This collection of alchemical works includes three works by famous figures from the world of French occultism of the late 19th and early 20th centuries. Papus cites as his main argument the reliability of historical evidence of transmutation and describes the ingenious means of deception used by charlatan alchemists. Albert Poisson, with fierce devotion to his work, instructs the basics of alchemical practice in letters to his anonymous “brother in Hermes.” Emile Delobel, an adherent of hyperchemistry – a kind of synthesis of scientific chemistry and traditional alchemy, cites contemporary discoveries in the field of spectral analysis, stellar chemistry and a number of related scientific disciplines in order to convince the doubting reader of the reliability of the alchemical theory. These treatises are published in Russian for the first time. The book will be of interest to all researchers and connoisseurs of Western European esotericism and, in particular, alchemy.