“Stop!” he commanded harshly, himself wading to the idol’s side.

And Torres, at first looking on in puzzlement, saw what he had escaped. Several times Francis fired his pistol into the stone mouth, while the old priest moaned “Sacrilege!” Next, wrapping his coat around his arm and hand, he groped into the mouth and pulled out the wounded viper by the tail. With quick swings in the air he beat its head to a jelly against the goddess’ side.

Wrapping his hand and arm against the possibility of a second snake, Francis thrust his hand into the mouth and drew forth a piece of worked gold of the shape and size of the hole in Hzatzl’s ear. The old man pointed to the ear, and Francis inserted the key.

“Like a nickle-in-the-slot machine,” he remarked, as the key disappeared from sight. “Now what’s going to happen? Let’s watch for the water to drain suddenly away.”

But the great stream continued to spout unabated out of the hole. With an exclamation, Torres pointed to the wall, an apparently solid portion of which was slowly rising.

“The way out,” said Torres.

In, as the old man said,” Francis corrected. “Well, anyway, let’s start.”

All were through and well along the narrow passage beyond, when the old Maya, crying, “My son!” turned and ran back.

The section of wall was already descending into its original place, and the priest had to crouch low in order to pass it. A moment later, it stopped in its old position. So accurately was it contrived and fitted that it immediately shut off the stream of water which had been flowing out of the idol room.