It is to most strangers approaching Naples for the first time a matter of surprise to discover that Vesuvius has two peaks rising out of the same base, and that far removed from all the range of Apennines which, dim and distant, hedge in the wide fertile plain.

When viewed from Naples, Monte Somma, the landward peak, appears scarcely less conical than its neighbour, which contains the crater; but from the other side it has a wholly different aspect, and if one looks at it from the Sorrento cliffs one perceives that it is no peak, but a long ridge, the segment of a circle which, if completed, would enfold the present eruptive cone.

The fact is important, for not only is it the key to all the topography of the mountain, but it is essential to the comprehension of what happened on that August day of the year 79 A.D., when the dead volcano woke to life. The broken circle of Monte Somma was complete in those days; and men looking up from Pompeii or Herculaneum saw a mountain vastly different from that which we behold, yet one which, from the part before us, can be reconstructed by an easy use of the imagination.

If a man will take his stand on the lower heights of the hills behind Castellammare, he will find that he looks over Pompeii, over Bosco Reale lying on the first slopes which swell upward from the plain, into the mouth of the gap which parts Vesuvius from Somma. Even from that distance he will obtain a forcible impression of the black cliff of Somma, towering almost sheer to the height of a thousand feet above the bottom of the gap, while the outer face of the same rock wall slopes towards the sunny plain and the woods of Ottajano with an incline so gentle as to be comparatively easy of ascent.

Clearly the two faces of Somma have been differently formed. The sheer one was, at least in part, the actual wall of the prehistoric crater, that caldron in which the volcanic forces raged in days so ancient that they had been clean forgotten when the Romans ruled the land. The present cone did not exist. The circuit of Monte Somma was unbroken, and lay clothed with green meadows up to the very summit. But where, then, is the rest of that gigantic wall? It was blown away by the eruption that destroyed Pompeii.

This is the first tremendous fact which the visitor to Naples has to realise; and it is well worth while to absorb it thoroughly before setting foot upon the mountain, for nothing else seen there carries with it the same impression of overwhelming, cataclysmal awe. It is from a distance that the terror of the thing can be appreciated best.

When one goes forward from the observatory on the mountain-side, skirting the flank of the eruptive cone, into that portion of the gap which is called the Atrio del Cavallo--though it would at certain times be found as safe to stable a steed in the Kelpie's flow as in this wilderness of burnt rock--the sight of the steep wall towering on one's left is infinitely striking. But at so close a distance, and in the immediate neighbourhood of so many other sights, it is scarcely possible to concentrate one's thoughts on the girth of the ancient crater. To comprehend the extent of the wall which has been blown away one must go further off, till one can distinguish the shape of Somma's wall, till one's eye can measure the vast size of the crater which would be formed by its completion, even allowing for the doubts which have been raised whether the circuit could have been so vast as this measurement would imply. There are some shattered fragments of the wall to be seen upon the south or seaward side of the volcano. The ridge where the white observatory building stands is one; another, named the "pedementina," appears as a shoulder of the mountain, clearly distinguishable from Naples. But these scattered remnants help little towards the general impression. It is by contemplating Somma that one learns to comprehend the appalling nature of the convulsion which, with little warning, blasted away so immense a portion of the mountain regarded by those who dwelt beneath it as one of the eternal hills.

Far from having any t.i.tle to immortality Vesuvius is among the youngest and most mutable of mountains. The present cone is, as I said, the creation of the last eighteen centuries, piled up by successive eruptions to something more than the height of Somma, which once, as its name implies, towered far above it. Even though the antiquity of the mountain be reckoned by the age of Somma, or of some earlier cone, on the ruins of which Somma may have reared itself, it is as nothing when set beside the great wall of mountains which sweeps round the plain and ends in the great crags of St. Angelo and the cliffs of Capri. Those hills may be termed "eternal" by as true a warrant as any on the earth. But long after they were shaped and fashioned the sea flowed over the Campagna Felice and the site of Naples. Vesuvius was a volcanic vent-hole underneath the water, like many another which now seethes and hisses deep down in the blue bay, forming lava reefs about which the best fish always cl.u.s.ter. Then came the upheaval of the sea floor, and Vesuvius stood on dry land, no longer a sea-drenched reef or islet, but a hill of ashes and of lava piled over a crack in the earth's crust, which belched forth fiery torrents for unnumbered years, and sank at last to rest after an outburst which, if one may judge by the hugeness of the crater it scooped out, must have been terrible almost beyond conception.

