The contribution is a passage from the following book: “Libro que trata de las cosas, que traen de las Indias Occidentales, que sirven al uso de medicina, y de la orden qui se ha de tener en tomar la Rayz de Mechoacan etc. Hecho y copilado por el Doctor _Monardes_, medico de Sevilla. 1565.” (Book treating of Substances imported from the East Indies and used in Medicine, and of the Course to be observed in taking the Mechoacan Root, etc. Written and compiled by _Dr. Monardes_, Physician of Seville. 1565). This work treats of the drug “Guajac”, and lays down the American origin of Venereal Disease as confidently as if the Author had been on the spot when it happened! The value of the whole argument may be judged from this passage, “Our Creator willed that from that same country whence Venereal Disease (el mal de las buvas,—the malady of buboes) came, should come also the Means of its cure.” 36) _Pet. de Jurgenew_, Luis venereae apud veteres vestigia. Diss. inaug. Dorpati Livon. 1826. 54 S. 8. (_Pet. de Jurgenew_, “Traces of the Venereal Disease amongst the Ancients.” Medical Graduation Exercise, Dorpat (in Livonia) 1826. pp. 54. 8vo.). An industrious, partly critical, Collection of the passages connected with this subject down to Peter Martyr in chronological order, of which however perhaps only those given on given p. 11, though these are incomplete, from the “Lusus in Priapum” or “Priapeia” had not previously been noted. Comp. Recension by _Struver_ in _Rust’s_ and _Casper’s_ Krit. Repertor. Vol. XX. p. 141. 38) _Friedr. Alex. Simon_, Versuch einer kritischen Geschichte der verschiedenartigen, besonders unreinen Behaftungen der Geschlechtstheile und ihrer Umgegend, oder der örtlichen Lustübel, seit der ältesten bis auf die neueste Zeit, und ihres Verhältnisses zu der Ende des XV. Jahrhunderts erschienenen Lustseuche; nebst praktischen Bemerkungen über die positive Entbehrlichkeit des Quecksilbers bei der Mehrzahl jener Behaftungen, oder der sogenannten primairen syphilitischen Zufälle. Ein Beitrag zur Pathologie und Therapie der primairen Syphilis, für Aerzte und Wundärzte. I. Thl. Hamburg. 1830. XVIII. 253 S. II. Thl. 1831. XVI. 543 S. gr. 8. (_Friedr. Alex. Simon_, “Essay towards a Critical History of the different sorts of Infections, particularly of foul Infections, of the Sexual parts and their Neighbourhood, in other words of Local Venereal Maladies, from the earliest times to the most recent, and of their Relation to the Venereal Disease that made its appearance at the end of the XVth Century; together with Practical Remarks as to the positive Needlessness of Mercury in the case of the majority of those Infections, or the so-called primary Syphilitic Symptoms. A Contribution to the Pathology and Therapeutics of Primary Syphilis, for Physicians and Surgeons.” I Part. Hamburg 1830. pp. XVIII, 253. II Part. 1831. pp. XVI, 543. large 8vo.).