IN ITALY, at Turin and Florence, a great number of valuable works have been issued, illustrative of the recent revolutions. They do not claim to be histories, for history is impossible, while events are contemporary and cannot be contemplated from a universal point of principle and analysis. But these volumes are what the French with their happy facility would call studies for history. They are the material from which the great historic artists must compose their pictures--they are the diary of the movement--they follow all the changes of the time, hopeful or despondent, with the fidelity and closeness of an Indian upon the trail. We have seen several of these publications, and hope ere many months to see a treatise upon the republican movement in Europe from a pen well able to sketch it, and which is fed by ink which is never for a moment red. The largest and most important of these works is that of M. Gualterio, just published in Florence, which comprises several letters of the Austrian lackey, Francis IV., Duke of Modenas, and throws light upon many of the darkest passages of the dark Austria-Italico policy. Among other letters, also, one of the most remarkable is that of the Cardinal Gonsalvi, well known as the able and humane Prime Minister of Pius VII., and to whose memory there is now upon the walls of St. Peter's a monument by Thorwaldsen, of which a statue of the Cardinal is part. This letter speaks of the miserable conduct of the political trials, and "justice," he says, "charity, the most ordinary decency demands that all humanity shall not be so trampled under foot. What will the English and French journals say--not the Austrian, when they learn of this massacre of the innocents." This was thirty years ago. But at this moment, were there an able and humane minister at the Vatican, how truly might he repeat Gonsalvi's words! It is in works like these, and in the journals and pamphlets published during the intensity of the struggle, that the still-surviving Italian genius, which it has been so long the northern policy to smother and repress, betrayed itself. Nor among these works, as striking another key, ought we to omit the Souvenirs of the War of Lombardy by M. de Talleyrand-Perigord. Duke of Dino--and the history of the Revolution of Rome by Alphonse Balleydier. The Souvenirs are devoted to the glory of the unhappy King Charles Albert, the dupe of his own vanity and the victim of his own weakness. Upon the pages of M. le Duc de Dino, however, he blazes very brilliantly as a martyr--martyr of a cause hopeless even in the first flush of success--martyr of an army without enthusiasm, of a liberalism without freedom or heroism. The English royalists, the reader will remember, were fond of the same title for the unhappy Charles I.