The short winter day was beginning to draw in when they approached silently the city walls, solemn with their towers and gates, endless as it seemed, and enclosing, one felt vaguely, an endless, distant, invisible city.

The sound of its bells came as from afar to meet the sacrilegious men.

VI

The culminating sacrilege was yet to come. The place that witnessed it remains unchanged—a half-deserted church among the silent grass-grown lanes, the crumbling convent walls, and ill-tended vineyards of the Aventine; a hill that has retained in Christian times a look of its sinister fame in Pagan ones. Among the cypresses, which seem to wander up the hillside, rises the square belfry, among whose brickwork, flushed in the sunset, are inlaid discs of porphyry torn from some temple pavement, and plates of green majolica brought from the East, it is said, by pilgrims or Crusaders. The arum-fringed lane widens before the outer wall of the church, overtopped by its triangular gable. Behind this wall is a yard or atrium, the pavement grass-grown, the walls stained with great patches of mildew, and showing here and there in their dilapidation the shaft and capital of a bricked-up Ionic pillar. The place tells of centuries of neglect, of the gradual invasion of resistless fever; and it was fitly chosen, some fifty years ago, for the abode of a community of Trappists. In the reign of Innocent VIII. it was still nominally in the hands of certain Cistercians; but the fever had long driven these monks to the more wholesome end of the hill, where they had erected a smaller church; and the convent had served for years as a fortress of the turbulent family of the Capranicas, one of whose members was always the nominal abbot, with the Cardinal's hat, and title Jervase and Protasius. And now, at the end of the fifteenth century, a Cardinal Ascanio Capranica, famous for his struggle in magnificence and sinfulness with the magnificent and sinful young nephews of Pope Sixtus, had determined to restore the fortified monastery, to combat the fever by abundant plantations, and to make the church a monument of his splendour. And, in order to secure some benefit by his own munificence, he had begun by commissioning Domenico Neroni to design and execute a sepulchre three storeys high, full of carvings, and covered with statues, so that his soul, if sent untimely to heaven, might not be dishonoured by the unworthy resting-place of its trusty companion, the Cardinal's handsome and well-tended body.

This church of SS. Jervase and Protasius, which imitated, like most churches of the early Christian period, the form of a basilica or court of law, was constructed out of fragments of Pagan edifices, and occupied the site of a Pagan edifice, whose columns had been employed to carry the roof of the church, or, when of porphyry or serpentine, had been sawed into discs for the pavement. On the slant of the hill, supporting the apse, encircled by pillarets, is a round mass of masonry, overgrown with ivy and ilex scrub, the remains of some antique bath or grotto; and under the battlemented walls, the cloistered courts of the convent, there stretches, it is said, a network of subterranean passages running down to the Tiber. Four hundred years ago they were not to be discovered if looked for, being completely hidden by the fallen masonry and the cypress roots and growths of poisonous plants—nightshade, and hemlock, and green-flowered hellebore; but wicked monks had sometimes been sucked into them while digging the ground, or decoyed into their labyrinths by devils. Was it possible that there had lingered on through the ages a vague and horrified remembrance of those rites, the discovery of whose mysterious and wide-spread abominations had frozen Rome with horror in her most high and palmy days; and was there a connection between those neophytes, wandering with blood-stained limbs and dishevelled locks among the groves of the Aventine, then rushing to quench their burning torches in the Tiber, two centuries before Christ, and the devils who troubled the Benedictines of SS. Jervase and Protasius? These evil spirits would appear, it had been said, in the cloisters of the convent, processions carrying lights and garlands; and on certain nights, when the monks were in prayer in their cells, strange sounds would issue from the church itself, of flutes and timbrels, and demon laughter, and demon voices chanting some unknown litany, and clearly aping the mass; and Cardinal Capranica was blamed by many pious persons for his rash intention of filling once more the deserted convent, and exposing holy men to the wrath of such very pertinacious devils. Meanwhile mass upon mass was said to clear the place of this demoniac infection. It was in this church that the sacrilege of Domenico and Filarete rose to its highest, and that an event took place which the men of the fifteenth century could scarce find words to designate.

