the blistering volcanic
heat_."

Marcel started up from his chair with an excited cry.

"You're right, Uncle," he cried, completely carried away. "But where?
Where's this place? This old hill? I've seen it? Where?"

"It's north, boy. Away north. God knows how far."

Steve's voice had lost something of its note of inspiration before the
hard facts which Marcel's question had brought home to him. He paused
for a moment with his eyes hidden. Then, with a curious movement which
suggested the determined squaring of his shoulders, he broke out again.

"Yes. It's miles--maybe hundreds of miles away north. It's somewhere in
the heart of Unaga. Some place explorers never hit. It's the great Spire
of Unaga. The unquenchable Fires of Unaga. It's a living volcano that
sets all other volcanoes looking like two cents. I've seen it twice--in
the far-off distance. You've seen it once. The boys have seen it, too.
It looked like a pillar propping up the roof of the heavens. A pillar of
fire. It set me nigh crazy with wonder. And it scared the boys to death.
They guessed it was the breeding ground of all evil spirits. But it's
there, and it grows our stuff. And I'm going right out after it."

"Yes!"

Marcel dropped back into his chair. His exclamation was a vent to the
emotions which the force of Steve's words had stirred.

"Yes. Sure," he added a moment later. "We'll go right out after it."

"We?"

Steve looked up with a start.

The boy's excitement had passed. He regarded his foster-father with a
pair of challenging, smiling eyes that were full of humour. But the
challenge was definite. He re-lit his pipe.

"Why, yes, Uncle," he said promptly. "We'll go. That's how you said. I'm
all in on this. I'm crazy to see all that wonderland can show me. It
doesn't scare me a thing. You see, it's a winter trail. I guess I know
the summer trail so I won't forget it. The winter trail's new and I'm
crazy for it. You'll need us all on this thing. I----"

Steve shook his head. Marcel broke off at the sign, and the smile passed
out of his searching eyes as he sought to read what lay behind that
silent negative.

"You mean--?" he went on, a moment later, a flush mounting to his cheeks
and suggesting a sudden stirring of passionate protest.

"I don't mean a thing but that you can come right along if you think
that way."

The smile that accompanied Steve's words was gently disarming. There was
no equivocation. It was impossible for the