Among the best brief masterpieces of fiction are Lytton's _The Haunters and the Haunted_, and Thackeray's _Notch on the Axe_ in _Roundabout Papers_. Both deal with a mysterious being who passes through the ages, rich, powerful, always behind the scenes, coming no man knows whence, and dying, or pretending to die, obscurely--you never find authentic evidence of his decease. In other later times, at other courts, such an one reappears and runs the same course of luxury, marvel, and hidden potency. Lytton returned to and elaborated his idea in the Margrave of _A Strange Story_, who has no 'soul,' and prolongs his physical and intellectual life by means of an elixir. Margrave is not bad, but he is inferior to the hero, less elaborately designed, of _The Haunters and the Haunted_. Thackeray's tale is written in a tone of mock mysticism, but he confesses that he likes his own story, in which the strange hero, through all his many lives or reappearances, and through all the countless loves on which he fatuously plumes himself, retains a slight German-Jewish accent. It appears to me that the historic original of these romantic characters is no other than the mysterious Comte de Saint-Germain--not, of course, the contemporary and normal French soldier and minister, of 1707-1778, who bore the same name. I have found the name, with dim allusions, in the unpublished letters and MSS. of Prince Charles Edward Stuart, and have not always been certain whether the reference was to the man of action or to the man of mystery. On the secret of the latter, the deathless one, I have no new light to throw, and only speak of him for a single reason. Aristotle assures us, in his _Poetics_, that the best known myths dramatised on the Athenian stage were known to very few of the Athenian audience. It is not impossible that the story of Saint-Germain, though it seems as familiar as the myth of Oedipus or Thyestes, may, after all, not be vividly present to the memory of every reader. The omniscient Larousse, of the _Dictionnaire Universel_, certainly did not know one very accessible fact about Saint-Germain, nor have I seen it mentioned in other versions of his legend. We read, in Larousse, 'Saint-Germain is not heard of in France before 1750, when he established himself in Paris. No adventure had called attention to his existence; it was only known that he had moved about Europe, lived in Italy, Holland, and in England, and had borne the names of Marquis de Montferrat and of Comte de Bellamye, which he used at Venice.'