Domenico had grown tired of his friend's archæological impieties. It gave him no satisfaction to pour out wine, burn incense, arrange garlands, and even cut the throats of animals according to a correct Pagan ritual. It was nothing to him that Horace and Ovid and Tibullus should have done alike. He was a good Christian, never doubting for a moment the power of the Blessed Virgin, the saints, and even the smallest and meanest priest, nor the heat of hell-fire. But he wanted to have the secret of antique proportions, and he was convinced that this secret could be communicated only by a Pagan divinity, just as certain theological mysteries, such as the use of the rosary, had been revealed to the saints by Christ or the Virgin. The Pagan gods were devils, and to hold communication with devils was mortal sin and sure damnation. But lots of people communicated with devils for much more paltry motives, for greed of gold or love of woman, and were yet saved by the intercession of some heavenly patron, or found it worth while not to be saved at all. Domenico, like them, put the question of salvation behind him. He might think of that afterwards, when he had possessed himself of the proportion of the ancients. At all events, at present he was willing to risk everything in order to attain that. He was determined to see that god of the heathens, not as he had seen him once in the house of Messer Neri Altoviti, cut out of marble, but alive, moving, speaking; for that was the god.

The god was a devil. Now it is well known that there is a way of compelling every devil to show himself, providing you use sufficiently strong spells. They had sacrificed goats and lambs enough, also doves, and had burned perfumes, and spilt wine sufficient for one of Cardinal Riario's suppers. It was evidently not that sort of sacrifice which would rejoice the god or compel him to show himself. For weeks and weeks Domenico ruminated over the subject. And little by little the logical, inevitable answer dawned upon his horrified but determined mind. For what was the sacrifice which witches and warlocks notoriously offered their Master?

The place could not be better chosen. This church was full, every one knew, of demons, who were certainly none other than the gods of the heathen, as Tertullian, Lactantius, Athenagoras, Justin Martyr, and all those other holy doctors had written. It was deserted, its keys in the hands of Cardinal Capranica's confidential architect and decorator; and there were masses being said every holiday to scare the evil spirits. The sacrament was frequently left on the altar.

All this Domenico expounded frequently to Filarete. But Filarete's classic taste did not approve of Domenico's methods, which savoured of vulgar witchcraft; perhaps also the learned man, who did not want the secret of antique proportion, recoiled from a degree of profanity and of danger, both to body and soul, which his companion willingly incurred in such a quest as his. So Filarete demurred for a time, until at length his feebler nature took fire at Domenico's determination, and the guilty pair fixed upon the day and place for this unspeakable sacrilege.

The Church of SS. Jervase and Protasius has undergone no change since the feast of Corpus Christi of the year 1488. The damp that lies in the atrium outside, making the grass and poppies sprout round the Byzantine pillar which carries a cross over a pine-cone, has invaded the flat-roofed nave and the wide aisles, separated from it by a single colonnade. A greenish mildew marks the fissures in the walls, rent here and there by landslips and earthquakes. The cipolline columns carrying the round arches on their square capitals are lustreless, and their green-veined marble looks like long-buried wood. The mosaic pavement stretches its discs and volutes of porphyry and serpentine or yellowed Parian marble, a tarnished and uneven carpet, to the greenish-white marble steps of the chancel. The mosaics have long fallen out of the circle of the apse; and the frescoes, painted by some obscure follower of Giotto, have left only a green vague stain over the arches of the aisle. Pictures or statues there are none, and no conspicuous sepulchre. Only, over the low entrance, a colossal wooden crucifix of the thirteenth century hangs at an angle from the wall, a painted Christ, stretching his writhing livid limbs in agony opposite the high altar. It was in this stately and desolate church, under the misty light that pours in through the wide windows of grey coarse glass, and on the marble altar, facing that effigy of the dying Saviour, that, in derision as it were of the miracle which the church commemorates on that feast-day, Domenico and Filarete were about to offer up to the demons Apollo, Bacchus, and Jove the freshly consecrated wafer, the very body and blood of Christ.