Yet it was completely forgotten! How many centuries of rest must it not have needed to erase from the minds of men all memory of a cataclysm so tremendous! In the days when doom was drawing near to the cities of the Campagna, an old tradition was current that fire had once been seen coming out of the summit of Vesuvius. Doubtless many people looking up at the green mountain pastures shrugged their shoulders at the tale. Yet Strabo, the geographer, remarked that the rocks upon the surface of the mountain looked as if they had been subjected to fire. It is difficult for us to detach the idea of terror from Vesuvius, and to contemplate it with thoughts at all resembling those which the dwellers in the buried cities bestowed upon it. There has, however, been one period when the summit of the mountain presented an aspect probably not far unlike that which a Pompeiian would have seen, had curiosity led him to the top after visiting his vineyards or his pastures on the lower slopes. That time was in the years immediately preceding the eruption of 1631. Vesuvius had been almost at rest for near five centuries, and there were many who believed its fires to be extinct.

The Abate Braccini ascended the mountain in 1612, nineteen years before the outbreak. Vesuvius was then, as it is now, somewhat higher than Somma, though the comparative level has been changed more than once in the last three centuries. On the summit Braccini found a profound chasm, a mile in circuit, surrounded by a bulwark of calcined stones, on which no vegetation grew. Having crossed it, he descended to a little plain, where he found plants of divers kinds, though in no profusion. But from that point there was a gulf of verdure. One could descend it by tortuous paths, which led to the very bottom of the abyss, and were used not only by woodcutters plying their trade among the dense forest trees which had grown up to maturity on the lava soil, but also by animals which strayed down to browse on the succulent, rich gra.s.s. Neither men nor cattle retained any fear of the green crater depths. Only the rim of calcined stones at the summit seems to have betrayed the volcanic fire of old days, except that here and there a wreath of smoke coiled away across the elms and oaks and the pleasant scrub of broom and other underwood.

About the same time a Neapolitan descended to the bottom of the crater. He found there a flat plain with two small lakes, the crater walls all pierced with caverns, through some of which the wind whistled with a noise which sounded awfully on that dim, lonely spot.

There were tales of treasure hidden in the caves, but no man had dared explore them. The crater was so deep that the descent and ascent occupied three hours.

Such was the aspect of the mountain in days when it had certainly rested for a shorter s.p.a.ce than in the great age of Pompeii and Herculaneum. All men must have known what none remembered in either of those doomed cities. The tales of terror spreading from the mountain were still fresh, yet they inspired no more fear than there is in Ischia to-day of Monte Epomeo; and the herdsmen sat and whistled all day long upon the slopes as they do now within an hour's climb of Casamicciola.

To this false security must be ascribed the fact that those who dwelt about the mountain paid little heed to the indications of an approaching break in its long rest. Profound changes were taking place within the abyss which Braccini has described; and on the 1st or 2nd of December, 1631, an inhabitant of Ottajano, visiting the summit, found the woods gone, the chasm filled up to the brim. A level plain had replaced the yawning gulf. The bold Ottajanese walked across from one side to the other, surprised, no doubt, to see what had occurred, but, so far as we can judge from Braccini's narrative, by no means afflicted with any sense of awe at the magnitude of the event, still less inclined to see in it a foretaste of danger for the country.

