At a late hour the two men stretched themselves upon the ground, with their blankets gathered about them, and they were soon wrapped in profound slumber, while Johnny, filled with the importance and responsibility of his duty, felt as though he should never need another hour's sleep. He was sure of being able to keep up an unintermitting watch several days and nights, should it become necessary.
Following the usual custom of sentinels, he shouldered his gun and paced back and forth before the smoldering camp-fire, glancing in every direction, so as to make sure that no enemy stole upon him unawares.
It formed a curious picture, the small fire burning in the valley, motionless forms stretched out before it, the huge steam man silent and grim standing near, the dwarfed boy, pacing slowly back and forth, and, above all, the moon shining down upon the silent prairie. The moon was quite faint, so that only an indistinct view of objects could be seen. Occasionally Johnny clambered up the bank and took a survey of the surrounding plains; bat seeing nothing at all suspicious, he soon grew weary of this, and confined his walks to the immediate vicinity of the camp-fire, passing back and forth between the narrow breadth of the valley.
As the hours dragged slowly by, the boy gradually fell into a reverie, which made him almost unconscious of external things. And it was while walking thus that he did not observe a large wolf advance to the edge of the gully, look down, and then whisk back out of sight before the sentinel wheeled in his walk and faced him.
Three separate times was this repeated, the wolf looking down in such an earnest, searching way that it certainly would have excited the remark and curiosity of any one observing it. The third glance apparently satisfied the wolf; for it lasted for a few seconds, when he withdrew, and lumbered away at an awkward rate, until a rod or two had been passed, when the supposed wolf suddenly rose on its hind legs, the skin and head were shifted to the arms of the Indian, and he continued on at a leisurely gait until he joined fully fifty comrades, who were huddled together in a grove, several hundred yards away.
In the meantime young Brainerd, with his rifle slung over his shoulder, was pacing back and forth in the same deliberate manner, his mind busily engaged on an 'improvement' upon the steam man, by which he was to walk backward as well as forward, although he couldn't satisfactorily determine how he was to go up and down hill with safety.
Still occupied in the study of the subject, he took a seat by the half-extinguished camp-fire and gazed dreamily into the embers. It had been a habit with him, when at home, to sit thus for hours, on the long winter evenings, while his mind was so busily at work that he was totally oblivious to whatever was passing around him.
It must have been that the boy seated himself without any thought of the inevitable result of doing so; for none knew better than he that such a thing was fatal to the faithful performance of a sentinel's duty: and the thought that his three companions, in one sense, had put their safety in his hands, would have prevented anything like a forgetfulness of duty.
Be that as it may, the boy had sat thus less than half an hour when a drowsiness began stealing over him. Once he raised his head and fancied he saw a large wolf glaring down upon him from the bank above, but the head was withdrawn so quickly that he was sure it was only a phantom of his brain.
So he did not rise from his seat, but sitting still he gradually sunk lower, until in a short time he was sleeping as soundly as either of the three around him.