the younger, eldest son of Paslus, was an extraordinary infant and a mediocre man. Born at Venice on the 13th of February 1567, he exhibited precocious talents, which his father cultivated with the greatest care. At the age of eleven, he published a collection of Elegancies in the Latin and Italian languages, which had great success; but it is generally believed that in making this collection he had been assisted by his father. Three years after, there appeared his Orthographica Ratio, a work which presents a complete system of Latin orthography, founded on the inscriptions, the medals, and the best manuscripts. In 1562 he went to join his father at Rome, and profited by his residence in that city to augment his collection of ancient inscriptions. He returned to Venice at the latest in 1565, and assumed the direction of the Aldine press, the useful labours of which were not interrupted by the absence of his father. In 1576 he was named professor of belles-lettres in the schools of the chancery; and to this employment he, in 1584, joined that of secretary to the senate. He transferred his printing establishment, which he had much neglected, to Nicolo Manassi, one of his workmen; and, notwithstanding the proofs of esteem which he had received from his fellow-citizens, he quitted Venice in 1585, in order to occupy, at Bologna, the chair of eloquence, vacant by the death of Ligonio. The offer of a more advantageous appointment decided him, in 1587, to settle at Pisa; and, two years after, yielding to the solicitations of his friends, he accepted the chair which Muretus had occupied with so much distinction at Rome, and which had been kept for him since the death of that learned professor. The condition of Mamutius was still further ameliorated under the pontificate of Clement VIII., who, in 1590, confided to him the direction of the Vatican press. But he had the fault of indulging to excess in the pleasures of the table; and he died in consequence of a debauch, on the 28th of October 1597, in the fifty-first year of his age. He had memory and erudition, but much less taste and critical ability than his father; and he was justly accused of plagiarism in publishing, under his own name, notes on Paterculus, which had been communicated to him by the learned Dupuis. His natural inconstancy prevented him from undertaking anything truly great; and he owed his reputation less to his own merit than to the celebrity which his father and grandfather had acquired. His works are, 1. Eleganze insieme con la copia della Lingua Toscana e Latina, Venice, 1558, in 8vo; 3. Orthographiae Ratio, collecta ex libris antiquis grammaticis, &c. ibid. 1561 and 1568, in 8vo; 3. Discorso intorno all'eccellenza delle Repubbliche, 1591, in 8vo; 4. Locuzioni dell'Epistle di Cicerone, 1575, in 8vo; 5. De Quassitis per Epistolam libri iii, 1576, in 8vo; 6. Oratio in funere B. Rottarii, ducis Sabaudiae apud Remp. Venetam legati, 1578, in 4to; 7. Il perfetto Gentiluomo, 1584, in 4to; 8. Locuzioni di Terentio, 1585, in 8vo; 9. La Vita di Cosimo I. de' Medici gran duca di Toscana, Bologna, 1586, in folio; 10. Le Azioni di Castruccio Castracani, Rome, 1590, in 4to; 11. Lettere Volgari, ibid. 1592, in 4to; 12. Viginti cinque Discorsi sopra Livio della seconda Guerra Cartaginese, ibid. 1601, in 8vo. Aldus the younger also wrote some Discourses; an Explication of the ode of Horace, De Landibus Vitae rusticis; Commentaries on the Art of Poetry by Horace, as well as on the Rhetoric and the Philosophical Books of Cicero. After his death, the rich and extensive library collected by his grandfather and his father was divided between his creditors and his nephews. His intention, it is said, was to bequeath it to the city of Venice. (See Renouard, Annales de l'Imprimerie des Alpes, Paris, 1803–1812, in three vols. 8vo.)