Upon the same day they received a letter from the prince, assuring them that the dykes were all pierced and the water rising upon the great dyke that separated the city from the sea. The letter was read publicly in the marketplace, and excited the liveliest joy among the inhabitants. Bands of music played in the streets, and salvos of cannon were fired. The Spaniards became uneasy at seeing the country beyond them gradually becoming covered with water, and consulted the country people and the royalists in their camp, all of whom assured them that the enterprise of the prince was an impossibility, and that the water would never reach the walls.

The hopes of the besieged fell again, however, as day after day passed without change; and it was not until the 1st of September, when the prince began to recover from his fever, and was personally able to superintend the operations, that these began in earnest. The distance from Leyden to the outer dyke was fifteen miles; ten of these were already flooded, and the flotilla, which consisted of more than 200 vessels, manned in all with 2500 veterans, including 800 of the wild sea beggars of Zeeland, renowned as much for their ferocity as for nautical skill, started on their way, and reached without difficulty the great dyke called the Land Scheiding. Between this town and Leyden were several other dykes, all of which would have to be taken. All these, besides the 62 forts, were defended by the Spanish troops, four times the number of the relieving force.

Ned had been in close attendance upon the prince during his illness, and when the fleet was ready to start requested that he might be allowed to accompany it. This the prince at once granted, and introduced him to Admiral Boisot.

"I shall be glad if you will take Captain Martin in your own ship," he said. "Young as he is he has seen much service, and is full of resource and invention. You will, I am sure, find him of use; and he can act as messenger to convey your orders from ship to ship."

The prince had given orders that the Land Scheiding, whose top was still a foot and a half above water, should be taken possession of at all hazard, and this was accomplished by surprise on the night of the 10th. The Spaniards stationed there were either killed or driven off, and the Dutch fortified themselves upon it. At daybreak the Spaniards stationed in two large villages close by advanced to recover the important position, but the Dutch, fighting desperately, drove them back with the loss of some hundreds of men. The dyke was at once cut through and the fleet sailed through the gap.

The admiral had believed that the Land Scheiding once cut, the water would flood the country as far as Leyden, but another dyke, the Greenway, rose a foot above water three- quarters of a mile inside the Land Scheiding. As soon as the water had risen over the land sufficiently to float the ships, the fleet advanced, seized the Greenway, and cut it. But as the water extended in all directions, it grew also shallower, and the admiral found that the only way by which he could advance was by a deep canal leading to a large mere called the Fresh Water Lake.

This canal was crossed by a bridge, and its sides were occupied by 3000 Spanish soldiers. Boisot endeavoured to force the way but found it impossible to do so, and was obliged to withdraw. He was now almost despairing. He had accomplished but two miles, the water was sinking rather than rising owing to a long continued east wind, and many of his ships were already aground. On the 18th, however, the wind shifted to the northwest, and for three days blew a gale. The water rose rapidly, and at the end of the second day the ships were all afloat again.

Hearing from a peasant of a comparatively low dyke between two villages Boisot at once sailed in that direction. There was a strong Spanish force stationed here; but these were seized with a panic and fled, their courage unhinged by the constantly rising waters, the appearance of the numerous fleet, and their knowledge of the reckless daring of the wild sailors. The dyke was cut, the two villages with their fortifications burned, and the fleet moved on to North Aa. The enemy abandoned this position also, and fled to Zoetermeer, a strongly fortified village a mile and a quarter from the city walls. Gradually the Spanish army had been concentrated round the city as the water drove them back, and they were principally stationed at this village and the two strong forts of Lammen and Leyderdorp, each within a few hundred yards of the town.

At the last named post Valdez had his headquarters, and Colonel Borgia commanded at Lammen. The fleet was delayed at North Aa by another dyke, called the Kirkway. The waters, too, spreading again over a wider space, and diminished from the east wind again setting in, sank rapidly, and very soon the whole fleet was aground; for there were but nine inches of water, and they required twenty to float them. Day after day they lay motionless. The Prince of Orange, who had again been laid up with the fever, rose from his sickbed and visited the fleet. He encouraged the dispirited sailors, rebuked their impatience, and after reconnoitering the ground issued orders for immediate destruction of the Kirkway, and then returned to Delft.

All this time Leyden was suffering horribly. The burghers were aware that the fleet had set forth to their relief, but they knew better than those on board the obstacles that opposed its progress. The flames of the burning villages and the sound of artillery told them of its progress until it reached North Aa, then there was a long silence, and hope almost deserted them. They knew well that so long as the east wind continued to blow there could be no rise in the level of the water, and anxiously they looked from the walls and the old tower for signs of a change. They were literally starving, and their misery far exceeded even that of the citizens of Haarlem.