In dealing with one of the most vivid points in the history of the town--the Rule of the Nobles--we have, with some diffidence, incorporated into our narrative the words of one who had already drawn his description of the subject straight from the original source, treating it with such a powerful sympathy as it would have been impossible for us to rival. For further knowledge of this terrible period we can but refer the student to the chronicle of Matarazzo. (_Archivio Storico_, vol. xvi. part 2.) With the art of Umbria we have dealt only shortly, and from the point of view of sentiment rather than that of criticism. For a severe and thorough knowledge of the technique and use of colours employed by the men who lived through such scenes as we have described in chapters II. and III. we must refer the reader to the works of other authors. For our dates, and facts in reference to art, we have relied on Kugler, Crowe and Cavalcaselle, Rio, Vasari and the local writers, Mariotti, Lupatelli, Mezzanotte, etc. It remains to give a list of the books which we have consulted for the history. Amongst these are the Perugian chronicles contained in the _Archivio Storico d'Italia_; Graziani, Matarazzo, Frolliere, and Bontempi; Fabretti's chronicles of Perugia, and his "_Vita dei Condottieri, etc._"; and the local histories of Ciatti, Pellini, Bartoli, Mariotti, and Bonazzi. Villani and Sismondi have been consulted; Creighton's "_History of the Papacy during the Reformation_," and von Ranke's "_History of the Popes_." Of the purely local histories mentioned above Bonazzi's is the most important. His two bulky volumes are excellent reading in spite of his sarcastic and often unjust bitterness against the clerical party. A number of local pamphlets, the names of whose authors we cannot here enumerate, have been used for various details, together with other books on a variety of subjects, such as Dennis' "_Etruria_," Broussole's "_Pélerinages Ombriens_," Hodgkin's "_Italy and her Invaders_," etc., etc. When all is told, by far the most valuable and trustworthy authority on Perugian matters is Annibale Mariotti. A local gossip who combines with his gossiping qualities an exquisite sense of humour, and a real genius for investigation in matters relating to his native town, is the person of all others from whom to learn its actual life and history. Mariotti is an eminent specimen of this class of writers, and no one who is anxious to understand the spirit of Perugia should omit a careful study of his works on the _Popes_, the _People_, and the _Painters_ of Perugia.