The Roman Corinthian, like the Greek orders, consisted of three parts, stylobate, column, and entablature, but the stylobate was much loftier, and was not graduated, except in the access before a portico. The column varied from nine and a half to ten diameters, and was always fluted with twenty-four flutes and fillets. The height of the capital is a diameter and one eighth; the entablature varies from one diameter and seven eighths to two diameters and a half. The portico of the Pantheon is one of the best specimens of the Corinthian order. The entablature of the temple of Jupiter Stator, like that of the Pantheon, is two diameters and one half. The pediments are steeper than those made by the Greeks, varying in inclination from eighteen to twenty-five degrees. The mouldings used in Roman architectural works are the same as the Grecian in general form, although they differ from them in contour. They are less delicate and graceful, but were used in great profusion. Roman architecture is overdone with ornament, every moulding carved, and every straight surface sculptured with foliage or historical subjects in relief. The ornaments of the frieze consist of foliage and animals, with a variety of other things. The great exuberance of ornament is considered a defect, although when applied to some structures it is exceedingly beautiful. In the time of the first Caesars architecture had a character of grandeur and magnificence. Columns and arches appeared in all the leading public buildings, columns generally forming the external, and arches the internal construction. Fabric after fabric arose on the ruins of others. The Flavii supplanted the edifices of Nero, which ministered to debauchery, by structures of public utility. [Sidenote: Changes made by the Romans.] [Sidenote: Invention of the arch.] [Sidenote: Uses of the arch.]