"There!" exclaimed Zatsvilikhovski.

"Oh, they know nothing of military art!" said Zagloba.

Old Zatsvilikhovski was right. Hmelnitski had began a regular siege. He had closed all roads and escapes, had taken away the pasture, made approaches and breastworks, had dug zigzags near the camp, but had not abandoned assaults. He had resolved to give no rest to the besieged; to harass, to frighten, to keep them in continual sleeplessness, and press upon them till their arms should fall from their stiffened hands. In the evening, therefore, he struck upon the quarters of Vishnyevetski, with no better result than the day before, especially since the Cossacks did not advance with such alacrity. Next day firing did not cease for an instant. The zigzags were already so near that musketry fire reached the ramparts; the earthworks smoked like little volcanoes from morning till evening. It was not a general battle, but a continual fusillade. The besieged rushed out sometimes from the ramparts; then sabres, flails, scythes, and lances met in the conflict. But scarcely had a few Cossacks fallen in the ranks, when the gaps were immediately filled with new men. The soldiers had no rest for even a moment during the whole day; and when the desired sunset came, a new general assault was begun. A sally was not to be thought of.

On the night of the 16th of July two valiant colonels--Gladki and Nebaba--struck upon the quarters of the prince, and suffered a terrible defeat. Three thousand of the best Cossacks lay on the field; the rest, pursued by Sobieski, escaped to the tabor, throwing down their arms and powder-horns. An equally unfortunate result met Fedorenko, who, taking advantage of the thick fog, barely failed to capture the town at daybreak. Pan Korf repulsed him at the head of the Germans; then Sobieski and Konyetspolski cut the fugitives almost to pieces.

But this was nothing in comparison with the awful attack of July 19. On the previous night the Cossacks had raised in front of Vishnyevetski's quarters a lofty embankment, from which guns of large calibre vomited an uninterrupted fire. When the day had closed, and the first stars were in the sky, tens of thousands of men rushed to the attack. At the same time appeared some scores of terrible machines, like towers, which rolled slowly to the intrenchment. At their sides rose bridges, like monstrous wings, which were to be thrown over the ditches; and their tops were smoking, blazing, and roaring with discharges of small cannon, guns, and muskets. These towers moved on among the swarm of heads like giant commanders,--now reddening in the fire of guns, now disappearing in smoke and darkness.

The soldiers pointed them out to one another from a distance, whispering: "Those are the 'travelling towers.' We are the men that Hmelnitski is going to grind with those windmills."

"See how they roll, with a noise like thunder!"

"At them from the cannon! At them from the cannon!" cried some.

In fact the prince's gunners sent ball after ball, bomb after bomb, at those terrible machines; but since they were visible only when the discharges lighted the darkness, the balls missed them most of the time.

Meanwhile the dense mass of Cossacks drew nearer and nearer, like a black wave flowing in the night from the distant expanse of the sea.