And of the marbles thus produced, one of the most beautiful is that which is known in Rome by the name of Pavonazzetto, from its peacock-like markings. The ground is a clear white, with numerous veins of a dark red or violet colour, while the grain is fine, with large shining scales. It resembles alabaster in the form and character of its veins, and in its transparent quality. It is a Phrygian marble, and was known to the ancients under the name of Marmor Docimenum. The poet Statius notices the legend that it was stained with the blood of Atys. It was a favourite marble of the emperor Hadrian, who employed it to decorate his tomb. It was brought to Rome when Phrygia became a Roman province, after the establishment of Christianity in Asia Minor. At first the quarry yielded only small pieces of the marble, but when it came into the possession of the Romans they developed its resources to the utmost; numerous large monolithic columns being wrought on the spot, and conveyed at great expense and labour to the coast. Colonel Leake supposes that the extensive quarries on the road from Khoorukun and Bulwudun are those of the ancient Docimenum. Hamilton, in his Researches, says that he saw numerous blocks of marble and columns in a rough state, and others beautifully worked, lying in this locality. In an open space beside a mosque lay neglected a beautifully-finished marble bath, once intended, perhaps, for a Roman villa; and in the wall of the mosque, and of the cemetery beside it, were numerous friezes and cornices, whose elaborately-finished sculptures of the Ionic and Corinthian orders proved that they were never designed for any building on the spot, but were in all probability worked near the quarries for the purpose of easier transportation, as is done in the quarries of Carrara at the present day. Pavonazzetto is thus associated in an interesting manner with the Phrygian cities of Laodicea and Colosse. When St. Paul was preaching the Gospel through this part of Asia Minor, the architects of Rome were conveying this splendid marble from the quarries of the Cadmus, to adorn the palatial buildings of the Imperial City. No marble was so highly esteemed as this, and no other species is so frequently referred to by the Latin poets.
The high altar of the subterranean church, under which the relics of St. Ignatius and St. Clement are supposed to lie, is covered by a canopy supported by elegant columns of pavonazzetto marble; while the high altar of the upper church is similarly surmounted by a double entablature of Hymettian marble, supported by four columns of pavonazzetto. The extra-mural church of St. Paul's had several splendid pillars of Phrygian marble, taken by the emperor Theodosius from the grandest of the law courts of the Republic; but these were unfortunately destroyed during the burning of the old basilica about sixty years ago. We see in the flat pilasters of this purple-veined marble, now erect against the transepts of the restored church, the vestiges of the magnificent Æmilian Basilica in the Forum, of whose celebrated columns Pliny spoke in the highest terms. Specimens of pavonazzetto are to be seen in almost every church in Rome. In the interesting old Church of Sta. Agnese there are two columns of this marble, the flutings of which are remarkable for their cabled divisions. The gallery above is supported on small columns, most of which are of pavonazzetto spirally fluted. In the Church of Santa Maria degli Angeli there is also a remarkably fine specimen; while there is a grand pair of columns in the vestibule of St. Peter's between the transept and the sacristy. Fourteen fluted columns of Phrygian marble have been dug up from the site of the Augustan Palace on the Palatine; while the one hundred and twenty employed by the emperor Hadrian, in the Temple of Juno and Jupiter erected by him, have been distributed among several of the Roman churches. The side walls of the splendid staircase of the Bracchi Palace are sheathed with a very rare and beautiful variety, remarkable for the delicacy of its veins and its brilliant polish. The veneer was produced by slicing down two ancient columns discovered near the Temple of Romulus Maxentius in the Forum, converted into the Church of SS. Cosma e Damiano. But the finest of all the pavonazzetto columns of Rome are the ten large ones in the Church of San Lorenzo outside the walls. In the volute of the capital of one of them a frog has been carved, which identifies it as having formerly belonged to the Temple of Jupiter or Juno, within the area of the Portico of Octavia. Pliny tells us that both temples were built at their own expense by two wealthy Lacedæmonian artists, named Sauros and Batrakos; and, having been refused the only recompense they asked—the right to place an inscription upon the buildings,—they introduced into the capitals of the pillars, surreptitiously, the symbols of their respective names, a lizard and a frog.
