Vintersett poured from a flask of mercury - slippery, shiny, dark, and then the second flask poured vinegar-smelling kitchen, and finally poured salt crystals, so clean that they sparkled in the lamplight. Leaning over a mortar, he began to prepare a mixture. He spoke quickly and quietly as if accustomed to talk more with the apprentices and other alchemists than the king and his entourage: - It nigredo  - the initial substance. Ripley boil it during the day and night before the strain through a linen cloth, but I found that if I use the regulus of antimony  and a bit of arsenic, and the precipitate is almost ...
Mystery of Francis Bacon
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