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 68 Of the primary Seat Recruits of Food ; as is their Languor, Pro*- flration, and utter Extinction, from the Want of it ; fo that howfbever they were firft generated in the original, they owe their Confer vatiori and Vitality to the JSIou^ riihment continually brought in-, and al- though in a State of perfect Health they are never changed by that, yet they con- tinually act upon that after various Ways, bringing it from a crude, recrementiciou s State, into a noble Juice, or rich fpiritua-1 Balfam, retaining its ideal Character : And hence it comes about, that although there is a daily Waft© of Spirits, yet there is no Want, becaufe Nature is continually, while Things are in Health, making more :, in- fomuch that after a due Conftitution of Spirits is obtained, they of themfelves are the main Efficients in making more, as one Light is kindled by another, and as the Blood it felf is the chief Inftrument hi Sanguification, or making more Blood. IT is a Matter indeed of much more Difficulty to determine, how Particles from a grofs Origin, mould be raifed to fb great Volatility and Finenefs } but this is very certain, that when they are elaborated in the mofl perfect Manner, they exceed even the