Tuesday, May 27, 2014

The Roman Empire, from the Antonines to Constantine

THE ROMAN EMPIRE

B. from the Antonines to Constantine
Silver repoussé, with gilding: The Parabigio Plate.  Dated variously from the 2nd to the 4th century, the earlier (Antonine) date seems perfectly plausible to me.  Found in northern Italy.  D. 0.31m (over a foot).  Cybele, the Great Mother, with her lover Attis (who castrated himself) in Phrygian cap.  Lions draw the chariot.  At the top, sun and moon.  Below, earth, ocean, and the seasons.  At right, an Atlas holds a zodiacal belt with a nude youth in it (Aeon?) and a snake winding up an obelisk on a three-step base (Agathos Daimon?).  Of it Jas Elsner says, "this scene seems overdetermined with symbolic imagery professing grand cosmic claims and hidden meanings."  Like the Munich mosaic (behind the Munich Antinoos head), the coins with baby seasons and the Mother of the Gods, and the Aeon in the Apotheosis of Antoninus and Faustina, and even the style of the decursio on the other two sides of that column base, the style and atmosphere of this may be perfectly Antonine.
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The epoch-making 200 years of Roman Peace, two centuries of civilian prosperity and imperial stability under Roman law of unprecedented justness, came to an end with Commodus, the last (and worst) of the Antonine dynasty; the rest were good, Antoninus Pius and Marcus Aurelius counting as excellent emperors.  Although only Marcus Aurelius was a philosopher (Stoic) in his own right, all the Antonines followed Hadrian in wearing a beard, like a Greek, like a philosopher.  The Greek-speaking eastern half of the Empire continued to prosper, as it had under Hadrian, to which buildings at Ephesus and Miletus bear witness.  This Imperial Greek architecture is basic to the Byzantine vocabulary of form in the future.  The prosperity of Roman trade is attested to by the amount of fine building in Rome's port city, Ostia.  Marcus Aurelius's historiated column, illustrating his campaigns in Germany, is carved in a much more richly illusionistic style than Trajan's some 60 years earlier.  In his famous equestrian portrait, which survived only because the Middle Ages fancied that it was Constantine rather than a pagan emperor, Marcus Aurelius is shown as a commander-in-chief at peace.  The influence of this great statue on later art was very great; it always stood on view in Rome, and even in the hardest times, once the papacy was established there, men always visited Rome.
The founder of the Severan dynasty which took over after the death of Commodus was a north African Roman soldier named Septimius Severus; his wife, Julia Domna, was Syrian.  From this time onward, however good individual rulers might be, there remained very little of ancient Latin traditions and Italic religious customs around the seat of power.  During the third century emperors came from anywhere, from England to the Middle East; since most were elevated to the purple through military coups, few lasted very long, some not even long enough for official portrait types to be made, except on their coins.  It was not a great age for architecture or even, one imagines, for the proper maintenance of Roman roads and aqueducts.
The last great builder (until Diocletian and Constantine) was Septimius Severus's dreadful son, Caracalla, whose great Baths are still partly preserved.  However bad life became in the "Barracks" period, portraiture, in the absence of larger imperial sculptural works, was excellent.  Not surprisingly, universal religions offering salvation in a better life flourished; Mithraism and Christianity were only two of them.  And the last great pagan philosopher, the neo-Platonic poet Plotinus, lived and taught in this century.  Among the most interesting works of the late Roman empire are the sculptures and paintings of half Romanized Syrian cities like Palmyra and Dura Europus, the latter producing religious art of half a dozen different faiths, all represented in her polyglot traders population.  This period saw the building of a temple to Mithras in London, England, and the introduction in northern India of representations of the Buddha in human form, wearing something like Roman drapery.
By the end of this chaotic century, however, the reforms of Diocletian were sorely needed.  Perhaps it was too late; they did not work.  Diocletian retired to his native Dalmatia (part of the west coast of Croatia) at the end of his twenty-year reign, building there a palace with a mausoleum for himself.  Into the remains of that palace the town of Split (Italian Spalato) is built; the mausoleum is its cathedral; Split/Spalato takes its name from eis palation, late Greek for "at the palace", i.e., Diocletian's palace.

