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Updated: May 22, 2025
Ardent victrices, et flammae pectora praebent, Imponuntque suis ora perusta viris." The day being come, she mounts on horseback, dressed as fine as at her wedding, and with a cheerful countenance says she is going to sleep with her spouse, holding a looking-glass in her left hand and an arrow in the other.
But yet I much Question whether that Rule delivered by divers, as well Philosophers as Chymists, adusta nigra, sed perusta alba, will hold as Universally as is presum'd, since I have several Examples to allege against it: For I have found that by burning Alablaster, so as both to make it appear to boyl almost like Milk, and to reduce it to a very fine Powder, it would not at all grow Black, but retain its Pure and Native Whiteness, and though by keeping it longer than is usual in the fire, I produced but a faint Yellow, even in that part of the Powder that lay nearest the top of the Crucible, yet having purposely enquired of an Experienced Stone-cutter, who is Curious enough in tryng Conclusions in his own Trade, he told me he had found that if Alabaster or Plaster of Paris be very long kept in a Strong fire, the whole heap of burnt Powder would exchange its Whiteness for a much deeper Colour than the Yellow I observ'd.
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