They rode back, met the advancing line of wagons, and told what they had seen, to which the men themselves, as they came to the edge of the prairie, were able to bear witness. Yet they were not greatly impressed. Those who believed that it meant a challenge gayly accepted it as Breakstone had predicted.
"Let the Comanches attack, if they will," they said, shaking their rifles. Even the face of the quiet Middleton kindled.
"It's a good spirit our men show," he said to the three who were his chosen comrades, "but I knew that they would never turn back because of an Indian threat."
The train advanced slowly down into the plain, and then began its march across the vast, grayish-green expanse. The traveling was very easy here, and they made seven or eight miles over the rolling earth before they stopped at sunset. Phil, looking back, could still see the dark line of the hilly country and the forest, but before him the prairie rolled away, more than ever, as the twilight came, like an unknown sea.
The camp was beside a shallow stream running between low banks. They built their fires of cottonwood and stunted oaks that grew on either side, and then Phil saw the darkness suddenly fall like the fall of a great blanket over the plains. With the night came a low, moaning sound which Bill Breakstone told him was merely the wind blowing a thousand miles without a break.
Phil took his turn at guard duty the latter half of that night, walking about at some distance from the camp, now and then meeting his comrades on the same duty, and exchanging a word or two. It was very dark, and the other sentinels were not in the best of humor, thinking there was little need for such a watch, and Phil by and by confined himself strictly to his own territory.
Although his eyes grew used to the darkness, it was so heavy that they could not penetrate it far, and he extended his beat a little farther from the camp. He thought once that he heard a light sound, as of footsteps, perhaps those of a horse, and in order to be certain, remembering an old method, he lay down and put his ear to the ground. Then he was quite sure that he heard a sound very much like the tread of hoofs, but in a moment or two it ceased. He rose, shaking his head doubtfully, and advanced a little farther. He neither saw nor heard anything more, and he became convinced that the footsteps had been those of some wild animal. Perhaps a lone buffalo, an outlaw from the herd, had been wandering about, and had turned away when the human odor met his nostrils.
He returned toward the camp, and something cold passed his face. There was a slight whistling sound directly in his ear, and he sprang to one side, as if he had narrowly missed the fangs of a rattlesnake. He heard almost in the same instant a slight, thudding sound directly in front of him, and he knew instinctively what had made it. He ran forward, and there was an arrow sticking half its length in the ground. The impulse of caution succeeded that of curiosity. Remembering Bill Breakstone's teachings, he threw himself flat upon the ground, letting his figure blend with the darkness, and lay there, perfectly still. But no other arrow came. Nothing stirred. He could not make out among the shadows anything that resembled a human figure, although his eyes were good and were now trained to the work of a sentinel. Once when he put his ear to the earth he thought he heard the faint beat of retreating hoofs, but the sound was so brief and so far away that he was not sure.
Phil felt shivers, more after he lay down than when the arrow passed his cheek. It was the first time that a deadly weapon or missile had passed so close to him, fired perhaps with the intent of slaying him, and no boy could pass through such an experience without quivers and an icy feeling along the spine.
But when he lay still awhile and could not detect the presence of any enemy, he rose and examined the arrow again. There was enough light for him to see that the feathered shaft was exactly like that of the arrow they had found in the tree.