"Mukoki wants us!" Wabigoon sprang to his feet and emptied the five shots of his magazine into the air.
"Listen!" Hardly had the echoes died away when there came again the reports of Mukoki's rifle.
Without another word the two boys hurried to the canoe, which had not been unloaded.
"He's a couple of miles down-stream," said Wabi, as they shoved off.
"I wonder what's the matter ?" "I can make a pretty good guess," replied Rod, his voice trembling with a new excitement.

"He has found the second waterfall!" The thought gave fresh strength to their aching arms and the canoe sped swiftly down the stream.

Fifteen minutes later another shot signaled to them, this time not more than a quarter of a mile away, and Wabi responded to it with a loud shout.

Mukoki's voice floated back in an answering halloo, but before the young hunters came within sight of their comrade another sound reached their ears,--the muffled roar of a cataract! Again and again the boys sent their shouts of joy echoing through the night, and above the tumult of their own voices they heard the old warrior calling on them to put into shore.

Mukoki was waiting for them when they landed.
"This is big un!" he greeted.