A few nights later the peasants of Torre del Greco and of Ma.s.sa di Somma began to complain that the growlings of the demons confined within the mountain disturbed their rest. Religious ceremonies were carried out, but the growls continued. On the night of the 15th, the air being extraordinarily clear, there hung in the sky above the mountain a star of strange size and brilliance. Dusk fell upon that day, and still there was no alarm; but somewhat later in the evening, a servant crossing the Ponte della Maddalena, on his way home from Portici, saw a flash of lightning strike the mountain; while at Resina a deep red glow appearing on the summit perplexed the villagers, for no such sight had been seen within the memory of living man.

As night pa.s.sed and day approached, the reports of those who had ventured up the slopes grew more awful. Peasants between Torre del Greco and Torre dell'Annunziata had seen smoke pour in volumes out of the Atrio del Cavallo. A herdsman on the mountain saw the pastures rent, and the sweet herbage turned into a raging blast furnace.

Santolo di Simone ventured some way up to ascertain the truth. He saw the ground cleft in divers places, out of which poured smoke and flame, while all the air was filled with thunderous reports, and great stones cast out of the fiery gulfs were hurled about the slopes.

Meantime dawn in Naples was at hand; and as the light increased, men going about the common affairs of their existence began to take note of an extraordinary cloud which hung above Vesuvius, having the precise shape of a gigantic pine tree. Some wondered and some feared, but none understood what was the terror which had come upon them, till Braccini, going into his library and taking down his Pliny, read them that vivid pa.s.sage which describes the sight young Pliny saw when he looked towards Vesuvius from Misenum. "There," said Braccini, as he closed the book, "there, in the words of sixteen centuries ago, is depicted what you see to-day."

That pine tree has become awfully familiar to most Neapolitans now alive; and to some of those who visit the city during an eruption it seems as if familiarity had bred contempt, and caused the occasion to be regarded as one for merriment, since it draws strangers there in countless numbers, and enriches every trader on the coast. But there is terror also in the streets when the shocks come rapidly, when doors and windows rattle with continuous concussions, and all the city reeks with sulphurous stenches coming one knows not whence. To this natural and human fear there was added, in the days of which Braccini wrote, the shock of a horrible surprise. The people were not dreaming of eruptions. They thought of them as little as did their far-distant kinsmen, who occupied the lovely sh.o.r.e when Pompeii was a city of the quick, not of the dead. That is what makes Braccini's tale so interesting. It reproduces for us, as nearly as is possible, a picture of what must have happened in the city streets on that morning when Pliny came sailing from Misenum at the urgent cry of Herculaneum for help, only to find his ships beaten off the coast by a hail of fiery stones.

The Cardinal Archbishop of Naples was at Torre del Greco on that fateful morning. He hurried back to the city, and having celebrated the Sacrament, and given orders for the rite to be solemnised throughout the city, he went up to the treasury where the relics of the saints were kept, intending to arrange a solemn procession. The blood of San Gennaro was found already liquefied and boiling! Great crowds accompanied the procession, the superst.i.tious Neapolitans turned to their priests and saints at the first sign of danger, and marched behind the relics with effusion of piety, the men scourging themselves till the blood ran from their shoulders, the women dishevelled and weeping, while crowds of boys chanted the Litany with extraordinary tenderness. The shops were shut. Naples had become a city of devotees.

But San Gennaro, though his blood had boiled, was not ready to disperse the peril. The shocks of earthquake grew louder. The concussions rattled faster from the mountain. Towards noon thick darkness stole down upon the city, as it had upon Misenum sixteen hundred years before. The smell of sulphur in the streets was choking.

Men asked themselves if so strong a reek could possibly travel from Vesuvius, and whether some vent had not opened close at hand. The houses, says Braccini, were swaying like ships at sea, and in the air there was a horrible roaring sound like the blast of many furnaces.

The darkness grew more dense, and tongues of lightning flashed continuously out of the mirk sky. The crashes became quite appalling.

Naples went wild with terror. The Viceroy sent drummers round the city appealing to the people to live cleanly in that which appeared to be the supreme moment of the created world. Men and women utterly unknown to each other ran up and embraced, seeking comfort, and crying, "Gesu, misericordia !"