The reign of Constantine is not the end of the western Roman empire, but it is the last reign of the whole empire and the last western reign not wholly Christian.  Constantine's is the last imperial reign to adorn Rome (as well as Constantinople, where little of his building remains) with important new civic buildings.  Among Constantine's works were three great Christian churches: the Basilica of St. Peter in Rome, the Church of the Holy Sepulcher in Jerusalem, and the Church of the Nativity in Bethlehem.  But the greatest was the secular basilica, begun by Maxentius and completed by Constantine, called the Basilica Nova.  This influential building functioned as a basilica but was designed in the same form as the great halls of the Roman baths, like the Baths of Caracalla and the Baths of Diocletian (now Sta. Maria degli Angeli, remodeled by Michelangelo, and the Terme Museums) in Rome.

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[MG 229] [MB 71]  Ostia, like Pompeii, has buildings and other finds over a long period of time and could be considered in this course at any point after ca. 100.  Little of what we see today is earlier than Trajan, but most of it is later.  Ostia was covered by river silt, not volcanic ash; ostia means "mouths", and the site is at the mouth of the Tiber; it is the port city of Rome, as Piraeus of Athens, as (later) Classe of Ravenna.  Except that water damage precluded the preservation of many wall paintings, it is as well preserved as Pompeii and gives us a vivid idea of a Roman imperial town in Italy.  As usual, the quality of public works (pavements, drains, storage facilities, state control of building standards in apartment blocks, warehouses, baths, etc.) is impressive.  Ostia shows us how most Romans lived; the comparable buildings in Rome itself do not survive, because they were not covered over, but we know of them from Roman authors.  The bricks and mortar and concrete used for apartment blocks (insulae: they called their blocks "islands") are the very same, and just as well constructed, as for Trajan's market, the Pantheon, or Domitian's palace; the public housing did not, of course, have the rare marble veneers or gilding.  The insulae were built around courtyards, so that every room had light and fresh air; towards the street, the apartments opened onto balconies; staircases were solid, sufficient, and well placed.  Using the ground floor facing the street for shops meant (a) that one could get what was needed near home, and (b) that no one's apartment opened directly onto the street, which was noisy and could be dirty (horses and donkeys don't cause ozone depletion, but they excrete, and metal-shod hooves and wheels on stone pavement are noisy).  The Roman Empire middle classes lived in insulae, the wealthy in large townhouses and suburban and/or country villas, the underclass wherever they could--yet Rome and Ostia did not have vast barrios.  The Baths of Neptune (one of several public baths in Ostia) preserves two rooms of floor mosaics completed just after the death of Hadrian.  Like floor mosaics generally, these are of stone tesserae, black and white marble.  By this time, the ancient stories of Neptune's realm have provided a repertory of decorative motifs: Neptune's chariot, Tritons, dolphins, hippocamps, sea nymphs; this repertory is called the marine thiasos, by analogy to the repertory of Dionysos, the original thiasos of his satyrs, silens and maenads.  The marine thiasos is obviously appropriate for the floor of a bath.
[A 428]  Of the Antonine emperors (the first of them was named Antoninus), Marcus Aurelius is the most famous, because his "Meditations", his book of Stoic philosophy, is one of the influential classics of western literature.  Also, he was the last of the "Good Emperors".  This is the lovely Indian Summer of the Pax Romana, and it might have lasted longer if one of his older children had lived to be heir instead of Commodus.  Art-historically, the Equestrian Statue of Marcus Aurelius is one of the most influential sculptures in all of western art.  Like the She-Wolf and the Spinario, it has always been visible in Rome.  Even in the Middle Ages, it inspired several equestrian portraits of rulers, but the Renaissance genuinely appreciated it as a work of art and made it the ancestor of all the bronze equestrian portraits on view in western (and in a few Asian) cities.  When it was made it was one of many equestrian statues, neither the first nor the last.  Most of the others are wholly lost, having been melted down (being pagan) for their bronze; a few are preserved in fragments.  It was not for his high Stoic ethics that Marcus Aurelius's survived; the story grew up in Christian Rome that the gilded bronze gentle-looking rider was Constantine, who was a canonized saint in the Church.  They were not very inquisitive; none of Constantine's portraits is bearded, but Marcus Aurelius (and the other Antonines) followed Hadrian's ideal of the emperor as philosopher-king and wear even fully beards than Hadrian.  Marcus Aurelius is shown addressing the army from horseback, but unarmed and without weapons.  The horse is (as Renaissance masters realized) a masterpiece, but we have no idea who the sculptor was, though his statue is as great as the equestrian Gattamelata by Donatello or the equestrian Colleoni by Verrocchio in the 15th century.  Sometimes we wish that the Romans had valued artists as the Greeks did, or, later, the Romans of the Renaissance.  Perhaps one reason is that they usually hired ethnic foreigners (viz, artists in the Greek-speaking lands of the Empire) and thus were disinclined to make them culture heroes.  Another, surely, is that they valued art for many extraneous reasons, above all as expressing power and glory and Roman ideals (which did not include aesthetics as such).  The Equestrian Marcus Aurelius has recently been cleaned and the corrosion arrested that had resulted from post-World War II auto exhaust, which had gone so far that there were actually holes in the bronze; he has to remain inside, climate controlled.  Since such statues were designed to be seen in space and sunlight, it is much to be hoped that Rome will do what Venice and Paris have done for public statues that have had to be brought indoors, make a new cast of the statue and set it up on the base in the middle of the Campidoglio (Italian for "Capitolium"), since the base was made for it by Michelangelo and the statue is the centerpiece of his great design for the Campidoglio.
[A 336, right, with Trajan's in preceding Post,] [A 343]  The Column of Marcus Aurelius in Piazza Colonna (named for it) on the Corso in Rome was erected at the time of his father's death by Commodus, ca. 180.  Everything about it is directly inspired by the Column of Trajan: it commemorates military campaigns north of the Alps (in this case, against some Germanic tribes), it has a reclining river god in the first winding at the bottom, and so forth.  Therefore, the differences are especially significant for changes of taste and style in the intervening sixty-five years.  The relief is higher (that is, the carving is deeper, with more use of the running drill), the contrast between light and shade more emphatic; there is more physical activity represented, with less indication of specific site (it is less interesting to ethnographers and military historians, having less specific visual information) or horizons or ground lines; overall, there is more gesture and feeling and less detail.  In these respects, it resembles some of the best Battle Sarcophagi ([B 370] is a later one), which use all-over activity, with no horizon or ground line, to convey the feeling of a melée.  There is one unique image, in the fifth winding from the bottom, on the Column of Marcus Aurelius: a scene showing the Roman army saved by a miraculous downpour, and the rain (or Jupiter Pluvius personifying it) is shown as water embodied (given arms and a face) and also winged, to show that the storm is airborne.  The German tribesmen and their horses are swept away in the ensuing flash flood.  Whether there is anything in the later story, that it was the prayer of a Christian in the Roman army that was efficacious, is hard to say.


