Again he seemed to hear Hardgrave running on in a low, melodious tone so suggestive of great secrets: “Three gods; a black one, a green one and one of pure gold.”

“Green—green jade,” he thought to himself. “That’s it, to be sure. The green god would be carved from jade.”

To the girl he said, “That’s a rare find. Ever see any like it before?”

“No, never.”

“We’d better go on. Ought not to get separated from the rest.”

As they hurried on, Johnny heard a slight movement among the palms to the right of him and for a second, above the tallest leaf, there flashed a gleaming blade.

“Did—did you see it?” the girl asked, gripping his arm.

Johnny nodded.

“Wha—what was it?”

“A spear point, I’d say.” He spoke as calmly as he could.