So pa.s.sed the first day of the reawakened activity of Vesuvius. The night brought no abatement of terror. Early in the morning the crashes redoubled. The whole mountain seemed to be springing into the air, and all the surface of the earth rocked like water in a vessel which is violently shaken. At the same moment the sea retreated for near half a mile, and then swept back to a point far above its level. At Naples nothing more than that was seen, but the miserable inhabitants of Resina perceived that those mighty birth throes had ended in the ejection of a vast flood of lava, which was pouring down the mountain on the seaward side. The fiery torrent came on with such speed that it had reached the sea in less than an hour from the outbreak. As it advanced it split into seven streams, each one of which took a different course of devastation. One flowed in the direction of San Jorio, which it destroyed, engulfing, it is said, no less than three thousand persons, including a religious procession. A second arm of the flood destroyed Bosco Reale and Torre dell'Annunziata, running out more than two hundred yards into the sea, where it formed a reef so hot that the water round about it boiled for days. A third wrecked Torre del Greco, a fourth poured over Resina, and a fifth, pa.s.sing westwards, ruined San Giorgio a Cremano, and touched Barra and San Giovanni. Meantime a sixth stream, after filling the valleys divided by the ridge on which the observatory stands now, swept down on Ma.s.sa di Somma, and reached San Sebastiano.

In this point the eruption of 1631 differed from that which destroyed Pompeii. In the latter there was no lava, but only falling stone and ash, either dry, or compacted into mud by storms of rain and showers of water thrown out of the crater. But it was not by lava only that the country was devastated three centuries and a half ago. Ashes fell also in such ma.s.ses that near Vesuvius they were heaped up twelve feet deep, and great quant.i.ties of them drifting across southern Italy fell upon the sh.o.r.es of that lovely bay where Taranto looks across to the snow-topped mountains of Calabria. Stones fell also of astounding weight. One which was thrown into Ma.s.sa di Somma is reported to have weighed 50,000 pounds; while another, which fell as far away as Nola, was of such dimensions that a team of twenty oxen could not stir it.

When this great eruption ended, the relative heights of Vesuvius and Somma were reversed, and the eruptive cone, which had risen 50 feet above its neighbour, stood nearly 200 feet below it. It is almost the rule that in great eruptions Vesuvius suffers loss of height, while the cone is piled up by smaller ones.

Such is the country in which a teeming population elects to live. It is said that no less than 80,000 persons have their homes on the slopes of the mountain--a fact which appears inexplicable to those who do not know by experience how small the loss of life may be in the greatest eruption. It is true that in 1631 a vast number of persons perished. But this was due probably in some measure to the fact that they did not know their danger and took no proper measures to avoid it. The men then living had seen nothing like the sudden peril which beset them. But every peasant of our day is well aware what lava floods may do, and how their course will lie. All have their little images of San Gennaro, which they set up in their cottages, and many can tell how the good saint has averted from his vineyard a fiery torrent which crawled on to the point when it seemed as if not even heavenly power could avert destruction, yet twisted off to one side and left him scatheless. At times, of course, the velocity of the lava is so great that no man can do aught but flee. In 1766 Sir William Hamilton saw a stream which ran in the first mile with a velocity "equal to that of the River Severn at the pa.s.sage near Bristol," while in 1794 the lava ran through Torre del Greco at the rate of one foot in a second. Yet the loss of life was small. "Napoli fa i peccati,"

say the people, "e Torre li paga !"--Naples commits the sins and Torre pays for them. It is true enough; yet the toll is taken more in property than life. Moreover, the after-fruits of an eruption are worth rubies to the people, so fertile is the soil created by the decaying lava.

[Ill.u.s.tration: CARDPLAYERS--NAPLES]

That the loss of life remains so small is the more surprising in view of the fact that Vesuvius can by no means be trusted to discharge itself on all occasions by the main crater. In fact, the flanks of the mountain, strengthened and compacted as they are by the outflow of countless lava streams, are yet seamed and fissured by the rupture of the surface to form other vents. Occasionally these "bocche" mouths, as the Italians call them, have opened far down the slopes among the cultivated fields and vineyards. It was so in 1861, not fortunately one of the greatest of eruptions. The bocche of that year are on the hillside no great way above Torre del Greco. Nothing, in fact, is certain about the operation of volcanic forces, and this is a fact which may be borne in mind by those who elect to ascend the mountain during an eruption. Sir William Hamilton in 1767 had a narrow escape.

