Entrance to the Cemetery of St. Callixtus—Cemetery above ground—_Graffiti_ at entrance of the Papal Crypt—Original epitaphs of several of the Popes of the third century—Inscription by Pope Damasus explained 125 CHAPTER II. THE CRYPT OF ST. CECILIA. Ancient notices of burial of St. Cecilia near the Popes—Discovery of the crypt—Description of its ornamentation—Refutation of the claim of the Catacomb at St. Sebastian’s to be considered the burial-place of St. Cecilia 139 CHAPTER III. THE CRYPT OF ST. EUSEBIUS. Precautions taken by Pope Damasus and others to guide pilgrims to the particular tomb they wished to visit—Copy of the epitaph in honour of St. Eusebius—Fragments of the original set up by Damasus—Important historical revelation to be gathered from it—Discipline of the Church in regard to the _lapsi_—Title of martyr given to Eusebius—Translation of his body 150 CHAPTER IV. THE TOMB OF ST. CORNELIUS. St. Cornelius buried in another Catacomb—Objects of interest to be seen _en route_—The family vault of the Deacon Severus at end of third century—Paintings of the Good Shepherd, accompanied by two of His Apostles and several sheep—Of Moses taking off his shoe, striking the rock, &c.—Tomb of St. Cornelius, and its epitaph—Inscriptions above and below it of Popes Damasus and Siricius—Figures of SS. Cornelius and Cyprian; of SS. Sixtus II. and Optatus—Very ancient paintings in two adjacent chambers—Conclusion 157 _ROMA SOTTERRANEA._ Part First. CHAPTER I. THE ORIGIN OF THE CATACOMBS.