[284] _Les Catacombes de Rome, par Louis Perret._ Six vols., fol. Paris, 1852-57. This book costs in the United States $600. Only three copies are known to be in America. One of these is a gift from the late emperor of the French to the parliamentary library of Canada. [285] Edinburgh Review, January, 1859, p. 48. De Rossi speaks with tenderness of this superb edition--_la grandiza edizione_--which, in spite of its defects--_mal grado i suoi difetti_--is a valuable contribution to the literature of the Catacombs. [286] _Roma Sotterranea Cristiana._ Roma, 1864-67. Four vols. fol., two of text and two of plates, which are of great fidelity. The text is from the Vatican press. The plates bear the imprint _Venezia_. [287] _Inscriptiones Christianæ Urbis Romæ Septimo Sæculo Antiquiores._ Romæ. One vol. fol., 1857-61. It is dedicated to the present pope, “Another Damasus, who has brought to light the monuments of the martyrs ... overwhelmed with ruin.”--“Pio IX., Pont. Max. alteri Damaso, qui monumenta martyrum,... ruinis obstructa in lucem revocat.” Both of these works, which embody the result of the most recent explorations, have been laid under tribute in the preparation of these pages. Several of the illustrations are from the same sources. [288] _Roma Sotterranea._ London, 1869. 8vo., pp. 414. It sells in New York for about $16 00. [289] “Christian Epitaphs of the First Six Centuries,” by the Rev. John McCaul, LL.D., President of University College, Toronto. Toronto and London, 1869. Dr. McCaul was previously well known to the archæological world by his learned volume on Brittanno-Romano Inscriptions, a work which has elicited the commendations of the highest critical authorities in Europe. The writer of these pages has been greatly assisted by his veteran scholarship and critical revision of the text.