The addition of an independent base made the order much more generally useful, and its adoption brought it much more into harmony with the other two existing orders, which would appear to have been the principal object of its introduction. The keynote of Roman architecture was the Corinthian order; and as, from the necessities of their tall, many-storeyed buildings, the Romans were forced to use the three orders together, often one over the other, it was indispensable that the three should be reduced to something like harmony. This was accordingly done, but at the expense of the Doric order, which, except when thus used in combination, must be confessed to have very little claim to our admiration. IONIC. The Romans were much more unfortunate in their modifications of the Ionic order than in those which they introduced into the Doric. They never seem to have either liked or understood it, nor to have employed it except as a _mezzo termine_ between the other two. In its own native East this order had originally only been used in porticoes between piers or _antæ_, where of course only one face was shown, and there were no angles to be turned. When the Greeks adopted it they used it in temples of Doric form, and in consequence were obliged to introduce a capital at each angle, with two voluted faces in juxtaposition at right angles to one another. In some instances—internally at least—as at Bassæ (Woodcut No. 142) they used a capital with four faces. The Romans, impatient of control, eagerly seized on this modification, but never quite got over the extreme difficulty of its employment. With them the angular volutes became mere horns, and even in the best examples the capital wants harmony and meaning. [Illustration: 180. Ionic Order.] When used as a three-quarter column these alterations were not required, and then the order resembled more its original form; but even in this state it was never equal to the Greek examples, and gradually deteriorated to the corrupt application of it in the Temple of Concord in the Forum, which is the most degenerate example of the order now to be found in Roman remains. CORINTHIAN.