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Updated: June 7, 2025
He takes the example of heating sulphur or brimstone: "Exposed to a moderate fire in subliming pots, it rises all into dry, and almost tasteless, flowers; whereas being exposed to a naked fire, it affords store of a saline and fretting liquor."
These piñas are then carefully weighed and put into a subliming furnace, Figs. 5 and 6, in order to drive off the rest of the mercury, the silver being subsequently run into bars. About four ounces of mercury are lost for every pound of silver made.
The alchemist acted as a sort of conscience to the metals, minerals, salts, and other substances he submitted to the processes of his laboratory. He treated them as a wise physician might treat an ignorant and somewhat refractory patient. "I know what you want better than you do," he seems often to be saying to the metals he is calcining, separating, joining and subliming.
They were constantly distilling, incinerating, subliming, heating, in order that the spirit, or inner kernel of things, might be obtained. They took for granted that the action of fire was to simplify, and that simplification proceeded whatever might be the nature of the substance which was subjected to this action.
From hence they thought themselves obliged to dispose their citizens into such classes, and to place them in such situations in the state, as their peculiar habits might qualify them to fill, and to allot to them such appropriated privileges as might secure to them what their specific occasions required, and which might furnish to each description such force as might protect it in the conflict caused by the diversity of interests that must exist, and must contend, in all complex society: for the legislator would have been ashamed that the coarse husbandman should well know how to assort and to use his sheep, horses, and oxen, and should have enough of common sense not to abstract and equalize them all into animals, without providing for each kind an appropriate food, care, and employment, whilst he, the economist, disposer, and shepherd of his own kindred, subliming himself into an airy metaphysician, was resolved to know nothing of his flocks but as men in general.
The subliming furnaces are ranged in a row, and communicate by lines of rails with the weigh-house.
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