Three barriers, one within the other, had now been passed, and the flotilla, advancing with the advancing waves, and driving the enemy steadily before it, was drawing nearer to the beleaguered city. As one circle after another was passed, the besieging army found itself compressed within a constantly contracting field. The "Ark of Delft," an enormous vessel, with shot-proof bulwarks, and moved by paddle-wheels turned by a crank, now arrived at Zoetermeer, and was soon followed by the whole fleet. After a brief delay, sufficient to allow the few remaining villagers to escape, both Zoetermeer and Benthuyzen, with the fortifications, were set on fire, and abandoned to their fate. The blaze lighted up the desolate and watery waste around, and was seen at Leyden, where it was hailed as the beacon of hope. Without further impediment, the armada proceeded to North Aa; the enemy retreating from this position also, and flying to Zoeterwoude, a strongly fortified village but a mile and three quarters from the city walls. It was now swarming with troops, for the bulk of the besieging army had gradually been driven into a narrow circle of forts, within the immediate neighbourhood of Leyden. Besides Zoeterwoude, the two posts where they were principally established were Lammen and Leyderdorp, each within three hundred rods of the town. At Leyderdorp were the head-quarters of Valdez; Colonel Borgia commanded in the very strong fortress of Lammen. The fleet was, however, delayed at North Aa by another barrier, called the "Kirk-way." The waters, too, spreading once more over a wider space, and diminishing under an east wind, which had again arisen, no longer permitted their progress, so that very soon the whole armada was stranded anew. The, waters fell to the depth of nine inches; while the vessels required eighteen and twenty. Day after day the fleet lay motionless upon. the shallow sea. Orange, rising from his sick bed as soon as he could stand, now came on board the fleet. His presence diffused universal joy; his words inspired his desponding army with fresh hope. He rebuked the impatient spirits who, weary of their compulsory idleness, had shown symptoms of ill-timed ferocity, and those eight hundred mad Zealanders, so frantic in their hatred to the foreigners, who had so long profaned their land, were as docile as children to the Prince. He reconnoitred the whole ground, and issued orders for the immediate destruction of the Kirkway, the last important barrier which separated the fleet from Leyden. Then, after a long conference with Admiral Boisot, he returned to Delft.