spirits, and so forth, are to be proscribed; due reservation being made in favor of scientific observations touching navigation, agriculture, and the healing art, in which prognostics may be useful to mankind. Having thus broadly defined the literature which has to be suppressed or subjected to supervision, rules are laid down for the exercise of censure. Books, whereof the general tendency is good, but which contain passages savoring of heresy, superstition or divination, shall be reserved for the consideration of Catholic theologians appointed by the Inquisition; and this shall hold good also of prefaces, summaries, or annotations. All writings printed in Rome must be submitted to the judgment of the Vicar of the Pope, the Master of the Sacred Palace, or a person nominated by the Pontiff. In other cities the bishop, or his delegate, and the Inquisitor of the district, shall be responsible for examining printed or manuscript works previous to publication; and without their license it shall be illegal to circulate them. Inquisitorial visits shall from time to time be made, under the authority of the bishop and the Holy Office, in bookshops or printing houses, for the removal and destruction of prohibited works. Colporteurs of books across the frontiers, heirs and executors who have become depositaries of books, collectors of private libraries, as well as editors and booksellers, shall be liable to the same jurisdiction, bound to declare their property by catalogue, and to show license for the use, transmission, sale, or possession of the same.