The most precious of the old marbles of Rome is the Rosso antico. Its classical name has been lost, unless it be identical, as Corsi conjectures, with the Marmor Alabandicum, described by Pliny as black inclining much to purple. For a long time it was uncertain where it was found, but recently quarries of it have been discovered near the sea at Skantari, a village in the district of Teftion, which show traces of having been worked by the ancients. From these quarries the marble can only be extracted in slabs and in small fragments. This is the case, too, with all the red marbles of Italy, which, in spite of their compact character, scale off very readily, and are friable, vitreous, and full of cleavage planes, in addition to which they are usually only found in thin beds, which prevents their being used for other purposes than table-tops and flooring-slabs. The predominance of magnetic iron ore, to which they owe their vivid colour, has thus seriously affected the molecular arrangement of the rocks. It is probable that rosso antico, like the Italian red marbles, belongs to one or other of the Liassic formations, which, in Italy as well as in Greece and Asia Minor, constitutes a well-marked geological horizon by its regular stratification and its characteristic ammonite fossils. The quantity found among the Roman ruins of this marble is very large; many of the shops in Rome carving their models of classical buildings in this material. But the fragments are comparatively small. When used in architecture they have been employed to ornament subordinate features in some of the grander churches. The largest specimens to be seen in Rome are the double-branched flight of seven very broad steps, leading from the nave to the high altar of Santa Prassede. Napoleon Bonaparte, a few months before his fall, had ordered these slabs of rosso antico to be sent to Paris to ornament his throne; but fortunately the order came too late to be executed. The cornice of the present choir is also formed of this very rare marble; while large fragments of the old cornice of the same material, which ran round the whole church, are preserved in the Belvedere Cortile of the Vatican. Tradition asserts that the pieces which have been converted to these sacred uses in the church once belonged to the house of Pudens, the father of its titular saint, in which St. Peter is supposed to have dwelt when in Rome. The entrance to the chamber of the Rospigliosi Palace, which contains the far-famed "Aurora" of Guido Reni on the ceiling, is flanked by a pair of Roman Ionic columns of rosso antico, fourteen feet high, which are the largest in Rome, although the quality of the marble is much injured by its lighter colour, and by a white streak which runs up each shaft nearly from top to bottom. In the sixth room of the Casino of the Villa Borghese the jambs of the mantelpiece are composed of rosso antico in the form of caryatides supporting a broad frieze of the same material wrought in bas-relief.
This marble seems to have been the favourite material in which to execute statues of the Faun; for every one who has visited the Vatican Sculpture Gallery and the Museum of the Capitol will remember well the beautiful statues of this mythic being in rosso antico, which are among their chief treasures, and once adorned the luxurious Villa of Hadrian at Tivoli. This marble is admirably adapted for such sculpture, for it gives to the ideal of the artist the warm vividness of life. And it seems a fit colour, as Nathaniel Hawthorne has said, in which to express the rich, sensuous, earthy side of nature, the happy characteristics of all wild natural things which meet and mingle in the human form and in the human soul; the Adam, the red man formed out of the red clay, in which the life of the animals and the life of the gods coalesce. In the Gabinetto of the Vatican, along with a large square tazza of rosso antico, is kept a most curious arm-chair of this marble, called sedia forata, found near the Church of St. John Lateran, upon which, in the middle ages, the Popes were obliged to sit at their installation in the presence of the Cardinals. This custom, which was practised as late as the coronation of Julius II. in 1503, arose from a desire to secure the throne of St. Peter from being intruded upon by a second Pope Joan—whether there ever really was such a personage, or whatever gave rise to the curious myth. The chair is like an ordinary library chair, with solid back and sides, sculptured out of a single block, and perforated in the seat with a circular aperture. Rosso antico is not what might strictly be called a beautiful marble. Its colour is dusky and opaque, resembling that of a bullock's liver, marked with numerous black reticulations, so minute and faint as to be hardly visible. But the grain is extremely fine, admitting of the highest polish.
Of black marbles—in the formation of which both the animal and vegetable kingdoms have taken part, their substance being composed of the finely-ground remains of foraminifera, corals, and shells, and their colour produced by the carbonaceous deposits of ancient forests—few kinds seem to have been used by the ancient Romans. The nero antico was the species most esteemed, on account of its compact texture, fine grain, and deep black colour, marked occasionally with minute white short straight lines, always broken and interrupted. It is the Marmor Tænarium of the ancients, quarried in the Tænarian peninsula, which forms the most southerly point in Europe, now called Cape Matapan. The celebrated quarries which Pliny eloquently describes, but for which Colonel Leake inquired in vain, were under the protection of Poseidon, whose temple was at the extremity of the peninsula. They attracted, on account of the sanctuary which the temple afforded, large numbers of criminals who fled from the pursuit of justice, and who readily found work in them. Very fine specimens of this marble may be seen in a pair of columns in the obscure Church of Santa Maria Regini Coeli, near the Convent of St. Onofrio, on the other side of the Tiber; in a pair in the church of Ara Coeli; and also in a pair in the third room of the Villa Pamphili Doria, which are extremely fine, and are probably as large as any to be met with. In consequence of the quantity used in the inscriptional tablets of monuments, for which this seems to be the favourite material, nero antico is extremely scarce in modern Rome. The bigio antico is a grayish marble, composed of white and black, sometimes in distinct stripes or waves, and sometimes mingled confusedly together. It was the Marmor Batthium of the ancients, and two of the large columns in the principal portal of the Church of Santa Croce in Jerusalemme are remarkably fine specimens of it, probably taken from the Villa of Heliogabalus, in whose gardens, called the Horti Variani, the church was built.
