Mai, Angelo, Cardinal (1782-1854), an Italian scholar, was born in Lombardy and educated at' a Jesuit college. Having been appointed to a cnre at Milan, he became librarian there, and made valuable discoveries among the MSS. of the library, among other things, palimpsests of Cicero and Plautus, and publishing in 1822 a valuable edition of the Be Republicd. Invited to the Vatican, he took charge of the library, and in spite of the calls made upon him by his ecclesiastical rank and dignities, he worked hard among the unedited MSS. there, and did much to advance the cause of learning.