There was a mutter of thunder and a far-off roar, a flame of lightning through the trees, and the hills and mountains shook. Just where they rode the cañon narrowed to hardly more than a deep gulch, and the river ran close beside the road.
"We must get out of this," Cairness started to say, urging his little bronco; but even as he spoke there was a murmur, a rustle, a hissing roar, and the rain fell in one solid sheet, blinding them, beating them down.
"Take care!" yelled Cairness, as Felipa, dazed and without breath, headed straight for the stream. He bent and snatched at her bridle, and, swerving, started up the sheer side of the hill. She clung to the mane instinctively, but her horse stumbled, struggled, slipped, and scrambled. She had lost all control of it, and the earth and stones gave way beneath its hoofs just as a great wall of water bore down the bed of the river, sweeping trees and rocks away, and making the ground quiver.
"Let go your stirrup!" cried Cairness, in her ear; and as she kicked her foot loose, he leaned far from the saddle and threw his arm around her, swinging her up in front of him across the McLellan pommel, and driving the spurs into his horse's belly. It had the advantage of her horse in that it was an Indian animal, sure of foot as a burro, and much quicker. With one dash it was up the hillside, while the other rolled over and over, down into the torrent of the cloud burst.
Cairness slid to the ground, still holding her close, and set her upon her feet at once. He had not so much as tightened the grasp of his arm about her, nor held her one-half second longer than there was absolute need.
He tried to see if the soldiers were safe, but though they were not a hundred feet away, the trunks and the mist of water hid them. The rain still pounded down, but the rush of the wind was lessening sensibly.
Felipa leaned against the tree under which they were, fairly protected from the worst of the storm; and Cairness stood beside her, holding his winded horse. There was nothing to be said that could be said. She had lost for once her baffling control of the commonplace in speech, and so they stood watching the rain beat through the wilderness, and were silent.
When the storm had fairly passed, they found Felipa's gray lodged in the root of a tree some distance down the creek; in no way hurt, oddly enough, but trembling and badly frightened. The saddle, even, was uninjured, though the pigskin was water-soaked and slippery.
Cairness sent one of the soldiers back to report their safety to Landor, and they mounted and hurried on again, swimming the river twice, and reaching the post some time after noon.