[MG 41] [K 196]  Much of the finest Antonine art is not from Italy.  We already alluded to the economic shift to greater wealth in the eastern provinces, such as Asia Minor (where, in the ancient cities like Miletus and Ephesus, this is a great period) and Syria and Egypt.  The Market Gate at Miletus (now set up in the Pergamum Museum, like the Ishtar Gate and the Zeus Altar and much else besides) probably dates from the reign of Marcus Aurelius.  Now you see Roman Imperial architecture with deep roots in Greek Hellenistic design and stone construction (there is no source of hydraulic cement for concrete here, anyhow), yet new and exciting, quite unlike anything built by the kings of Pergamon or by Antiochos Epiphanes in the 2nd century B.C.  This is also the Roman Imperial architecture that Byzantine Empire architecture will spring from.  It drives home the point: the Roman Empire was not culturally uniform.  We Americans can understand that: New York and Chicago have each a distinct ethos and so have Boston and San Francisco (much as they admire each other); Miami is as Hispanic as Minneapolis is Scandinavian; the University of Hawaii teaches more Asian than European art history.  It is not that everything outside Rome was "provincial", either; far from it.  They simply had their own traditions.  So the Market Gate at Miletus is built entirely of fitted ashlar stone, marble, and its columns deviate less from Hellenistic Greek columns.  But as a gate?  This resembles no ancient propylon.  It looks more like the skénê of a theater; shoving back the center of a pediment and pulling forward the wings at left and right come from theater design; in fact, you can find them much earlier in some 4th Style wall paintings from the last days of Pompeii and Herculaneum, and theater architecture is doubtless the inspiration here.  But there are no urban gateways like this in the West, except in North Africa (west of Egypt), where there were close links, architecturally, with Asia Minor.  As for the Fayum Mummy Portraits (the earliest of which go back to the time of Christ, the latest down to Late Antiquity), Egypt wasn't provincial, but these are funerary art, serving the same purpose as Tutankhamen's gold mask 15 centuries earlier but for ordinary middle-class people.  Therefore, their average high quality both as portraits of real people and as examples of virtuosity in the encaustic medium (here used quite differently from what was done in the Knucklebone Players from Herculaneum, drawn in encaustic on marble) is remarkable, for these are work-a-day, unassuming painters.  Here the pigment suspended in wax and glue is thicker but kept liquid enough to apply and mix a little by the use of heated spatulas (small spatulas, like small palette knives); when it cools and sets, it is waterproof and cannot be reworked.  The finished product looks somewhat similar to oil paints applied with a palette knife, but oils dry very slowly and thus can be worked into and blended a lot; encaustic cannot, and it requires great deftness.  Some modern painters use encaustic, but they leave out the glue, which makes a big difference in working it.  Since these are, literally, facial masks it is remarkable that almost all the faces are in three-quarter view; that they are implies that the whole culture took for granted the three-quarter view for portraits, almost always turned to proper right (which is more natural for a right-handed artist), with modelling of the face--took it for granted so strongly that it prevailed even in a mummy mask.  The large, staring eyes, on the other hand, are probably related to their being masks of the dead, looking the living straight in the eye, as if to insist on the persistence of personality.

