4. Special care must be taken to warn bishops, vicars-general [_provisores_], visitors, and vicars, that they are not allowed to mention crimes of heresy or the like in their public letters and proclamations during visit; for his Holiness has referred and submitted such cases to the most illustrious inquisitor-general and the inquisitors appointed by him in all the kingdoms and seigniories of his Majesty. Therefore they shall try these cases _privatim_, which other judges can neither try, nor undertake to investigate, nor otherwise handle. Since in visitations crimes often come to light which must be tried by the Holy Office, warning must be given that these should be submitted to the Inquisition, with all secrecy and without the knowledge of the guilty party. The same must be done in suppressing the titles of vicars, in annulling the head of processes and charges made by the bishops, and in suppressing the title of inquisitor-inordinary; for in these regions the jurisdiction over the crime of heresy is wholly apostolic, except in case of the Indians. If any doubt, contention, or difficulty regarding the execution of this clause should arise, the commissary, without further inquiry, shall promptly notify us that he has warned, in especially polite and respectful language, the prelate concerned, to whom he must show much reverence--for the reverential respect which is due him should not be in the least abated by the privilege of the commissary's office. 5. It sometimes happens that certain ecclesiastical or lay judges take up matters belonging to the Holy Office, and make judicial inquiries therein. The question whether they should forbear from investigation of such cases, and submit them to others, has caused differences to arise between them and the commissaries, and has made them set forth most weighty arguments. Since the main care shall be to prevent such clash of authorities, in order to avoid this it is enough to bid them not to meddle in such matters. But if they persist in doing so it will be necessary to send them an injunction, couched in very respectful terms, drawn up in writing before a notary; to note their answers; and then to report everything to the Holy Office.