“Be careful, Rob,” cried Mr Brazier. “See that there is no powder loose.”

“Be quick, my lad, or they’ll be on to us.”

Crack! went the match, and as it blazed up it was applied to one stuck upright in the top of the canister. This blazed in turn, and the flame flickered a little and threatened to go out as the nearly submerged tin glided away with the stream; but directly after the flame burned up steadily, and as Rob gave the word to row once more the dangerous contrivance was left behind. A minute later they had the satisfaction of seeing the canoes gather round the tiny light and their occupants cease rowing as they sat evidently wondering what was the meaning of the fire burning in the midst of the water—a perfect novelty to them.

“No go!” said Shaddy suddenly. “Match has gone out.”

“Burned out,” said Brazier.

“All the same, sir, and hasn’t started the touch-rag. Wish it had answered, because it was clever and would have given the beggars a good lesson not to meddle with respectable people. Here, we shall have to fire, sir. They’re coming on again.”

But they were not, for the whole fleet was gathered about the canister, which, unseen by the occupants of the boat, was emitting a sputtering little fire as the touch-rag burned slowly; and the wonder of this going on from a round, silvery-looking object just above the surface of the water kept the ignorant enemy at a respectable distance.

“Pull, my lads,” shouted Shaddy. “We may get into a better place if we reach the next rapid.”

As he spoke there was a deafening roar, a column of water rose in the air, and a dull concussion struck the boat, while a cloud of smoke hung over the group of canoes, and, lifting, showed half of them to be swamped, and dozens of the Indians swimming about trying to reach the boats which floated still.

As far as the little party could make out, no one had been hurt, but the consternation was terrible. No further efforts were made in pursuit, and for the next half-hour the boat was rowed on and reached the rapid before the enemy was seen again.