contempt from the follies of our predecessors. The study of the errors into which great minds have fallen in the pursuit of truth can never be uninstructive. As the man looks back to the days of his childhood and his youth, and recalls to his mind the strange notions and false opinions that swayed his actions at that time, that he may wonder at them; so should society, for its edification, look back to the opinions which governed the ages fled. He is but a superficial thinker who would despise and refuse to hear of them merely because they are absurd. No man is so wise but that he may learn some wisdom from his past errors, either of thought or action; and no society has made such advances as to be capable of no improvement from the retrospect of its past folly and credulity. And not only is such a study instructive: he who reads for amusement only will find no chapter in the annals of the human mind more amusing than this. It opens out the whole realm of fiction—the wild, the fantastic, and the wonderful, and all the immense variety of things "that are not, and cannot be; but that have been imagined and believed."
For more than a thousand years the art of alchymy captivated many noble spirits, and was believed in by millions. Its origin is involved in obscurity. Some of its devotees have claimed for it an antiquity coeval with the creation of man himself, others, again, would trace it no further back than the time of Noah. Vincent de Beauvais argues, indeed, that all the antediluvians must have possessed a knowledge of alchymy; and particularly cites Noah as having been acquainted with the elixir vitæ, or he could not have lived to so prodigious an age, and have begotten children when upwards of five hundred. Lenglet du Fresnoy, in his History of the Hermetic Philosophy, says, "Most of them pretended that Shem, or Chem, the son of Noah, was an adept in the art, and thought it highly probable that the words chemistry and alchymy are both derived from his name." Others say, the art was derived from the Egyptians, amongst whom it was first founded by Hermes Trismegistus. Moses, who is looked upon as a first-rate alchymist, gained his knowledge in Egypt; but he kept it all to himself, and would not instruct the children of Israel in its mysteries. All the writers upon alchymy triumphantly cite the story of the golden calf, in the 32d chapter of Exodus, to prove that this great lawgiver was an adept, and could make or unmake gold at his pleasure. It is recorded, that Moses was so wrath with the Israelites for their idolatry, "that he took the calf which they had made, and burned it in the fire, and ground it to powder, and strewed it upon
