""A Sketch of Alchemical Theory"" by M.M. Pattison Muir is a comprehensive guide to the history and principles of alchemy. The book explores the origins of alchemy, its evolution through the ages, and the various theories and practices associated with it. It examines the fundamental principles of alchemy, such as the transmutation of metals, and the search for the philosopher's stone, as well as its connections to spirituality and mysticism. The author...