_3._ _Supplements to the Clementine Index, 1597–1609._ In the decrees of the half-century following the date of the publication of the Index of 1596, a number of books are separately prohibited the authors of which had already been placed in Class I. In a papal decree of 1623, it is declared that all works published, after 1596, by writers who had already been condemned under Class I were prohibited. A number of books which had not been transferred by the editors of Clement from the lists of Sixtus V were prohibited later, in part during Clement’s life and in part by his successors. In the first decade of the 17th century, a number of individual prohibitions were made of books belonging to the 16th century, and some of which had been in print for a quarter of a century, or more. An example of such a belated prohibition is presented by the case of Bruno. Bruno’s earlier writings were published in 1582, but his name does not occur in the Index of Clement VIII. Bruno’s trial and condemnation took place in Rome, in 1600, and first in 1603 does the list of works prohibited include the books and writings, of every class, of Giordani Bruno Nolani. Bruno was born in 1548 at Nola and associated himself with the Dominicans. Proceedings were taken against him as early as 1577 by the Inquisition both at Naples and at Rome. He succeeded, however, in getting out of Italy and remained absent until 1592. In this year he came under trial with the Inquisition in Venice and, in 1593, was delivered by the Venetian authorities to the Inquisition of Rome. He was in prison in Rome until 1599, and in 1600 was condemned and burned as an apostate and an unrepentant and stubborn heretic. During the trial, Bellarmin served as counsel for the Inquisition.