quor is ascrib'd, might be extracted and imbib'd, and so the Calx freed from them; then on the remaining powder fresh water was often poured, that all adhering reliques of Salt might be wash'd off. After this, the thus dulcified Calx, being again well dried, was mingled with an equal weight of powder'd Sal Armoniac, and having with a strong fire melted the mass, the mixture was poured out; and being afterwards beaten to powder, having given it a competent time to grow cold, we put two or three ounces of it into a wide-mouthed Glass, and pouring water upon it, within about a minute of an hour the mixture grew warm, and quickly attain'd so intense a Heat, that I could not hold the Glass in my hand. And though this Heat did not long last at the same height, it continued to be very sensible for a considerable time after.
EX-
