"Perhaps it am de tide, de sea making into de river," suddenly suggested the Chinaman in tones of alarm. "If so, we better row, massa, for de bore am terrible, and would fill dis boat to de top. Yes, Li have listened, and he not like de sound. Row, massa, or we be drowned."

That Li Sung was alarmed there could be no doubt, for he had spent some time on the river in the service of the men of Paddi, and he well knew of the danger of the bore caused by the tide as it swept into the upper reaches. Indeed, at any other time he would have thought of the matter and would have warned his young master; but the fact that they were on a spying expedition, and that all their energies were devoted to keeping watch for the enemy, had caused him to forget it. Now, however, as the sound swept with great rapidity towards them, he recognized the meaning of that ominous hissing, and, turning swiftly to Tyler, urged him to row for his life. Plunging paddles into the water the two strained at their work, in the desperate attempt to reach the bank before the tide overwhelmed them. But they were too late to escape, and hardly had they gained more than twenty yards when the full strength of the bore rushed upon them. In the gathering light each saw a moving wall of water, some five feet in height, rushing towards them, and though at a shout from Tyler the bows of the craft were swept round to meet it, in the hope of riding over it, the oncoming water seized them in its powerful grasp, swung the boat round as if it had been a top, and then washed clean over it, upsetting it and turning it bottom upwards. As for the two occupants, they were torn from their seats, and carried on with the flood for some feet. A minute later they appeared upon the surface, swimming for their lives.

"Make for the boat," shouted Tyler, striking out in that direction. "The bore has passed now, and the water is smooth; but the tide runs strong, and we must have support."

Without wasting further breath he swam lustily in the direction of the overturned boat, and very soon reached it. In an instant he had slipped the bag of ammunition from his shoulders, and had placed it on the flat bottom of the craft. The rifle followed, and then, conscious that he was now free to help, he turned to see how Li Sung was faring.

"He is drowning," he suddenly gasped, catching sight of the unfortunate Chinaman struggling in the water feebly, with head almost submerged, and a look of terror and despair on his face. "Hold on a little! Stick to it, Li, and I will be with you."

Without hesitation he relinquished his grasp of the upturned boat and struck out for the Chinaman. A moment or two and he was beside him, when he at once clasped him by the shoulders, and, putting out all his strength, turned the unfortunate man upon his back.

"Lie still and I will tow you to the boat," he shouted in his ear. "The rifle and ammunition are evidently too much for you. That's it. There is nothing to fear, and you will soon be safe."

Fortunately for our hero, Li Sung, though near to the point of sinking, had still retained consciousness, and as soon as he heard Tyler's voice, lay perfectly still on his back, not daring to struggle lest he should ruin his own chances as well as his master's. A moment later he felt himself being gently towed through the water, and at once instinct told him that he could help by kicking out with his legs.

"That's the way," sang out Tyler encouragingly, though in breathless tones. "Stick to the job and we shall be there very soon. Now, one moment while I turn you over, and there you are."

The whole incident had happened so quickly that when the two found themselves clinging to the boat, and staring at one another in the gathering light of another day, they could scarcely realize how they came to be there, nor the fact that the bore had caught them in its terrible embrace and had overwhelmed them. For several minutes they retained their hold, while they looked about them with anxious eyes and panted to regain their breath.