[G 92] [MG 9]  After Commodus, an army general from Leptis Magna (near Homs in modern Libya) named Septimius Severus became the only African-born emperor.  His empress, Julia Domna, was Syrian.  The dynasty he founded lasted from 193 to 235.  They had two sons, Caracalla and Geta, and Septimius arranged for them to rule jointly on succeeding him.  Caracalla, however, had Geta murdered; then he had all Geta's portraits erased from Septimius's monuments.  Caracalla, understandably, gets bad press notices in Roman history, and his portraits suggest no better.  He left, however, one fine and influential monument in Rome, the public baths (thermae, Ital. terme) that bear his name.  The Baths of Caracalla, even roofless, have inspired later architects.  As soon as they were surveyed and measured and drawn up (in restored form) and published, they became known to architects world wide.  The main hall of New York's Pennsylvania Station (torn down), for example, was based on the Great Hall of the Baths of Caracalla [MG 9].  Today, operas and symphonic concerts and pop concerts (and after the World Cup of 1990 the Three Tenors concert) are staged in the summer with the ruins of the great baths as their background.  For these Baths, though laid out in the same way as Trajan's, were far larger.  They also were farther from the center of Rome, providing thermae in a neighborhood that had not had them before.  For pennies, any Roman could spend all day in the baths.  The warm baths were for basic bathing, the hot baths like a sauna, the cold bath was a swimming pool, but there were exercise rooms, meeting rooms, lecture rooms, reading rooms, as well; one met people there.  Then as now the baths were surrounded by gardens.  One of the aqueducts brought water.  Furnace rooms on the perimeter heated the water, vents (hypocausts) from the furnace rooms under the floors provided central heating.  The baths employed workers in numbers like MacDonald's (from furnace stokers to bath attendants to purveyors of refreshments to cleaner-uppers to errand runners on up to the politest sort of personnel who arranged and managed things--and don't forget the gardeners).  The baths were luxury for everyman, adorned like a palace, with marble veneers and painted stucco vaults and mosaic floors (in black and white; some are still there), with columns of colored marble and statuary in all the niches.  The Naples Museum has some of Caracalla's statuary; it is large and unsubtle but must have looked splendid in the great baths.  As you should have guessed, the Baths, all of them, are built of brick-faced concrete and vaulted with concrete; on the outside, the brick was visible but inside was a feast of colored marbles, the  setting for white and colored marble statuary.  In the Baths of Caracalla, built 211-217, the brick work is still good, but there is beginning to be thicker mortar between the bricks; it is not so good as 2nd-century brickwork (not quite so strong and solid).  We have already seen groin vaults in the aula of Trajan's markets, and there was a groin vaulted hall already in Trajan's baths, too, and lots of others, but the Great Hall of the Baths of Caracalla [MG 9] was vaster and more imposing.  Notice the arched windows at the sides of the groin vaults which do the same job as a clerestory in lighting the tall central space.
[A 427, right] [MA 72]  The greater part of the 3rd century (A.D. 235-284) is called the age of the "Barracks Emperors" because, generally speaking, there was one military coup after another.  For this reason, after the Severans and before Diocletian, we have very few great public buildings and monuments; few reigns lasted long enough or could command the necessary resources; a few of these emperors never even got to Rome.  Luckily Rome's infrastructure and Roman law were so well founded that they kept working for quite a while.  Philip the Arabian [A 427, compared with Trajan] in whose reign Rome celebrated, in A.D. 248, the millennium of her foundation (752 B.C.) was one of them.  It is instructive having his portrait beside Trajan's, because you can use similar language about both (sober, realistic, powerfully carved) but they are not alike.  This is not because Philip was a bad man; history doesn't say that he was.  It is because the style of Imperial portraiture has changed.  All portraits by this date have eyes carved rather than simply painted, increasingly with the pupil given the illusion of a glint by drilling, often with a deep heart-shaped drilling, and the eyes tend to roll upwards a bit (evidently what they felt was impressive or expressive).  Also, they tend to stare, almost as much as the Fayum masks.  Then, the emperors whose background was military are shown with crew cuts and a day or two's growth of beard, evidently to express something like true grit.  Not that they were better commanders than Marcus Aurelius; they just had to look that way.  Of course, in the case of Philip the Arabian, the man just has very rugged features, besides.  Gallienus [MA 72, left], son of Valerian (see O 418 in the next section), who ruled alone from 260 to 268, had small features and wore a beard and longer hair to express affinity to Hadrian and the Antonines (he was interested in philosophy), but the frowning brows and the carved eyes, rolled upward, and a mouth so set that he looks desperate (in the event, his soldiers murdered him at Milan) reveal this as another of the wonderful 3rd-century portraits: Renaissance sculptors particularly admired Roman portraits of this period, in which the ghost of Alexander the Great is no longer discernible.  One of the most unforgettable faces of the 3rd century, found at Ostia, is probably a portrait of the Greek Neo-Platonic philosopher-poet Plotinus (he presented his ideas in a long poem called the Enneads).  Here the carving has the kind of expressive plasticity that we noticed first in the reliefs on the Column of Marcus Aurelius; the lines and hollows are exaggerated to suggest great spirituality.  Plotinus's philosophy is radically idealistic and dualistic, also influenced by Iranian theology; it appealed to minds that might also be attracted to Christianity (later, St. Augustine is a good example); his philosophy and that of his disciple Porphyry were very popular among Roman intellectuals, so it is not too surprising to find at Ostia a portrait dating not long after his death (A.D. 270) or even in his lifetime.
[B 370]  The Ludovisi Sarcophagus was already compared with the Column of Marcus Aurelius; it is the finest of the 3rd-century Battle Sarcophagi.  These sarcophagi may look jumbled and confused to us, but perhaps we need to look at them with the eyes of genius: there is a relief with a "Battle of Lapiths and Centaurs" that Michelangelo carved as a boy (before he was 18); it pretty obviously was inspired by a sarcophagus relief such as this one.  Michelangelo's boyhood work, however, is clearer and finer and has more real feeling.  His is carved; here most of stone-removal was effected with the running drill.  If you look closely, hair looks like a sponge, and some of the drapery looks like wormwood, with deep tubular channels.  It looks great from a distance, not so hot close up, and the principal horseman looks like a doll on a toy horse; his legs don't connect to a body, and his arm just flaps out.  Using the running drill is nothing new, but being content to let its grooves, unretouched, suffice for drapery is new.  There's a "that'll have to do it" attitude evident here, and not only on sarcophagi.


