Buck leant over his horse's withers as the laboring creature clawed tenaciously up the face of the rugged hill. His whole poise was that of sympathetic straining. Nor were his eyes a whit less eager than those of the faithful animal under him.
He was making the last twenty yards of the climb up Devil's Hill from the side on which lay the new home adopted by the Padre and himself. Hitherto this point of approach had been accepted as inaccessible for a horseman, nor, until now, had Buck seen reason to dispute the verdict. But, to-day, a sudden impulse had constrained him to make the attempt, not from any vainglorious reason, or from the recklessness which was so much a part of his nature, but simply that somewhere high up on the great table-land at the summit of the hill he hoped to find an answer to a riddle that was sorely puzzling him.
It had been a great struggle even on the lower and more gradual slopes, for the basaltic rocks were barren, and broken, and slippery. There was no gripping soil, or natural foothold. Just the weather-worn rocks which offered no grip to Cæsar's metal-shod hoofs. Yet the generous-hearted beast had floundered on up to the last stretch, where the hill rose abruptly at a perilous angle.
It was a terrible scramble. As he looked above, at the point where the sky-line was cut by the broken rocks, even the reckless heart of the man quailed. Yet there was no turning back. To do so meant certain disaster. No horse, however sure-footed, could ever hope to make the descent by the way they had come. Buck had looked back just for one brief second, but his eyes had instantly turned again for relief to the heights above. Disaster lay behind him. To go on--well, if he failed to reach the brow of the blackened hill it would mean disaster anyway. And a smile of utter recklessness slowly lit his face.
So, with set jaws and straining body, he urged Cæsar to a last supreme effort, and the great black creature responded gallantly. With head low to the ground, his muscles standing out like ropes upon his shoulders, his forelegs bent like grappling-hooks, his quarters tucked beneath him, he put his giant heart into the work. Step by step, inch by inch he gained, yawing and sliding, stumbling and floundering, making way where all way seemed impossible. Slowly they crept up, slowly, slowly they neared that coveted line. Buck was breathing hard. Cæsar was blowing and had thrown his mouth agape, a sign that beyond this he could make no further effort. Five yards--two yards. The jagged line seemed to come down to meet them. At last, with a final spring, the great horse trampled it under foot.