"No!—dear, brave Philip—but only so thankful and happy for your escape." Yet, at the same moment the colour faded from her cheek, and even the sun-kissed line of her upper lip grew bloodless, as she leaned back against a tree.

But Philip did not see her. His eyes were rapidly taking in his strange surroundings. He was lying among the broken fragments of pine branches and the débris of the cliff above. In his ears was the sound of hurrying water, and before him, scarce a hundred feet, a rushing river! He looked up; the red glow of sunset was streaming through the broken limbs and shattered branches of the snow-thatched roof that he had broken through in his descent. Here and there along the river the same light was penetrating the interstices and openings of this strange vault that arched above this sunless stream.

He knew now whence the duck had flown! He knew now why he had not seen the watercourse before! He knew now where the birds and beasts had betaken themselves—why the woods and cañons were trackless! Here was at last the open road! He staggered to his feet with a cry of delight.

"Grace, we are saved."

Grace looked at him with eyes that perhaps spoke more eloquently of joy at his recovery than of comprehension of his delight.

"Look, Grace! this is Nature's own road—only a lane, perhaps—but a clue to our way out of this wilderness. As we descend the stream it will open into a broader valley."

"I know it," she said, simply.

Philip looked at her inquiringly.

"When I dragged you out of the way of the falling rocks and snow above, I had a glimpse of the valley you speak of. I saw it from there."

She pointed to a ledge of rock above the opening where the great stone that had fallen had lodged.