"I don't bear the man any ill will," said he. "I'm just sort o' curious to know if he rose wi' the fortunes o' Wentworth City; that name must have stuck in his throat——"

"Why, hasn't you heard?" exclaimed Dick; "but, of course, you couldn't know. Macguire cleared out 'bout two days after you, an' every one fancied he meant to follow you up, because he thought you were goin' to some new strike. He had his old crowd wi' him, an' a black tracker. He has never come back yet. I reckon he must have gone under."

"Poor beggar!" murmured Bob. "I hope he manages to come out all right, but——" He shook his head doubtfully.

"If by any chance he does hit our old trail into the Never Never, he'll be mighty sorry for it afterwards," spoke Mackay, grimly, with visions of vengeful savages before his eyes.

That night Bob came into Mackay's room at the hotel where they were all staying.

"I wanted to see you alone," he said simply, "so that I might tell you how truly I have appreciated your great kindnesses. I know now who it was that sent that letter to my mother, you dear old humbug."

Mackay smiled. "My reward is more than I ever dreamed, my lad. You yourself have given me much by your friendship. I haven't been disappointed in you, Bob, an' I hope our partnership will no' finish here."

"I'll be with you every time," cried Bob, heartily.

"I don't know what it is, but you can count on me," came a well-known voice beyond the thin wooden partition, and immediately afterwards Jack burst into the room. "I thought I heard about another threatened expedition," he said eagerly, "and I wanted to sign my name to it right away."