In this book, Dr. Lisiewski delves into the hitherto unknown role Israel Regardie played in the world of Practical Laboratory Alchemy: not the world of idle speculation and so-called inner alchemy, but the realm of the test tube and the Soxhlet Extractor. Revealed for the first time are Regardie's own private alchemical experiments, his intense interaction with Frater Albertus of the Paracelsus Research Society, and later, with the author himself. All is laid plain, taken from Dr. Lisiewski's extensive personal notes and recollections of his lengthy association with both men. Learn of the first meeting between Regardie and Frater Albertus; their involvement with the Rosicrucian Order and years of struggle in Alchemy; and alchemical work they and the author explored. Such work includes preparation of the Ancient Planetary and Antimony Tinctures; the Herbal Stone; as well as the darkly fantastic processes of miniature animals and the Homunculus. With an extensive Introduction by Mark Stavish, well-known author and Director of the Institute for Hermetic Studies, this book is destined to become the definitive work on Israel Regardie and his virtually unknown role in the practice of the Secret Art and Science that is Laboratory Alchemy, while revealing processes in the practical application of this occult work that has never appeared in print before!