When Casanova’s Memoirs were first published, doubts were expressed as to their authenticity, first by Ugo Foscolo (in the Westminster Review, 1827), then by Querard, supposed to be an authority in regard to anonymous and pseudonymous writings, finally by Paul Lacroix, ‘le bibliophile Jacob’, who suggested, or rather expressed his ‘certainty,’ that the real author of the Memoirs was Stendhal, whose ‘mind, character, ideas and style’ he seemed to recognise on every page. This theory, as foolish and as unsupported as the Baconian theory of Shakespeare, has been carelessly accepted, or at all events accepted as possible, by many good scholars who have never taken the trouble to look into the matter for themselves. It was finally disproved by a series of articles of Armand Baschet, entitled ‘Preuves curieuses de l’authenticite des Memoires de Jacques Casanova de Seingalt,’ in ‘Le Livre,’ January, February, April and May, 1881; and these proofs were further corroborated by two articles of Alessandro d’Ancona, entitled ‘Un Avventuriere del Secolo XVIII., in the ‘Nuovo Antologia,’ February 1 and August 1, 1882. Baschet had never himself seen the manuscript of the Memoirs, but he had learnt all the facts about it from Messrs. Brockhaus, and he had himself examined the numerous papers relating to Casanova in the Venetian archives. A similar examination was made at the Frari at about the same time by the Abbe Fulin; and I myself, in 1894, not knowing at the time that the discovery had been already made, made it over again for myself. There the arrest of Casanova, his imprisonment in the Piombi, the exact date of his escape, the name of the monk who accompanied him, are all authenticated by documents contained in the ‘riferte’ of the Inquisition of State; there are the bills for the repairs of the roof and walls of the cell from which he escaped; there are the reports of the spies on whose information he was arrested, for his too dangerous free-spokenness in matters of religion and morality. The same archives contain forty-eight letters of Casanova to the Inquisitors of State, dating from 1763 to 1782, among the Riferte dei Confidenti, or reports of secret agents; the earliest asking permission to return to Venice, the rest giving information in regard to the immoralities of the city, after his return there; all in the same handwriting as the Memoirs. Further proof could scarcely be needed, but Baschet has done more than prove the authenticity, he has proved the extraordinary veracity, of the Memoirs. F. W. Barthold, in ‘Die Geschichtlichen Personlichkeiten in J. Casanova’s Memoiren,’ 2 vols., 1846, had already examined about a hundred of Casanova’s allusions to well known people, showing the perfect exactitude of all but six or seven, and out of these six or seven inexactitudes ascribing only a single one to the author’s intention.