Much has been said, of late years, in favour of the application of warm olive oil to the body in the plague, and a wish has been expressed, by some people, that its efficacy might be tried in the yellow fever. Upon examining the account of this remedy, as published by Mr. Baldwin, three things suggest themselves to our notice. 1. That the oil is effectual only in the _forming_ state of the disease; 2. That the friction which is used with it contributes to excite the torpid vessels of the skin; and 3. That it acts chiefly by depleting from the pores of the body. From the unity of the remedy of depletion, it is probable purging or bleeding might be substituted to the expensive parade of the sweat induced by the warm oil, and the smoke of odoriferous vegetables. But I must not conceal here, that there are facts which favour an idea, that oil produces a sedative action upon the blood-vessels, through the medium of the skin. Bontius says it is used in this manner in the East-Indies, for the cure of malignant fevers, after the previous use of bleeding and purging. It seems to have been a remedy well known among the Jews; hence we find the apostle James advises its being applied to the body, in addition to the prayers of the elders of the church[5]. It is thus in other cases, the blessings of Heaven are conveyed to men through the use of natural means. [5] Chapter v. verse 14. During the existence of the premonitory symptoms, and before patients were confined to their rooms, a gentle purge, or the loss of a few ounces of blood, in many hundred instances, prevented the formation of the fever. I did not meet with a single exception to this remark. Fevers are the affliction chiefly of poor people. To prevent or to cure them, remedies must be cheap, and capable of being applied with but little attendance. From the affinity established by the Creator between evil and its antidotes, in other parts of his works, I am disposed to believe no remedy will ever be effectual in any general disease, that is not cheap, and that cannot easily be made universal. It is to be lamented that the greatest part of all the deaths which occur, are from diseases that are under the power of medicine. To prevent their fatal issue, it would seem to be agreeable to the order of Heaven in other things, that they should be attacked in their forming state. Weeds, vermin, public oppression, and private vice, are easily eradicated and destroyed, if opposed by their proper remedies, as soon as they show themselves. The principal obstacle to the successful use of the antidotes of malignant fevers, in their early stage, arises from physicians refusing to declare when they appear in a city, and from their practice of calling their mild forms by other names than that of a mortal epidemic. I shall now say a few words upon the success of the depleting practice in this epidemic.