of the laboratory fitted itself exactly to this phase of my mind. The wonders it displayed, the endless combinations and transformations it effected, were as marvellous as any that imaginative fiction could devise; but even these were nothing compared to the mysterious influence of the place itself upon my nervous system, particularly when I found myself there alone. In the tales with which my head was filled, many of them the wild fancies of Grimm, Hoffman, or Musæus, nothing was more common than to read how some eager student of the black art, deep in the mystery of forbidden knowledge, had, by some chance combination, by some mere accidental admixture of this ingredient with that, suddenly arrived at the great secret, that terrible mystery which for centuries and centuries had evaded human search. How often have I watched the fluid as it boiled and bubbled in the retort, till I thought the air globules, as they came to the surface, observed a certain rhythm and order. Were these, words? Were they symbols of some hidden virtue in the liquid? Were there intelligences to whom these could speak, and thus reveal a wondrous history? And then, again, with what an intense eagerness have I gazed on the lurid smoke that arose from some smelting mass, now fancying that the vapor was about to assume form and substance, and bow imagining that it lingered lazily, as though waiting for some cabalistic word of mine to give it life and being? How heartily did I censure the folly that had ranked alchemy amongst the absurdities of human invention! Why, rather, had not its facts been treasured and its discoveries recorded, so that in some future age a great intelligence arising might classify and arrange them, showing at least what were practicable and what were only evasive. Alchemists were, certainly, men of pure lives, self-denying and humble. They made their art no stepping-stone to worldly advancement or success; they sought no favor from princes, nor any popularity from the people; but, retired and estranged from all the pleasures of the world, followed their one pursuit, unnoticed and unfriended. How cruel, therefore, to drag them forth from their lonely cells, and expose them to the gaping crowd as devil worshippers! How inhuman to denounce men whose only crimes were lives of solitude and study! The last words of Peter von Vordt, burned for a wizard, at Haarlem, in 1306, were, “Had they left this poor head a little longer on my shoulders, it would have done more for human happiness than all this bonfire!”