"I was making my observations," he says, "upon the lava, which had already from the spot where it first broke out reached the valley"--that is, the Atrio del Cavallo--"when on a sudden, about noon, I heard a violent noise within the mountain, and at a spot about a quarter of a mile off the place where I stood, the mountain split, and with much noise from this new mouth a fountain of liquid fire shot up many feet high, and then like a torrent rolled on directly towards us. The earth shook, and at the same time a volley of stones fell thick upon us; in an instant clouds of black smoke and ashes caused almost a total darkness; the explosions from the top of the mountain were much louder than any thunder I ever heard, and the smell of the sulphur was very offensive. My guide, alarmed, took to his heels; and I must confess I was not at my ease. I followed close, and we ran near three miles without stopping."

To run three miles over the broken and uneven lava reefs of the Piano, with a fiery torrent hunting close behind, is not an experience which would be relished by the ordinary tourist, however far it might be sweetened in the retrospect to the adventurous man of science. Yet happy is the man who in such a case gets off with a sharp run. In 1872 a party of tourists were less happy. The terrible eruption of that year deserves attention, being certainly the greatest within the present generation, and fortunately it has been described with knowledge and precision by Professor Palmieri who, with n.o.ble devotion to the cause of science, had spent so many years in the observatory planted on the barren ridge of trachyte which divides the two valley-arms which the Atrio del Cavallo projects towards Naples. Those valleys receive the streams of lava which are ejected into the Atrio, and when the volume of the flow is large, it has happened that the observatory has been almost engirdled with the red-hot torrents--a position of which, if the danger may be exaggerated, the awe certainly cannot, and which must fill all men with admiration for the ill.u.s.trious scientists who endure it.

Palmieri regarded the eruption as the last phase of a series of disturbances which began at the end of January, 1871. From November, 1868, until the end of December, 1870, the mountain had been almost quiet. Only a few fumaroles discharging smoke bore witness to the need for watchfulness. "Early in 1871 the delicate instruments of the observatory which register earth tremors were observed to be slightly agitated, and the crater discharged a few incandescent projectiles, detonating at the same time, but not remarkably. On the 13th of January an aperture appeared on the northern edge of the upper plain of the Vesuvian cone; at first a little lava issued from it, then a small cone arose which threw out incandescent projectiles and much smoke of a reddish colour, whilst the central crater continued to detonate more loudly and frequently. The lava flow continued to increase until the beginning of March, without extending much beyond the base of the cone, although it had great mobility. In March the little cone appeared not only to subside but even partly to give way, as almost always happens with eccentric cones when their activity is at an end.... A little smoke issued from the small crater, and a loud hissing from the interior was audible. By lying along the edge I could see a cavity of cylindrical form about ten metres deep.... The bottom of the crater was level, but in the centre a small cone of about two metres had formed, pointed in such a manner that it possessed but a very narrow opening at the apex, from which smoke issued with a hissing sound, and from which were spurted a few very small incandescent stones and scoriae. This little cone increased in size as well as in activity until it filled the crater and rose four or five metres above the brim. New and more abundant lavas appeared near the base of this cone, and pouring continually into the 'Atrio del Cavallo' rushed into the 'Fossa della Vetrana' in the direction of the observatory, and towards the Crocella, where they acc.u.mulated to such an extent as to cover the hillside for a distance of about three hundred metres.... For many months the lava descended from the cone and traversed the 'Atrio del Cavallo.'... On the 3rd and 4th of November a copious and splendid stream coursed down the princ.i.p.al cone on its western side, but was soon exhausted. The new small cone appeared again at rest, but did not cease to emit smoke...."

