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MOnsieur de L'oberie, and Mons. de l•• No••ë wrought the first Process upon ☽ (which is after those upon ☉) that is in the handgrif of Bas. Valent. which maketh the fourteenth Book of his Test. But instead of a due Calx of ☽, they took one made with A. F. (the ordinary made of Vitriol and Nitre) and Precipitated it with Salted {fire} (Salt dissolved in Common {fire}) and for
the rest, did as the Process teacheth; which was Reported to me thus. Put upon this Calx of ☽ (they had ℥iv.) (after it is well dulcified by often ablutions with fair {water}, till no Saltness or Spirits appear to remain) so much fresh A. F. as to swim four fingers breadth over the Calx of ☽: Distill off the A. F. then cohobate again; do thus four times: At the last distillation give strong {fire}, you will have a gray substance like Mar∣ca••ite. Beat it to Powder, and put distilled Vinegar upon it, to swim four fingers over it; digest two days, then boyl it three or four hours, after which, distill away all the distilled Vin. and there should have remained blew Crystals, but they were white without tincture: So having failed in their expecta∣tion, they would reduce their ☽ back in a body, therefore dulcified it well with distil∣led Vinegar and fair {water}, and put it into a Cruc. to melt with a little Borax, and a little Nitre, and a thick smoak flew away, and in the end there remained but ℥ij. of ☽.
Consider, if this course, and, if need be, digesting longer (at last) with distilled Vi∣negar and Oyl of Tartar, {sal armoniac}, and Salt of Urine, &c. Then distilling with Tartar and Calx-vive, might not make ☿ of ☽.