[MG 15] [MG 225]  It was in the 3rd century that the sanctuary buildings at Baalbek in the Bekaa Valley of Lebanon were completed, though most of the main temples is a century older.  The octagonal gatehouse is extremely interesting.  This, too, is solid stone construction, with extremely rich carving on the interior and in the ceiling coffers of the Bacchus temple (the one at left); that rich carving is executed with very deep drill work, producing strong contrasts and even a lacy effect where the drill work is densest.  The smaller round temple (called "Temple of Venus" only because of the curvaceous character of its style) is of the 3rd century and makes a good example contrasting to the round colonnaded temples of Greece (Epidauros) and Italy (Rome and Tivoli) that we have studied, respectively ± 600 and ± 300 years earlier.  The Round Temple at Baalbek has a podium, but it is scalloped; it has an entablature on its columns, but it, too, is scalloped, all the way back to become tangent to the cella wall.  The niches in the cella wall have a molding over them that is like a bit of arcuated lintel.  The outward leaning of the columns, however, is not part of the design (notice the cracks opening in the entablature).  The whole is a playing with concavities against convexities, and there is nothing like it at any date in Rome.  Yet it is a "Roman temple" with podium and with a regular temple porch attached to it.

[K 206] [K 208]  As we go farther east, the styles become more mixed.  One of the most fascinating things to study (at the 4000 or 7000 level, however) between the 2nd and the 7th century is the gradual attenuation of Greco-Roman traditions as you go from site to site along trade routes farther and farther east; but, before the Greco-Roman traits disappear you notice that the art is beginning to show the effects of Chinese trade coming from the opposite direction.  The traders' oases, such as Dura Europos and Palmyra (see MAP 1) are fascinating.  At Dura the excavators found religious buildings of Palmyrene gods, of Mithraic worship, even a small church of the Christians there, besides the Synagogue of the Jewish merchants of Dura.  The walls of this Synagogue are covered with paintings.  In Israel itself, synagogues of the Roman period have religious symbolic motifs, such as the menorah and the rams' horns, in fine mosaic.  Here we have something unique: stories from the Hebrew Bible, the whole Moses cycle, with some of the figures labelled in Greek, and much more; it is like having all the readings for a Seder in pictures on the wall.  But, as everyone knows, Hebrew texts are not illustrated in this way.  Having images could lead to worshipping them.  Perhaps many of the congregation at Dura could not read, so needed pictures.  Perhaps the presence all around them of religions that used pictures influenced them (but that usually has the opposite effect).  There isn't another synagogue anywhere like this one.  The drawing is careful and rather good, though a little amateurish, being the work of a local artist in a caravan town; he renders the Temple in the shape of a Roman temple!  He knows about drapery folds, more or less, and shading; he puts little shadows under figures' feet, but as if he had learned to do so by rote (so they look like smudges).  One very interesting thing is that most of the figures are wearing tunics and trousers tucked into boots (felt boots); these are the garments of horseback-riding Iranians and of others who learned from them to wear such clothes.  The Funerary Portraits of the nobility and well-to-do of Palmyra in Syria are conventional in their subject matter but quite extraordinary in style.  Palmyra is important; strong Roman influences reached this far, but so did the Chinese silk trade (not that there is anything at all Chinese about any of their art).  Palmyra was a quite wealthy city, where the upper classes could pose as Romans both socially and in their images for eternity.  The poses and garments are Roman (Greco-Roman), the jewelry more or less so, but somewhat heavy and excessive, the technique of carving careful and rather skillful, BUT there is no organic or tectonic structure to the human figures; the man's eyes are pasted on (it looks so odd here, because this is not archaic art, not consistently patterned like the New York kouros of ca. 600 B.C.), one of the woman's arms is very small, but not to show a woman with a withered arm.  