In the beginning of January, 1872, the little cone again became active, the crater of the preceding October resumed strength, there were bellowings, projectiles, and copious outflows of lava. In February the action of the hidden forces abated somewhat; but in March, at the full moon, the cone opened on the north-western side, the cleavage being marked out by a line of fumaroles, and a lava stream issued from the lowest part without any noise and with very little smoke, pouring down into the Atrio del Cavallo as far as the precipices of Monte Somma. This lava ceased flowing after a week, but the fumaroles still pointed out the clefts, and between the small re-made cone and the central crater a new crater of small dimensions and interrupted activity opened. On the 23rd of April, another full moon, the observatory instruments were agitated, the activity of the craters increased, and on the evening of the 24th splendid lavas descended the cone in many directions. The spectacle was of superb beauty. There was clear moonshine, and from Naples the outline of a vast fiery tree was seen to be traced on the black side of the mountain. Strangers poured into the city. The long period of activity without destruction disposed them to regard the show as a display of fireworks. Half Naples set its heart on ascending the mountain by night, and little wonder, for the moonlit bay reddened by the wide reflection from the burning breast of the volcano made a sight on which no man could look without the sense of witnessing a thing which was absolutely unearthly in the splendour of its beauty.

But on the following morning the flow was nearly spent. One stream only continued to flow from the base of the cone. And this one was almost inaccessible, by reason of the roughness of the ground. As night fell the visitors began to arrive. No less than 120 carriages are said to have pa.s.sed the hermitage by dusk. Palmieri tried to dissuade the sightseers from going on, but in vain. The display of the previous night had been too splendid. They hoped continually that the show might be repeated. It was, but in a manner which they little looked for.

The crater was casting out huge stones, with detonations resembling the discharge of whole parks of artillery at once. From time to time the din ceased absolutely, then low and softly it began again, and gained force quickly till it crashed as loudly as before. When midnight was past, immense clouds of smoke began to pour out of all the craters, and lava broke out simultaneously from many points upon the slopes. Out of the chief crater rose the awful pine tree. The detonations grew more constant. There was still time to flee; but the spectacle was growing grander every moment, and inexperienced guides led forward a large party into the Atrio, where they stood watching such a sight as living men have rarely seen. At half-past three came the catastrophe. The whole of the great cone rent itself from top to bottom with an appalling crash, casting out a huge stream of fiery lava. At the same moment two large craters formed upon the summit, discharging showers of red-hot scoriae, while the pillar of the pine tree rose up to many times more than even the vast height which it then stretched across the sky. A cloud of choking blinding smoke enveloped the visitors, a fiery hail rained down on them, the lava broke out immediately by them, and barred their retreat to the observatory. Eight medical students were engulfed by the fire, with others who were not known. Eleven more were grievously injured; and when the survivors were able to reach the observatory, it was in several cases but to die.

The lava flow from this grand fissure was restrained for some time within the Atrio; but issuing thence at last divided, one branch threatening Resina, but stopping happily almost as soon as it reached the cultivated ground, while the larger branch ran through the Fossa della Vetrana, traversing its whole length of 1,300 metres in three hours. It dashed into the Fossa della Faraone, then again divided, one arm of the diminished stream destroying a great part of the villages of Ma.s.sa and San Sebastiano, and flowing on so far in the direction of Naples that had it continued but for four-and-twenty hours longer it must have flowed into the city streets.

It may be supposed that whilst this awful eruption was proceeding, the position of the courageous men of science in the observatory was rather glorious than safe. Nothing can exceed the value of the services rendered to science by these gentlemen who elect to spend their lives upon a spot which is always dreary and exposed to constant danger. They are of the outposts of mankind. I take my cap off to their stout hearts and their keen intellects. To them their danger is a little thing, and they would not thank me if I were to dwell too long on it. But I will take Professor Palmieri's own words, and beg those who read to ponder over what is involved in them. "On the night of the 26th of April the observatory lay between two torrents of fire.

The heat was insufferable. The gla.s.s of the windows was hot and crackling, especially on the side of the Fossa della Vetrana. In all the rooms there was a smell of scorching."

