THE HERMETIC MUSEUM would seem to represent a distinctive school in Alchemy, not altogether committed to certain modes and terminology which derived most of their prestige from the past, and sufficiently enigmatical as it was, still inclined to be less obscure and misleading than was the habit of the older masters. For it belonged to a period which had inherited a bitter experience of the failures, impostures, and misery surrounding the Magnum Opus and its mystical quest, which was weary of unequipped experiment, weary of wandering "multipliers," and pretentious "bellows-blowers," while it was just being awakened to the conviction that if Alchemy were true at all, it was not to be learned from books, or, at least, from any books which had hitherto been written on the subject. Running through all the tracts which are comprised in the following volumes, the reader will recognize traces of a central claim in alchemical initiation-that the secrets, whatever they were, must be understood as the property of a college of adepts, pretending to have subsisted from time almost immemorial, and revealing themselves to the select and the few, while the literature, large as it is, appears chiefly as an instrument of intercommunication between those who knew. At the same time, it may also be regarded as a sign and omen to the likely seeker, an advertisement that there was a mystery, and that he must go further who would unravel it.