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Rh and Countries where the Infection rages, being delivered from all Apprehensions of catching afterwards the highest and most fatal Contagion? Is not this, I say, as reasonable, as that the Matter taken from one that lyes ill of the gentlest and most kindly Small-Pox, should propagate only that Sort, and not the dangerous? If this Arguing be not close and conclusive, let the Weakness of it, and the Disparity of Reason, be made appear: But if it be just and valid, then if the Inoculators are by their Operation highly useful and beneficial to the World, as their Promoters affirm, then, I say, I have refined upon that Invention, and have started a Practice of greater Importance, and far more extensive Benefit to Mankind, and shall leave it to them to make their Advantage of it.

But if, notwithstanding what I have alledged in this Dissertation, to discourage a Practice newly introduced into this Country, it shall still make its Way, and grow in Fashion; I have another Method of propagating the Small Pox, that is altogether as effectual, much more clean and decent, and which is freer from several Objections that lye against Inoculation, and that is the Conveyance or Communication of the Small-Pox from one to another, by a voluntary and designed Infection, which is this: Let any one, desirous to catch the Contagion, be carried to a sick Person when the Pustules are filling, or fully ripe, let him sit by the