Even the 1730 edition was increased by the author from 1731 to about 1740 by many variations and additions, though without changing the arrangement or the substance of the work. These additions were taken for the most part incorporated in a final MS. on which was based the edition of the _Principi di una Scienza Nuova intorno alla comune natura delle nazioni,_ published the very year of Vico's death (Naples, Stamperia Muziana, 1744). In the National Library at Naples are preserved the autographs both of this MS. and of two earlier MSS. of additions and corrections, unpublished fragments of which have been published by Giordano (Naples, 1818) and Del Giudice (Naples, 1862). All the unpublished fragments and variants have been now collected by Nicolini in the edition hereafter mentioned (p. 307). After the second _Scienza Nuova_ Vico wrote hardly anything. We may note among these few productions the speech _De mente heroica_ (Naples, 1732), the addition to the autobiography (1731), and a few sonnets in which, composed though they were, like almost all his verses, by request and as occasional pieces, a personal note may at times be felt. II. REPRINTS, COLLECTIONS, AND TRANSLATIONS Two collections of Vico's minor works have been made, one of the _Latinae orationes_ alone by F. Daniele (Naples, 1766), and the other, rich in unpublished matter, of the Italian and Latin _Opuscoli,_ in four volumes, by C. A. de Rosa, Marchese di Villarosa (Naples, 1818-23). Vico's son Gennaro furnished Villarosa with all his father's extant papers; and these priceless autographs are still preserved at Naples in the house of my intimate friends the engineers Tommaso and Vincenzo de Rosa di Villarosa. The first and only edition as it may be called, since all others are merely reproductions of it, of Vico's complete works is that of Giuseppe Ferrari, in six volumes (Milan, _Classici italiani,_ 1835-37) reprinted with improvements in 1852-54. The _Opere_ edited by N. M. Corcia (Naples, Tipografia della Sibilla, 1834, 2 vols.) are only a selection; and the _Opere_ edited by F. Predari (Milan, Bravetta, 1835) never went beyond one ill-arranged volume. The edition which followed that of Ferrari (Naples, Iovane, 1840-41) is also incomplete and ill-arranged, but contains some small unpublished works. The Neapolitan edition of the _Opere_ in eight volumes (i.-ii. 1858, iii. 1861, iv. 1859, v.-vi. 1860, vii. 1865, viii. 1869, the earlier volumes at the Tipografia dei Classici Italiani, the others by the publisher Morano) is based mainly upon Ferrari, but somewhat incorrect; it is however the most complete of all, as containing the _Sinopsi,_ the _Istituzioni oratorie,_ and the _Orazioni latine_ published by Galasso subsequently to Ferrari's edition, as well as the Italian translations by the advocate F. S. Pomodoro of the _De ratione, De antiquissima,_ and _Diritto universale._