A year later, another archbishop advises Sirleto that he has been waiting for a year or more for the permission which had been promised by the Pope for the publication of a work that had already been examined three times, the last time by Sirleto himself, and passed upon with approval. He had contracts in train for the publication of the book in Venice as well as in Rome.[144] The authors found it necessary to guard themselves not only against the elimination from their text of sentences, paragraphs, or chapters which were required for a complete and consistent narrative, but against the risk of the interpolation of text of which they had themselves no knowledge and which might, in its purport, be entirely contrary to the purpose and spirit of the work. In May, 1575, Thomasso Thomai, writing from Ravenna, complains that his history of Ravenna, which had secured the approval of the bishop and of the local inquisitor, had, before being brought into print, been marred by the interpolation of certain paragraphs which were entirely contrary to the spirit and to the character of the book. Fra Marco, Inquisitor of Venice, reported, in response to an inquiry made by Sirleto, that the Roman inquisitor, a person both learned and zealous, had found certain passages in the book which appeared to him to be undesirable and had undertaken, in place of eliminating these, to write further paragraphs correcting and explaining them. CHAPTER IX CENSORSHIP REGULATIONS, 1550–1591[145] 1. Papal regulations concerning books, 1550–1591. 2. Censorship regulations in Bavaria, 1561–1582. 3. Censorship under Pius V and Gregory XIII, 1570–1585. =1. Papal Regulations Concerning Books, 1550–1587.=--According to the _Bulla Coenae_, all persons who, without permission of the pope, read or possess copies of condemned books come under the penalty of excommunication, without the requirement of any specific action of the authorities. On this ground, the popes reserved to themselves the exclusive right to grant dispensation for the reading of such books, but this claim of the Curia was not always respected. Permits for the examination of books classed as heretical were given at different times by Charles V, Francis I, the Bishop of London, and others. Leo X himself empowered Cardinal Wolsey to grant such permits, according to his own judgment, to scholars engaged in preparing refutations of the Lutheran heresies. Caraffa complained that, in Venice, copies of certain condemned books were freely circulated and widely read.[146] The Dominican Carranza, later Archbishop of Toledo, secured in 1539 from Paul III, as a result of some clever disputations held in Rome, a dispensation for the reading of heretical books.