François Jollivet-Castelot (1874-1937) was a French occultist and alchemist. A proponent of hyperchemistry, a discipline combining metaphysics and operative chemistry, he taught hylozoism, a monistic doctrine according to which matter, soul, life, and energy are all one; everything in nature is constantly evolving and transforming. This book brings together his hyperchemical study "Chemistry and Alchemy" and his treatise on the Great Alchemical Work.