CHAP. VII. Of the Decoction, Contrition, and washing of the stone.
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Roger Bacon
THou art moreouer to vnderstand, that Decoction, contrition, cribatiõ, mundification, and ablution, with sweet waters is very necessary to this secret and mastery: so that he who will bestow any paines herein, must cleanse it very well, and wash the blacknesse from it, and darknes that appeareth in his operation, and subtiliate the bodie as much as hee can, and afterwarde mingle therwith the soules dissolued, and spirits cleansed, so long as he thinke good.