Dajydolo. I. Vlneenzo, count, an Italian chemist, of a different family from the preceding, born in Venice about 1758, died there, Dec. 13, 1819. After completing his studies at the university of Padua, he established himself as a chemist in his native city. His principal work, Fondamenti delta jisico-chimica, appli-cati alia formazione de' corpi e de' fenomeni delta natura, appeared in 1796, and passed through six editions. When Venice was annexed to Austria in 1797, Dandolo established himself at Milan, which at that time became the capital of the Cisalpine republic. In 1799, when the Russians invaded the town, he went to Paris, where he published a work on the regeneration of mankind. Afterward he devoted himself to agricultural and industrial pursuits near Milan. When Napoleon annexed Dalmatia to his kingdom of Italy, he appointed Dandolo governor of that province, over which he presided till 1809, when it was allotted to Illyria. He then returned to Venice, with the title of count conferred upon him by the French emperor, and took no further part in public affairs except in 1813, when he cooperated in quelling an insurrection in a neighboring district.

Dandolo translated many of the leading French chemical works into Italian, and, apart from his original productions on the same science, conferred a great service upon Italian industry by his works on the silkworm and Italian wines. II. Tulllo, count, an Italian author, son of the preceding, born at Varese in September, 1801, died in Urbino, April 6, 1870. He wrote books of travels, chiefly relating to Switzerland, and historical treatises on the times of Pericles, Augustus, Marcus Aurelius, Dante, Columbus, and Leo X. Among his later works were Storia del pensiero at medio evo (1857), and Storia del pensiero nei tempi moderni (1864).