The Composite capital, for it can hardly be called an order, as there is nothing in the entablature or the base to distinguish it from the Corinthian, was formed probably under the patronage of the early emperors. The earliest instance we have of it now extant in Rome, is in the Arch of Titus (Fig. 8) and there are only three other ruins where it is found. These are, the Arch of Septimius Severus, the Arch of the Goldsmiths, and the Baths of Diocletian, at Sta. Maria degli Angeli, where it is mixed up with Corinthian capitals. The peculiar combination of which it consists, the superposition of the Ionic volutes upon two rings of Corinthian acanthus leaves, is not generally considered a very happy artistic design. Hope says of it, that “instead of being a new creation of genius, it gave evidence of poverty to invent and ignorance to combine,” and Fergusson is hardly more complimentary to the Roman architects. [Illustration: Fig. 4.] But though we must deny to this Roman adaptation of Greek forms the credit of originality, or even of symmetrical design, yet its rich appearance was peculiarly suited to the lavish ornamentation with which the Roman emperors delighted to trick out their palaces and halls, and it well represents to us the character of the Roman imperial architecture, with its indiscriminate combination of mouldings and profusion of gaudy detail. The three great triumphal arches of Titus, Septimius Severus, and Constantine at Rome, and also the Arch of Drusus, are decorated with an unmeaning and foreign dress. In the Arch of Constantine alone, the columns which stand in front are in some measure justified by the statues they support. Of the minor archways at Rome, that of Gallienus has Corinthian pilasters in the roughest style of art, the Janus Quadrifrons probably had rows of Corinthian columns between its niches, and the small gateway near it has decorative pilasters with Composite capitals. On the other hand, the Arch of Dolabella on the Cælian, which has a single line as cornice, and the Porta S. Lorenzo are examples of the striking effect of a simple arch without Greek ornament. The unmeaning pediments and tasteless columns with which most of these arches are adorned, remind us of Pope’s recipe for the front of a villa, “Clap four slices of pilaster on’t; that, laid with bits of rustic, makes a front.” [Illustration: Fig. 5.] Colossal columns were as genuine a creation of Imperial Rome as triumphal arches. In both the sculpture had become subordinate to the pedestal. The idea of placing a statue upon the top of a column was probably unknown to the Greeks, or at least, never carried out on the immense scale of the two great Roman Columns of Trajan and Marcus Aurelius. It must not, however, be forgotten, that the Column of Trajan, and probably also that of Marcus Aurelius, was enclosed within a narrow court, and that the bas-reliefs were intended to be seen from the roofs and windows of the surrounding buildings.