In the year 1850 “A Suggestive Inquiry concerning the Hermetic Mystery and Alchemy, being an attempt to recover the Ancient Experiment of Nature,” was published anonymously in London by a lady of high intellectual gifts, but was almost immediately withdrawn for reasons unknown, and which have given occasion, in consequence, to several idle speculations. This curious and meritorious volume, quaintly written in the manner of the last century, originated the views which are in question and opened the controversy. Fifteen years after the appearance of the “Suggestive Inquiry,” an American writer, named Hitchcock, after apparently independent researches arriving at parallel conclusions, made public, also anonymously, in the year 1865, some “Remarks on Alchemy and the Alchemists,” in a small octavo volume of very considerable interest. A psychic interpretation was placed by the previous author on the arcana of Hermetic typology, and Mr Hitchcock, by adopting a moral one, brought the general subject within the reach of the most ordinary readers, and attracted considerable attention in consequence. The views thus enunciated have filtered slowly through, and, combined with the Paracelsian theory of the psychic manufacture of material gold by the instrumentality of the interior magnes, have considerably influenced the revived occultism of the present day. The question in itself, taken at its lowest standpoint, is one of the most curious to be found within the whole circle of esoteric archæology; and for students whose interest in the great alchemical mystery is of another than antiquarian kind, it is truly of palmary interest, and of supreme importance. In an account of the lives and labours of the Hermetic adepts, it calls for adequate consideration; and, after careful researches, I believe myself to have discovered a true alchemical theory which will be equally acceptable to all schools of interpretation.