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With Sulphurs.
I Found one Furnace most curiously built, in which all degrees of heat ima∣ginable, by the Art of man, might be kept with one fire; in which was set a multitude of curious Glasses, in which were several Matters, some digesting, others subliming, others distilling, others calcining, and about the Glasses and the Furnace was written this of Geber, Per Deum Sulphur est omne illud illuminans quod est supra terram. By this I knew, that Sulphur was the subject on which was wrought; and indeed with so great cunning, that I could not but admire the ingenuity of the men: and knowing that what a man prizeth, (though it be a trifle) yet to spoil or destroy that would be an injury, I meddled not with any Glass, (for indeed there were La∣bourers that fled not, because they knew nothing, but only wrought as they were directed:) and when I came, they could not perceive that I had any Candle in my hand, and wondred their Masters