[2] See de Rossi: _Bullettino di archeologia cristiana_, 1888-1889, p. 15; 1890, p. 97.--Edmond Le Blant: _Comptes rendus de l'Acad. des Inscript._, 1888, p. 113.--Arthur Frothingham: _American Journal of Archæology_, June, 1888, p. 214.--R. Lanciani: _Gli horti Aciliorum sul Pincio_, in the _Bullettino della commissione archeologica_, 1891, p. 132; _Underground Christian Rome_, in the _Atlantic Monthly_, July, 1891. [3] See Ersilia Lovatelli: _Il Monte Pincio_, in the _Miscellanea archeologica_, p. 211.--Rodolfo Lanciani: _Su gli orti degli Acili sul Pincio_, in the _Bullettino di corrispondenza archeologica_, 1868, p. 132. [4] A description of the beautiful villa of Herodes, adjoining the Catacombs of Prætextatus, will be found in chapter vi. pp. 287 sqq. [5] A _consul suffectus_ was one elected as a substitute in case of the death or retirement of one of the regular consuls. [6] Lampridius, in _Sev. Alex._, c. 43. [7] In chapter v., p. 122, of _Ancient Rome_, I have attributed these _graffiti_ to the second half of the first century; but after a careful examination of the structure of the wall, on the plaster of which they are scratched, I am convinced that they must have been written towards the end of the second century. [8] Orelli, 4024, _Digest L._, iv. 18, 7. [9] See Ulpian: _De officio Procons._, i. 3. [10] Lampridius, _Heliog._, 3. [11] See Greppo: _Mémoire sur les laraires de l'empereur Alexandre Sevère_. [12] The name of the villa was _Cassiacum_; its memory has lasted to the present age. See the memoir of Luigi Biraghi, _S. Agostino a Cassago di Brianza._ Milano, 1854. [13] See _Bullettino di archeologia cristiana_, 1865, p. 50. [14] It contains the words PETRO LILLVTI PAVLO. They are surely genuine and ancient. I examined them in company with Mommsen, Jordan, and de Rossi, and they attributed them to the beginning of the third century of our era. The best suggestion regarding their origin is that they belong to a person, probably Christian, who used the name Petrus as _gentilitium_, and Paulus as _cognomen_, and who was the son of Lillutus, however barbaric this last name may sound. [15] See de Rossi: _Bullettino di archeologia cristiana_, 1863, p. 49.--Rohault de Fleury: _L'arc de triomphe de Constantin_, in the _Révue archéologique_, Sept. 1863, p. 250.--W. Henzen: _Bullettino dell' Instituto_, 1863, p. 183. [16] See Bibliography, p. 1. The title of the book may be translated thus: _On the pagan and profane objects transferred to churches for their use and adornment_. [17] The two busts of S. Peter and S. Paul, described in Cancellieri's book, _Memorie storiche delle sacre teste dei santi apostoli Pietro e Paolo_, Roma, Ferretti, 1852 (second edition), were stolen by the French revolutionists in 1799. [18] See _Corpus Inscriptionum Latinarum_, part VI., No. 351.