Here you have an interesting imitation of the shell (so to speak) of the Greco-Roman tradition by a rather good carver who has no sympathy with or understanding of the rationale (empirical + formal) that had given rise to the workshop tricks (e.g., for drapery) that he is using.  It is easy to forget that in the very many cases where this has happened in human history, we not only get very interesting and rich hybrid art but whatever art forms the less evolved culture might eventually have developed are nipped in the bud.  It can't be helped.  "There are no islands anymore", and there were already very few isolated places by ca. 250 A.D.




[G 129] [1601] [MB 49]  We already called attention to the Jewish Christian community in Rome in the 1st century, but the Epistle to the Romans is our evidence.  We have no churches, even house churches, preserved so early as that, nor did the Christians of Rome yet dig catacombs to bury their dead.  By the 3rd century, the time of the earliest catacomb paintings, Christianity was one of several non-Western salvation-oriented mystery religions in Rome; except when things came to a head, they were all tolerated.  The mysteries of Mithras, from Persia, was very popular, especially in the army, which spread it all the way to the Atlantic.  Orphism was still viable.  So were Bacchic mystery cults.  For intellectuals, Neo-Platonism was as much a religion as a philosophy.  And Christianity kept growing.  A mystery religion is one into which one must be initiated and which has rites both meaningless and inaccessible to those not initiated.  In Christianity, the mysterion is the partaking of the body and blood of Christ in the Mass, and the initiation is Baptism, which is a new birth and dying to the Old Adam.  The catacombs tunnel down from a cemetery plot owned by a member of the Christian congregation; the volcanic tufa under Rome makes this possible.  The poorest Christians had coffin-sized loculi [G 129] in the walls of the tunnels; these could be sealed with a slab or, if you could not afford a slab, with bricks.  Those who could afford to pay to have them dug out had family vaults (cubicula, plural; we already learned at Herculaneum that the word means "bedroom"; here you rest perpetually).  It is the cubicula that are painted.  It cannot be overemphasized that pagan Romans also had family vaults; very wealthy ones have elaborate vaults executed in painted stucco.  The pagan ones divide up the ceiling area in the same way; the Christians simply do with a ceiling what everyone does, make a tomb ceiling rather like a house ceiling.  Not all Christians, by any means, were poor, although Jesus himself had been poor; by the third century well-to-do persons were Christians, and in the fourth century the emperor's mother.  They seem to have thought it wrong to spend a king's ransom on grave plots and standing tombs and gilt stucco.  Thus they got around the prices of grave plots and the funerary art industry by initiating the catacombs.  Secrecy probably was not a primary motive, unless they craved secrecy for the feeling it gives of being special, but they did have commemorative funerary meals down in the catacombs at intervals after an interment.  The paintings show only what is essential: figures personifying Prayer (the orantes, plural) and figures from stories that stood for salvation: the Hebrew Children in the Fiery Furnace, Jonah, Daniel in the Lions' Den, Moses Striking the Rock, and, most frequent, The Good Shepherd (who lays down his life for his sheep).  The painting style is rapid, with no frills, but it is fully competent, metropolitan Roman, professionally trained work (the Dura synagogue paintings are painstaking but not quite professional-looking; these may be slapdash but are exactly like some of the minor paintings in third and fourth century houses at Ostia in their technique and drawing).  This is the art properly called Early Christian; it is simply the Roman art of the Christian religion before it was radically changed by being made the official religion of the Empire under Constantine.


