Professor F. C. de Sumichrast last night gave the last of his four illustrated public lectures on "Versailles," discussing as his special subject "The Passing of the Splendour." The lecturer most interestingly the important political events leading up to the death of Louis XV, the moral deterioration of the court during that reign, and the complications responsible for the growing aversion to the innocent and once popular Marie Antoinette. The comparatively simple court life enforced during the last days of Louis XIV, was followed, said Professor Sumichrast, by a natural reaction. During the period of social pomposity and court revelries in the following reign, the administration was wrested from the dissipated debauchee, Louis XV, passing first into the hands of the ministers, and then into those of the mistresses of the king, the worst of whom was the notorious Madame Du Barry. Upon their accession to the throne, the Dauphin of France, Louis XVI, and particularly his Austrian wife, the archduchess, Marie Antoinette, met with great favor. But the king proved weak and obstinate; while new complications--the trial of Cardinal de Rohan, and the scandalous libels which the adventuress Jeanne de la Motte directed against the queen--turned into hatred the former national popularity of innocent Marie Antoinette. Once the tide had turned, each new mistake of the Court augmented the public exasperation; and, after the fall of the Bastile, the infuriated mob, breaking into the palace of Versailles, attempted the murder of the queen, and drove the royal family to Paris.