Although the works of Michael Servetus may never be met with, it has always been well known that they were printed, and moreover where they were printed. Before the publication of the two modern editions of the "Cymbalum Mundi," composed by Bonnaventure de Perrieres, writing under the assumed name of Thomas du Clevier, who says that he had translated it from the Latin, and of which work only two ancient copies remain, the one in the King's library and the other in that of M. Bigot at Rouen;--before the publication of the the modern editions, it was an ascertained fact that the work had been printed, and the date and name of the bookseller were known. The case is exactly the same as regards "The Blessings of Christianity, or the Scourge of the Faith," the author of which, Geoffrey Vallee a native of Orleans, was hanged and burned at Greve, on the 9th February 1573, after having adjured his errors. It is a small octavo work of thirty pages, without date, or the name of the place where it was printed; a trifle, feebly reasoned, and now become so rare that perhaps the copy belonging to Monsieur the Abbe d'Estrees is the only one to be found. But although all these works had absolutely perished, no one could doubt their previous existence, the facts on record concerning them being as true, as those concerning 'The Three Impostors' are apocryphal. ANSWER TO THE DISSERTATION OF MONSIEUR DE LA MONNOYE ON THE WORK ENTITLED "THE THREE IMPOSTORS."