"Something's going wrong," one of them muttered.

"Get moving!" Craig barked. He knew too well that something was going wrong. And, as they shoved the boat through the swamp, the guns from the ship began to sound slower and slower until at last only occasional blasts showed they were still being manned.

Then the gun-fire ceased altogether.

"Perhaps we have driven them off," Michaelson suggested.

"Perhaps we haven't!" Craig answered bitterly. "Look."

They were nearing the river. Through open spaces, the harbor was visible. They caught a glimpse of the Idaho.

The planes of the Ogrum were still circling above it.

The Ogrum had not been driven off.

They had won a victory!