When Bob sailed away up the gorge, and as soon as the humming of his propeller could no longer be heard, Lawrence began to carry out his instructions for the night. He felt no little anxiety; indeed, it was a trying position for a lad who found himself, for the first time in his life, faced with difficulties and dangers for which he had had no preparation. But after all, it is character that tells. Lawrence was naturally cool and level-headed; he had been known at school as a "sticker" at cricket; he could wear out half-a-dozen bowlers. His school had taught him lessons of self-reliance, and though he had never been very enthusiastic in the cadet corps, he had won the mark of efficiency, could shoot straight, and had learnt to think quickly and act with promptitude. So, in spite of a natural nervousness, he saw quite clearly what he had to do, and had grit enough to make up his mind to do it. He stationed two men behind the rocks near the bridge head, ordering them to fire if they saw the least sign of an attempt to cross. They were to be relieved every two hours. Mindful of Bob’s advice, he determined to keep watch all night himself: there was no one to relieve him. Very soon, as night settled deep upon the valley, he began to feel the cold, and thought regretfully of the thick coat lying on his seat in the aeroplane. After the fatigues and wearing anxieties of the day he was not in a condition to face the added strain of a long vigil in the freezing air. He had great difficulty in keeping awake, and when one of the Pathans lent him a saddle cloth in which to wrap himself, he soon discarded it, lest the deceitful warmth should overcome his watchfulness. He dared not move about, but sat crouched on the ground beside the Pathans with his rifle across his knees, listening for any sign of the approach of the enemy. More than once he had to stir up his companions when they dozed, until he grew tired of it; he would rely on himself, and wake them at the first threatening of danger. But he found it increasingly difficult to resist the soporific influence of the cold, and of the monotonous lullaby sung by the river as it flowed past at the foot of the shelving bank beneath him. Every now and then he got up, stretched himself, and sat down again, not venturing even to slap himself with his arms for fear of putting the enemy on the alert. He gazed up into the sky, and tried to count and to identify the stars, which, in this deep valley, appeared to him, he thought, as they would appear to an observer at the bottom of a well. From time to time he exchanged a few whispered words with his companions, until this resource failed him through their slumberousness. When, at the end of the first two hours, the men were relieved, the circumstances of the change had the effect of rousing him a little; but the second pair were even more sleepy than the first, and he lacked the energy to be continually prodding them.