P R E F A C E .

of everything that occurs in the whole of Chemistry: I do not doubt that it will be very pleasant and agreeable to those who observe it properly: hoping thus, I remain occupied in laboring and researching the Chemical Art original: Chimise Konst; in the 17th century, the word "Art" was used to describe a combination of practical skill, scientific knowledge, and the "Great Work" of alchemy., for the benefit of the public,

Amsterdam in my Laboratory, November 12, 1692.