The Holy Guide (The R.A.M.S. Library of Alchemy) by Philip N Wheeler NEUF
51,05 €
John Heydon (1629 - 1667 or 1670) was an English Rosicrucian, alchemist, and attorney. He published more than ten books during the last twelve years of his life. There is an interesting section on sounds and harmonies: "We have also Sound-houses, where we practise and demonstrate all sounds, and their Generation.".
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