And to his great delight, when he had sauntered, as casually as he could make it, to an observation point, what he saw made him gasp for breath.

For, grouped closely together, below him, on a sort of big table of rock, were a number of the Yaquis. They appeared to be holding a sort of council or parley, and were gathered about an Indian to whom Mike and Paz often delegated certain duties.

But this was not what caused the heart of Floyd to thump so desperately against his ribs, making such a noise, he wildly feared, that the pounding would be heard by some passing Indian.

What caused him fairly to gasp for breath was the sight of a great boulder, poised on the edge of the natural wall, and hanging almost directly over the group of talking Indians.

"If I can push that rock down on them it will do the trick!" thought Floyd. "It'll put some of 'em out of business, and the rest will be so frightened that they'll retreat. Then whoever is out there trying to break through to help us, will have matters their own way. That's what I'll do. Ill pry that rock loose and let it dash 'em on the heads."

It was a horrible thing to think of, much more horrible to do, but the situation of Rosemary and Floyd was desperate indeed. The end seemed to justify the means.

"The point is," mused Floyd, "can I shove that rock down?"

Looking about him he saw that he was not observed. He quickly made his way nearer to the rock, and then, reaching out his hands, he pushed.

Gently at first he exerted the pressure, and then putting more power into the shove he thrust with all his might.

"It's giving! It's giving!" thought Floyd, with a desperate catch of his breath. "I can shove it down on 'em and dash 'em all up!"