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LEt a Cylindrical Flat∣bottom Vessel be filled with Water, and let it be tried, in what time one Lamp or Candle would make the water boyl through, or come up to its greatest heat: Then see, in how much lesser time, 2, 3, or 4 more like fires will hasten the same effect. I
cannot speak positively hereof, but know from se∣veral Observations, that the Acceleration abovesaid shall not be made in Arith∣metical Proportion; for∣asmuch as I know, that in Fire-works great Fires are more profitable than small; as in Brewers Coppers, and Iron-works may be seen; wherein double Fires pro∣duce more than double dis∣patch or advantage. I shall therefore suspend this mat∣ter, and pass to the measu∣ring
of the Spirituosity of Liquors, or in what pro∣portions several Liquors contein more or less of in∣flameable or ardent parts. Now in this case I conceive, the Consideration of Roots and Squares is also mate∣rial; for I understand by strength or multitude of Spirits, the Space, greater or lesser, into which such Liquors will be rarified, or will fill with Spirits: As for example, if a Pint of Water rarified into Va∣pour
will fill a Globe but of 3 foot Diameter; and a Pint of rectified Spirit of Wine will fill a Globe of six foot diameter, or 8 times as large as that of Water; I shall say, that there is 8 times as much Spirit or Va∣pour in one as in the other. But if these Liquors were put into open Lamps or Vessels, there the space in which the Spirits rise, are the Roots, whose Squares do shew the Spirituosity of those Liquors: Ex. gr. Let
there be a Lamplike Vessel of common Aquavitae; in which place a Week as high as the same will burn by the rising of the Spirit un∣to it, suppose an inch a∣bove the surface of the Li∣quor: Now, let there be a like Equal vessel with such a Spirit, as will rise up higher, suppose to a Week placed two inches above the Surface; in this case, I say, that the latter Liquor is quadruple in strength or extent of Spirit to the for∣mer;
for 'tis certain, that as the Spirit riseth double upwards, so also it emitteth or rarifieth it self double also sideways; and conse∣quently the quantity of the Spirit or Vapour must be quadruple; and so of other proportions.