and in about 80 days will be fixed.
It has all the Virtues of the Crystals of Silver, cures all diseases of the Head, and is a great specifick, for the Cure of the Falling-sickness: Dose a gr. iij ad vij.
16. Oleum Vitrioli Drusii, Oyl of Vitriol of Drusius.
℞ Vitriol, melt it in a well glaz'd earthen pan, calcine it till it is red, pouder it, and moisten it with S. V. put it into an Earthen Retort that will endure the Fire, encrease the fire by degrees, till it come to the height, for 3 days, or until the Receiver (having been full of Fumes) becomes clear, and the Spirit or Oyl comes: then according to Art, rectify it, by separating the S.V. spirit of Vitriol, and oyl, one from another.
It cools in all Feavers, re∣freshes, resists putrefaction, and the Plague, breaks, dis∣solves and expels the stone: dose à gut. iiij ad xvj. in any convenient Vehicle: for its other vertues, see our Dispen∣satory, lib. 3. cap. 11. sect. 78.
17. Oleum Ferri per De∣liquium, Oyl of Iron by Dis∣solution.
℞ Choice spirit of salt, spi∣rit of Vitriol, A. distill them over together, looking well to the Fire, lest the glass break: in this double spirit dissolve clean filings of needles: filter the solution, put it into a Glass Cucurbit, with the head of an Alembick, to which lute a large receiver; then give fire by degrees, distill first the Flegm, then (with a stron∣ger fire) the spirits, so long as any will come over: after which let it cool, and in the Alembick you shall find sto∣wers, which in a cool and moist Air, will dissolve into a pure red Oyl.
It is a secret in curing the Piles and Hemorrhoids, as also Ficus in ano, Condylo∣mata, Clefts, and other dis∣eases of the Fundament.
18. Oleum Mercurii sub∣limati, Oyl of Mercury sub∣limed.
℞ Quicksilver well purifi∣ed, sublime it from Vitriol and Niter, A. what sublimes red (and lies upon the Caput