[MG 17] [MG 50] [MG 51]  Diocletian was born at Split on the Dalmatian coast, now in Croatia.  He came to the throne in 284 and ruled for 20 years; he might have ruled longer, but he had decided orderly succession and proper preparation to rule the Empire were critically important.  He founded the Tetrarchy (see [K 210]) in which he was one of two Augusti (senior emperors) and two younger men were Caesars (juniors); after his twenty-year term he retired to the retirement palace he had been building in his native town.  Indeed, the modern name, Split (like its Italian alternative form, Spalato) has developed from the Greek phrase eis palation (at the palace).  The palace is laid out in a square, like a Roman military camp; in one quarter was the palace proper, in one Diocletian's mausoleum (like those built by Augustus and Hadrian, round (well, octagonal), like an Etruscan tomb mound), which today is the Cathedral of Split; the other two quarters were for military and administrative personnel.  The modern inhabitants of Split are very familiar with the palace, since the town is built right into it, which also explains why we need to make a reconstruction drawing to see it as it was ca. 300 A.D.  Notice the sea gate and the high octagonal dome of the mausoleum.  In the colonnades flanking the Peristyle, we see something important for the future (it occurs earlier in Asia Minor but this is the first time we have seen it): an arcade bearing a wall with the arches springing directly from the capitals of the columns.  Also, look at the pediment at the end of the peristyle: we saw architrave alternating with archivolt standing free at the "Canopus" in Hadrian's Villa, but here it is part of a pediment.
[K 210]  In Venice in the Piazza di San Marco, standing facing the façade, if you go to the corner of San Marco on your right you see built right into it (like a trophy) one of the strangest pieces of Roman statuary, the Porphyry Tetrarchs, Augusti embracing and Caesars embracing.  Porphyry is a very hard, purple igneous rock the color of imperial purple dye (from the murex shell) and these are only the best of several examples of portraits of the Tetrarchs in this stone.  Made in Egypt?  Whoever made them, wherever, even at this date they are not typical of Roman sculptural style.  You can find other work with large heads and short bodies, but not the rubber arms and the perfect absence of connectedness behind the armor.  It is not that they are bad; to the contrary, they are wonderful, unforgettable, even haunting.  They also are interesting for the birds' heads on the swords and for the emperors' wearing the slat armor that was worn by the Iranian horsemen of the middle east.  Although even at A.D. 300 these are far from typical, a hundred years earlier they would have been unthinkable.
[MB 72]  One place where you can see the same kind of figures as the Porphyry Tetrarchs is in the mosaic of the Great Hunt in the Imperial Villa at Piazza Armerina in Sicily.  This sprawling imperial villa with magnificent colored stone floor mosaics in nearly every room of every building is thought to have belonged to one of Diocletian's immediate successors.  The figure in the cylindrical hat, looking like doom itself, closely resembles the dourest of the four tetrarchs in the Venice group, Constantius I Chlorus (not to be confused with Constantine).  You may have seen the travelling exhibit of art from Tunisia a couple of years ago in the New Orleans Museum; if so you will see why art historians attribute these mosaics to a North African school of picture mosaicists.  These are the most exciting mosaics of the Late Roman period, and hunting seems to be their major interest.  In any case, the similarity in style between the porphyry statue and the mosaic proves that the hard stone is not the explanation for the unusual style of the statues.
Another great hunt scene from the Imperial Villa at Piazza Armerina.  To show the color range, here is one of my own teaching photos from the 1960s(?).
[MA 10] [MG 159] [G 83]  Constantine the Great, the first Christian emperor (but baptized only on his deathbed, being influenced by early theology overconcerned about the problem of sinning after having been washed sinless), was the son of Constantius Chlorus, one of the tetrarchs.  He called the Council of Nicaea in 325 and made Christianity the state religion (not yet outlawing all others, however).  He made Constantinople (Istanbul), named for himself, the capital of the Empire, instead of Rome.  After the Battle of the Milvian Bridge in 312, he was sole emperor until his death in 337.  The head and extremities of the colossal statue of Constantine that stood in the apse of the Basilica Nova give us an idea of one kind of Constantinian art, in which an attempt was made to recapture the detached ideal classicism of Augustan art (by now more than three centuries distant); it certainly is cool and detached, and its smooth hardness combined with the deeply and sharply drilled eyes make this six-foot-high head almost inhumanly terrifying, although such was not, probably, the emperor's and artist's intent.  The emperor's eyes, in this style of portrait, are as large and staring as in any Fayum portrait.  The competence of the sculptor, in any case, is extremely high; only, the whole meaning of the imperial image seems to have changed.