[Ill.u.s.tration: NAPLES--A SLUM.]

Meantime the spectacle of the mountain must have been bewilderingly grand. The cone was seamed and perforated on every side, and the fiery lava issuing from the vents covered it so completely that, in Palmieri's picturesque expression, Vesuvius "sweated fire." On the 27th of April the igneous period of the eruption was over, though the rain of ashes and projectiles became more abundant, the crashes were louder than ever, the pine tree was of a darker colour, and was continually furrowed by flashes of lightning; while on the 29th stones fell at the observatory of such size that the gla.s.s of the unshuttered windows was broken. By midnight, of that day, however, there was a marked improvement, and on the 1st of May the eruption was at an end.

The visitor who strolls to-day through the main street of Portici sees nothing but a continuation of the squalid life and poverty of building which have followed him continuously from the eastern quarters of the city. The mean aspect of the town is unexpected. One had not looked for any striving after the dream of cla.s.sical beauty, once so frequent and so great upon the Campanian sh.o.r.e. But this was the chosen pleasure resort of the Bourbon kings; and some greater dignity might have been expected in the close neighbourhood of a palace.

The palace is there still. The noisy street runs through its courtyard. Poor deserted palace! It has lost its royalty of aspect, and for all one sees in pa.s.sing by the discoloured walls and shuttered windows it might be any poverty-stricken crowded palazzo in Naples.

But turn in beneath the archway on the right, and go by the large cool staircase, across the clanking stones, until you emerge into the hot spring sun again. There is a n.o.ble semicircular expanse, flanked on either hand by a terrace, adorned with busts and vases, and with stairs descending to the garden, which stretches down to a belt of pine trees, cut away a little in the centre to reveal that band of heavenly blue which is the sea. The young trees standing by the pine are in fresh leaf; the gra.s.s is full of poppies; white b.u.t.terflies are skimming to and fro across it; all is silent and deserted. A bare-armed stable-boy comes out to train a skinny pony round the terrace. The stucco of the walls is peeling off; the long rows of windows are shuttered; the sentry boxes stand empty. It is forty years since any courtier came out to taste the evening freshness on this spot where Sir William Hamilton talked of the wonders of the buried cities so long and eagerly that he forgot to watch the wife and friend whose sins the world forbears to reckon when it remembers the beauty of the one and the valour and wisdom of the other.

It is but a little way beyond the palace to the spot where the Prince d'Elboeuf is said, while sinking a well in the year 1709, to have chanced on things of which he did not know the meaning. This is one of the fables which demonstrate the extreme difficulty of speaking the truth, even about important and world-famous matters. Nothing is more certain than that the prince sank his "well" with the hope and intention of drawing up not water, but antiquities. The fact is, that in the year just mentioned he bought a country house, which stood near the site of the present railway station. It was perfectly well known that Herculaneum lay buried underneath Portici or Resina, and the prince began excavating of set purpose. It was mere chance which guided him to a spot where his first shaft came right down on the benches of the theatre, thus letting in to Herculaneum the first gleam of daylight which had entered there for more than sixteen centuries.

Not much more than that stray glimmer has enlightened the old academic city even now; for none of the energy and learned patience lavished daily on Pompeii has been expended here.

Herculaneum as it lies to-day, awaiting its turn for excavation, creates in one respect an impression which Pompeii excites in a far less degree. It retains the visible aspect of a buried city. The sense of overwhelming tragedy is never lost. Pompeii stands free and open under the clear sky; so large, so perfect, that in the fascination of its archaeology one is somewhat led away from the disaster. It is a deserted city. One knows what it was that drove the people out, but it is easy to forget. Perhaps one cares more to gloat over the rich old life laid bare so freely than to burden one's mind with memory of that day when the glow of August sunshine turned to darkness "as of a room shut up," and death came down from the mountain into the crowded streets.