Another species is the bianco e nero antico, the Marmor Proconnesium of antiquity, obtained from the celebrated quarries of Proconnesos, an island in the western part of the Propontis. Many of the towns of Greece were decorated with this marble. The internal part of the famous sepulchre erected by Artemisia, the widow of Mausolus, king of Caria, to her husband, and after whom all grand tombs ever since have received the name of mausoleum, was built of this marble. So celebrated were the quarries of Proconnesos that the ancient name of the island was changed to Marmora, and the whole of the Propontis is now called the Sea of Marmora. Although so highly esteemed in Greece, this marble does not seem to have been extensively used in Rome; the finest relics being the four columns supporting the marble canopy, in the form of a Gothic temple, which surmounts the high altar of St. Cæcilia, which is among the most ancient of all the churches of Rome. They were probably derived from some old Roman palace, and are remarkable for the clearness and brilliancy of the white blotches on a black ground. There are different varieties of this marble: one kind in which the blotches or veins are pure black on a pure white ground, and another in which the blotches or veins are pure white on a black ground. In these varieties, however, the black and the white are more confused together, but remain notwithstanding distinct and separate, so that if the veins are white the ground is sure to be black, and vice versâ. The ancient Marmor Rhodium, or the giallo e nero, had golden-coloured veins on a black ground, and, owing to its compact texture, was capable of receiving a high polish. It is very like the celebrated marble of Portovenere, a modern Italian species obtained from the western hills of the Gulf of Spezia, where the formation passes into that of the ammonitiferous limestones of the Lias and of the palæozoic rocks. A beautiful highly-polished specimen of Rhodian marble exists in the mask in front of the tomb of Paul III. in the tribune of St. Peter's, sculptured by Della Porta in 1547, long previous to the discovery of the quarries of Portovenere. It may be remarked that the grain of the latter species is such that it will not keep its polish without extreme care; a circumstance which distinguishes it from the Rhodian marble, whose tenacity in this respect renders it eminently adapted for the more costly class of decorative works.
The marbles we have been hitherto considering belong to the older calcareous formations of Italy, Greece, Asia Minor, and Egypt, and go down to the upper triassic and muschel-kalk limestones, and perhaps even to those of an older period. But there is a class of ancient marbles in Rome of much more recent geological origin—belonging indeed to the Miocene epoch—which are called Lumachella, from the Italian word signifying snail, on account of the presence in all the species of fossil shells. They vary in colour from the palest straw to the deepest purple. Some of them are exceedingly beautiful and valuable, and they are nearly all more or less rare, being found chiefly in small fragments of ancient pavements. Their substance is formed of the shells of the common oyster in bluish gray and black particles on a white ground, as in the Lumachella d' Egitto; of the cardium or cockle, assuming a lighter or deeper shade of yellow, as in the Lumachella d' Astracane; of the ammonite, as in the L. Corno d' Ammone; of the Anomia ampulla in the L. occhio di Pavone, so called from the circular form of the fossils whichever way the section is made; of encrinites, belemnites, and starfish, showing white or red on a violet ground, as in the L. pavonazza; and "of broken shells, hardly discernible, together with very shining and saccharoid particles of carbonate of lime," as in the Marmor Schiston of the ancients—the brocatello antico of the Italians, so named from its various shades of yellow and purple, resembling silk brocade. The most important specimens of Lumachella marbles are the pair of very fine large columns of L. rosea on the ground-floor of the Schiarra Palace, the balustrade of the high altar of St. Andrea della Valle, two columns in the garden of the Corsini Palace of L. d' Astracane, and a pair of large pillars which support one of the arches of the Vatican Library, formed of L. occhio di pavone. Specimens of brocatello may be found in several churches and palaces, forming mouldings, sheathings, and pedestals.
The most interesting of the Lumachella marbles is the bianca antica, the Marmor Megarense of the ancients, composed of shells so small as to be scarcely discernible, and so closely compacted that the substance takes a good polish. The well-known Column of Trajan—the first monument (columna cochlæa) of this description ever raised in Rome, and far superior to the Antonine Column—is composed of Lumachella marble from Megara. It presents, in twenty-three spiral bands of bas-reliefs, winding round thirty-four blocks of stone, the history of the victories of Trajan over the Dacians, and, without reckoning horses, implements of war, and walls of cities, is said to consist of no less than two thousand five hundred figures, each about two feet two inches high. It is a strikingly suggestive thought, that this majestic pillar—which produced so deep an impression upon the minds of posterity that, according to the beautiful legend, Pope Gregory the Great was moved to supplicate, by means of masses in several of the Roman churches, for the liberation of him whom it commemorated from purgatory—should be composed of the relics of sea-shells.
"Memorial pillar! 'mid the wreck of Time,
Preserve thy charge with confidence sublime,"
said Wordsworth; but this sublime charge is committed to frail keeping. It is itself a sepulchre of the dead; and the tragedies of the Dacian war are inscribed upon tragedies that took place long ages before there was any human eye to witness them. The historic sculptures that so deeply move our pity for a conquered people, are based upon the immemorial sculptures of creatures whose sacrifice in whole hecatombs touches us not, because it is part of the order of the world by which life forms the foundation of and minister to life. It is strange how many of the grandest monuments are wrought out of the creations of primeval molluscs. The enduring pyramids themselves are formed of the nummulitic limestone studded with its "Pharaoh's beans," the exuviæ of shell-fish that perished ages before the Nile had created Egypt.