THERMÆ: of Agrippa, 27 B.C.; _of Nero_; of Titus, 78 A.D. _Domitian_, 90 A.D.; Caracalla, 211 A.D.; Diocletian, 305 A.D.; _Constantine_, 320 A.D.; “Minerva Medica,” 3d or 4th century A.D. ARCHES: _of Stertinius_, 196 B.C.; _Scipio_, 190 B.C.; _Augustus_, 30 B.C.; Titus, 71-82 A.D.; _Trajan_, 117 A.D.; Severus, 203 A.D.; Constantine, 320 A.D.; of Drusus, Dolabella, Silversmiths, 204 A.D.; Janus Quadrifrons, 320 A.D. (?); all at Rome. Others at Benevento, Ancona, Rimini in Italy; also at Athens, and at Reims and St. Chamas in France. Columns of Trajan, _Antoninus_, Marcus Aurelius at Rome, others at Constantinople, Alexandria, etc. TOMBS: along Via Appia and Via Latina, at Rome; Via Sacra at Pompeii; tower-tombs at St. Rémy in France; rock-cut at Petra; at Rome, of Caius Cestius and Cecilia Metella, 1st century B.C.; of Augustus, 14 A.D.; Hadrian, 138 A.D. PALACES and PRIVATE HOUSES: On Palatine, of Augustus, Tiberius, Nero, Domitian, Septimius Severus, _Elagabalus_; Villa of Hadrian at Tivoli; palaces of Diocletian at Spalato and _of Constantine_ at Constantinople. House of Livia on Palatine (Augustan period); of Vestals, rebuilt by Hadrian, cir. 120 A.D. Houses at Pompeii and Herculanum, cir. 60-79 A.D.; Villas of Gordianus (“Tor’ de’ Schiavi,” 240 A.D.), and _of Sallust_ at Rome and _of Pliny_ at Laurentium. CHAPTER X. EARLY CHRISTIAN ARCHITECTURE. BOOKS RECOMMENDED: Bunsen, _Die Basiliken christlichen Roms_. Butler, _Architecture and other Arts in Northern Central Syria_. Corroyer, _L’architecture romane_. Cummings, _A History of Architecture in Italy_. Essenwein (Handbuch d. Architektur), _Ausgänge der klassischen Baukunst_. Gutensohn u. Knapp, _Denkmäler der christlichen Religion_. Hübsch, _Monuments de l’architecture chrétienne_. Lanciani, _Pagan and Christian Rome_. Mothes, _Die Basilikenform bei den Christen_, etc. Okely, _Development of Christian Architecture in Italy_. Von Quast, _Die altchristlichen Bauwerke zu Ravenna_. De Rossi, _Roma Sotterranea_. De Vogüé, _Syrie Centrale_; _Églises de la Terre Sainte_.