“Great heavens!” thought Merriwell. “What is this I have run against? Is it a human gorilla?”

And then he found that the creature possessed marvelous strength, for Frank was literally lifted off his feet and flung prostrate, the other coming down upon him.

The fall came about so suddenly that Frank was dazed, and his breath was nearly knocked out of his body. For a moment he did nothing, and the creature scrambled up and grasped the fallen lad by the throat with hands that were like iron.

“Bother with me, will ye!” snarled that beastlike voice. “I’ll fix ye so ye won’t do it no more!”

Frank felt that he was in deadly peril, and that caused him to clutch the man’s wrists and hold fast.

He saw something uplifted, and he knew well enough that the furious creature had drawn a weapon of some sort.

“Look out!” panted the weak voice from close at hand. “He will kill you! He has a knife!”

Then, as Merriwell used all his strength to hold back that uplifted hand, he began to realize that, athlete though he was, he was no match for the person he had tackled.

The strength of those long arms was something wonderful, for little by little the man forced Frank’s hand back, and his knife approached the boy’s breast.

Merriwell felt that his power of resistance might give out suddenly at any instant, and then the blade would be driven to its hilt.