Pretiosa margarita novella de thesauro, ac pretiosissimo philosophorum lapide : artis huius divinae typus, et methodus: collectanea ex Arnaldo, Rhaymundo, Rhasi, Alberto, et Michaele Scoto

nor has all the Mercury exited, and the body will remain more subtle and blacker, and this repeat three times and the body will be discontinued and very black. Then receive it and place it in a small bottle, and pour over it as much of the oil aforementioned so that it becomes moistened, and close the vessel, and give a light fire for three days and it will be dried, and the earth will begin to whiten a little. Then pour over another oil (as before) and again with the same fire it will be dried and it will be whiter, and thus a third time. The fourth time, however, it will be in such whiteness that it seems to want to take away the sight, shining like the most perfect oriental pearls. Then proceed with our air, salt, and gum, which will become one. The fire, however, must be tempered and does no harm, but [it is] better in dung the heat source often used in alchemical putrefaction.

TRULY, since it is worth the effort, let us attempt to pursue by a certain reason, which they call practice, not only the knowledge but another thing by which the proposal is understood in finishing the work; to open this part also, as far as the subject of the matter allows. Therefore, mix the simple C with the quadruple D through G first, and in a glass vessel, compose it having fused it as best as possible, then having smeared it with glue, close its mouth, and place it upon a very thin fire and cook continuously until C through H has arrived at F and likewise to I. And if the color is black to you, which, however, you will see imitating not black ink, but rather premature Punic apples pomegranates. When you see this, know that C and D are wandering through H, F, I, and P, and an indissoluble treaty has been fused between C and D, and they have been turned into themselves in turn, with the same heat continuing from the outside; C and D, having entered into L and I, will strive up to M through K. Since that black color (I do not know by what means) is gradually turned into whiteness, then into yellow K, and lastly into a most precious redness:

The remaining text is fragmented and discusses the final stages of the process, mentioning the timing and the temperament of the work.