tentimes there will not be one pound of Ashes remaining. And this is the first Condition required to Heat.
The second is this, that the determinations be very various, some particles moving towards the right, some to the left, hand, some directly upwards, some downwards, and some obliquely, &c. This variety of determinations appears to be in hot bodies both by some of the Instances newly mention'd, and especially that of flame, which is a body; and by the diffusion that metals acquire, when they are melted, and by the operations of Heat that are exercis'd by hot bodies upon others, in what posture or scituation soever the body to be heated be applied to them. As a thoroughly ignited Coal will appear every way red, and will melt wax, and kindle brimstone, whether the body be apply'd to the upper or to the lower, or to any other part of the burning Coal. And congruously to this Notion, thoughair