The Basilica Nova (New Basilica; it had been a long time since a great one had been built), [MG 159] [G 83], was begun before 312 by Maxentius and finished under Constantine (who had the position of the apse changed)--thus it has three equally correct names.  This is the one basilica that is the exception to the rule, the one Roman basilica, civic or religious, that is vaulted.  In the Central Hall of the Baths of Caracalla (above, [MG 9]), its inspiration is obvious; it is constructed exactly the same way as the great halls of the imperial baths, covered by groin vaults, and with the same arched windows between the exterior buttresses serving as a clerestory.  We might think of a timber roof as cheaper, but the contrary is true, since this span would need trees as tall, straight, and strong as imported cedars of Lebanon, while the wooden forms (which are called "centering") to make the groin vaults could employ lesser timbers, and these timbers would be reused, since one square unit of vaulting was built at a time; these units are called bays.  From one major support to the next is one bay.  The central space of the Basilica Nova is three bays long, as you read on the plan from the three X's over three squares.  If groin vaults are to be built at a grand scale, high and broad, as in the aula of Trajan's Market, the central halls of the Baths, and here, they must be built with perfectly round, exactly equal arches over squares (unequal sides > unequal arches).  At a smaller scale, builders could (and did) cheat in all sorts of ways, as we shall see.  Even when perfect, they exert no small thrust at the points where the groins converge on the major supports.  Here, as in the Baths of Caracalla, barrel vaults one storey high, perpendicular to the central space, buttress them (help prevent outward buckling that would lead to collapse), and on top of the walls dividing these barrel vaults, on the outside, above the roofs of the barrel vaults, there are external buttresses besides (we already saw some in the aula of Trajan's market).  Today the central groin vaults have long since fallen, but they may have stood for centuries and inspired architects (and persons who employed architects, such as bishops and abbots) visiting Rome.  These were true Roman concrete vaults.  Today three of the coffered perpendicular barrel vaults still stand with two of the external buttresses above them.  The walls are still excellent brick-encased concrete, magnificent even stripped of the colored marble veneers and columns on the interior.

[G 86] [A 436] [A 437: filed under Hadrian] [B 371]  Although the Arch of Constantine was erected in a hurry and mostly out of second-hand materials, which were not at the same scale or in the same style or even related to each other in subject matter, it seems to have been much admired in the Renaissance, since we see it used dozens of times in the background of paintings by the very best artists.  Not only did it stand for Rome but sculptors and architects picked up from it the idea of roundels as architectural decoration.  From a distance it looks fine, and even up close the narrow frieze just below the roundels, with its short, large-headed figures has a certain vigor and charm, although it is roughly executed with running drillwork mostly unretouched and may well have been done by sculptors usually engaged in carving sarcophagi (on [B 371] the carving of the figures of the Good Shepherd, just a little earlier, will show you what I mean).  Yet Constantine had obtained the services of a competent, even powerful artist for his colossal statue, as we have seen.  But when you look closely at the figures in the spandrels and at the figures on the basement, below the columns, you see work of unqualified crudity, as if the emperor and his architectural advisers really didn't care.  I have heard someone seeing these for the first time say, But these look downright Medieval!  That's unfair to the Middle Ages, because, as soon as Medieval sculptors try to do large sculpture, they really try, and do the very best they can.
The Good Shepherd Sarcophagus, dating from one of the last Barracks Emperor reigns or from the early years of Diocletian, is still Christian art from the last decades before Christianity was elevated to being the state religion, was still one of several salvation religions.  On sarcophagi, they all might use grapevines and vintage, which symbolize rebirth and new life, and the same sculpture workshops might work for adherents to differing beliefs; there is not specifically Christian style or technique.  But the figure of the Good Shepherd proves that this one is Christian.

*****


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