldom, be used by itself, as I shall hereafter point out. P. _Mercurial Ointment_: _Take hogs lard eight ounces, purified quicksilver one ounce, Venice turpentine two drachms; rub the mercury into the turpentine in a mortar, till the quicksilver disappears, then mix the whole together._ This is popularly called Unction, and peculiarly useful in venereal cases, as also to destroy a particular vermin called _Crab-Lice_, and other foulnesses. But I must here give a caution against the too free use of mercurial ointment, as it is not only apt to bring on salivation, but if the mercury is adulterated with lead, (as sometimes is the case) it is liable to occasion many incurable pains in the limbs; and by this the remedy may prove worse than the disease. Q. _Rhubarb._ This is a necessary article in all kind of fluxes, and relaxations in the bowels; for, besides that it purges gently, it has withal such an astringency as to brace up the weakened vessels, and to restore their proper tone again. The dose of rhubarb is one scruple; which should be mixed with some fine chalk, or _Stomachic Powder_. (M.) about equal quantity, particularly in the beginning of fluxes.