by Calcination, grind and mix these all well together, and put them into a Retort coated, and pour upon it one pound and a half of the following A. F.
Take Vitriol two pound, which reduce to one lb by Calcination, which put into a Retort, and pour upon it a good A. F. made of Vitriol and Nitre, Distill it S. A. and you shall have an A. F. fit for this Work, which having poured upon the said Matter, Distill it off, and it will be very ponderous. Break the Retort (being cold) and you will find on the sides of it, and up∣on the Caput Mortuum, a very red and pon∣derous Sublimate, which take off.
Take the half of the Caput Mortuum, and as much of Bay Salt decrepitated, re∣duce all to a fine Powder with the said Sub∣limate, and then put all into a new Retort, and pour upon it the Distilled A. F. Distill it as before, and the said A. F. will come off very red, and the Sublimate will be more red, and more ponderous than before, and will rise very high at this time. Keep this Water very carefully, break the Retort, and take both the Feces and Sublimate, and re∣duce it to Powder, and Sublime it by it self without A. F. and the Sublimate will mount but upon the surface of the Feces, which separate, and it will have acquired more