At Herculaneum the mere fragment of a street, the few half-buried houses, the pit in which they lie, the cavernous darkness which hides the amphitheatre, stimulate the imagination till it leaps to a sudden comprehension of what it was that happened on that day of woe. One pa.s.ses from the dirty street of Resina into a building of no dignity, somewhat like the entrance to the public baths of some small English town. A guide appears and guides one down a flight of steps which are at first palpably modern. But ere long the tread changes. One is on an ancient stair, and almost immediately the guide pauses in a vaulted corridor running right and left through perfect darkness. The height is hardly more than permits a tall man to walk upright. Here and there an arched opening in the corridor goes one sees not whither. Pa.s.sing under such an arch one may descend four steps, beyond which rises another wall. That wall is tufa; it is no part of the structure. It flowed or fell here when it was half liquid; it came out from Vesuvius, and it is what overwhelmed the city.

The steps, thus interrupted by the intrusion of what are now stone walls, are the upper tier of seats in the amphitheatre. A gleam of daylight breaks the darkness: it comes from the Prince d'Elboeuf's shaft, which pierces the stone steps and goes down far below them. One looks up the tubular wet boring and then plunges forward to the bottom of the theatre through blackness barely scattered by the candles which the guide carries.

A short descent of nineteen steps in all brings one to the floor of the theatre, at the spot appropriated to the orchestra. The stage is a low platform, approached on either hand by steps. It is deprived of some part of its original depth by pillars and barriers hardened out of that choking mud which poured down from the mountain. Such barriers present themselves on every side; they leave the theatre formless; they create gangways where none existed, walls where the spectators had clear line of vision, darkness where the sun shone freely eighteen centuries ago. In one of these gangways behind the stage the clear impression of human features looks down from the rough wet ceiling; it is the impression of a player's mask. There were doubtless many in the theatre when the seething flood rolled in.

Among this darkness and these sights the sense of tragedy tightens on the imagination. The cruelty of the ruin stands before one and is not to be set aside. There are remains of frescoes here and there; but they are almost destroyed, and serve only to increase the pity that a theatre which once rang with laughter and glowed so richly with soft light and colour should lie wet, buried and forsaken in the darkness.

It is sometimes said that Herculaneum was destroyed by lava--the guides use the word to this day. But Vesuvius threw out no lava in the great eruption which destroyed the cities. It ejected much in prehistoric times. Pompeii itself is built upon a lava ridge, which in the old days was quarried for millstones, thus giving rise to an important industry. But in historic times lava did not flow--if we may trust geologists--till the year 1036 A.D.

Herculaneum was destroyed by fragments of pumice stone and ashes, scarcely distinguishable from those which one may see raked away from the half-uncovered walls of some new house at Pompeii. With this storm of falling cinders--how dense and thick one may picture dimly by remembering once more that all the seaward wall of the vast old crater was being blown away--with this crushing, choking shower, came torrents of rain, enough to turn the falling ashes to a sort of mud, which hardened into tufa. Indeed, just as the yellow tufa of Posilipo is composed of volcanic ash ejected underneath the sea, and is thus formed of ash and water, such precisely is the crust which hardened over Herculaneum, and holds the city in its clutch unto this hour.

Perhaps the mud formed on the mountain slopes, and came rolling down upon the town. Professor Phillips thought it formed within the crater.

Some obvious warning of great peril there must have been, and that quite early on the fatal 24th of August; for it was not long past noon when a message reached Pliny at Misenum, begging for his ships, since escape was even then impossible except by sea. Already Pliny, looking from Misenum, saw the mountain topped by that vast and awful cloud shaped like a pine tree, out of which ashes were raining down on the three cities. His ships, approaching the coast towards evening, ran into a hail of pumice stone. The ashes fell hotter and hotter on the decks, and in continually larger ma.s.ses. The sea ebbed suddenly. Ruins were tumbling from the mountain. There was no possibility of giving help to the doomed city, and Pliny gave orders to steer off the coast.

No eye has seen Herculaneum from that day to this. What became of the citizens is not known. Comparatively few bodies have been found; but the excavations were too imperfect to prove that somewhere in the city bounds they do not lie in heaps.