It was a dark, mild evening of early spring. As the fleet of vessels dropped slowly down the river, they suddenly became luminous, each ship flaming out of the darkness, a phantom of living fire. The very waves of the Scheldt seemed glowing with the conflagration, while its banks were lighted up with a preternatural glare. It was a wild, pompous, theatrical spectacle. The array of soldiers on both aides the river, along the dykes and upon the bridge, with banners waving, and spear and cuirass glancing in the lurid light; the demon fleet, guided by no human hand, wrapped in flames, and flitting through the darkness, with irregular movement; but portentous aspect, at the caprice of wind and tide; the death-like silence of expectation, which had succeeded the sound of trumpet and the shouts of the soldiers; and the weird glow which had supplanted the darkness-all combined with the sense of imminent and mysterious danger to excite and oppress the imagination.

Presently, the Spaniards, as they gazed from the bridge, began to take heart again. One after another, many of the lesser vessels drifted blindly against the raft, where they entangled themselves among the hooks and gigantic spearheads, and burned slowly out without causing any extensive conflagration. Others grounded on the banks of the river, before reaching their destination. Some sank in the stream.

Last of all came the two infernal ships, swaying unsteadily with the current; the pilots of course, as they neared the bridge, having noiselessly effected their escape in the skiffs. The slight fire upon the deck scarcely illuminated the dark phantom-like hulls. Both were carried by the current clear of the raft, which, by a great error of judgment, as it now appeared, on the part of the builders, had only been made to protect the floating portion of the bridge. The 'Fortune' came first, staggering inside the raft, and then lurching clumsily against the dyke, and grounding near Kalloo, without touching the bridge. There was a moment's pause of expectation. At last the slow match upon the deck burned out, and there was a faint and partial explosion, by which little or no damage was produced.

Parma instantly called for volunteers to board the mysterious vessel. The desperate expedition was headed by the bold Roland York, a Londoner, of whom one day there was more to be heard in Netherland history. The party sprang into the deserted and now harmless volcano, extinguishing the slight fires that were smouldering on the deck, and thrusting spears and long poles into the hidden recesses of the hold. There was, however, little time to pursue these perilous investigations, and the party soon made their escape to the bridge.

The troops of Parma, crowding on the palisade, and looking over the parapets, now began to greet the exhibition with peals of derisive laughter. It was but child's play, they thought, to threaten a Spanish army, and a general like Alexander Farnese, with such paltry fire-works as these. Nevertheless all eyes were anxiously fixed upon the remaining fire-ship, or "hell-burner," the 'Hope,' which had now drifted very near the place of its destination. Tearing her way between the raft and the shore, she struck heavily against the bridge on the Kalloo side, close to the block-house at the commencement of the floating portion of the bridge. A thin wreath of smoke was seen curling over a slight and smouldering fire upon her deck.

Marquis Richebourg, standing on the bridge, laughed loudly at the apparently impotent conclusion of the whole adventure. It was his last laugh on earth. A number of soldiers, at Parma's summons, instantly sprang on board this second mysterious vessel, and occupied themselves, as the party on board the 'Fortune' had done, in extinguishing, the flames, and in endeavoring to ascertain the nature of the machine. Richebourg boldly directed from the bridge their hazardous experiments.

At the same moment a certain ensign De Vega, who stood near the Prince of Parma, close to the block-house, approached him with vehement entreaties that he should retire. Alexander refused to stir from the spot, being anxious to learn the result of these investigations. Vega, moved by some instinctive and irresistible apprehension, fell upon his knees, and plucking the General earnestly by the cloak, implored him with such passionate words and gestures to leave the place, that the Prince reluctantly yielded.

It was not a moment too soon. The clockwork had been better adjusted than the slow match in the 'Fortune.' Scarcely had Alexander reached the entrance of Saint Mary's Fort, at the end of the bridge, when a horrible explosion was heard. The 'Hope' disappeared, together with the men who had boarded her, and the block-house, against which she had struck, with all its garrison, while a large portion of the bridge, with all the troops stationed upon it, had vanished into air. It was the work of a single instant. The Scheldt yawned to its lowest depth, and then cast its waters across the dykes, deep into the forts, and far over the land. The earth shook as with the throb of a volcano. A wild glare lighted up the scene for one moment, and was then succeeded by pitchy darkness. Houses were toppled down miles away, and not a living thing, even in remote places, could keep its feet. The air was filled with a rain of plough-shares, grave-stones, and marble balls, intermixed with the heads, limbs, and bodies, of what had been human beings. Slabs of granite, vomited by the flaming ship, were found afterwards at a league's distance, and buried deep in the earth. A thousand soldiers were destroyed in a second of time; many of them being torn to shreds, beyond even the semblance of humanity.

Richebourg disappeared, and was not found until several days later, when his body was discovered; doubled around an iron chain, which hung from one of the bridge-boats in the centre of the river. The veteran Robles, Seigneur de Billy, a Portuguese officer of eminent service and high military rank, was also destroyed. Months afterwards, his body was discovered adhering to the timber-work of the bridge, upon the ultimate removal of that structure, and was only recognized by a peculiar gold chain which he habitually wore. Parma himself was thrown to the ground, stunned by a blow on the shoulder from a flying stake. The page, who was behind him, carrying his helmet, fell dead without a wound, killed by the concussion of the air.

Several strange and less tragical incidents occurred. The Viscomte de Bruxelles was blown out of a boat on the Flemish side, and descended safe and, sound into another in the centre of the stream. Captain Tucci, clad in complete armour, was whirled out of a fort, shot perpendicularly into the air, and then fell back into the river. Being of a cool temperament, a good swimmer, and very pious, he skilfully divested himself of cuirass and helmet, recommended himself to the Blessed Virgin, and swam safely ashore. Another young officer of Parma's body-guard, Francois de Liege by name, standing on the Kalloo end of the bridge, rose like a feather into the clouds, and, flying quite across the river, alighted on the opposite bank with no further harm than a contused shoulder. He imagined himself (he said afterwards) to have been changed into a cannon-ball, as he rushed through the pitchy atmosphere, propelled by a blast of irresistible fury.