Before the interval had expired Jack had his glass to his eyes, and was studying the valley below.
As the antelope cropped the rich grass they occasionally took a step in the direction of the watcher; but the largest one, evidently the leader, changed his course so as to work back toward the little grove of trees, the others following.

Now and then the leader raised his head and looked around, as if suspecting danger, though his fears were not confirmed.

At longer intervals other members of the herd did the same, but it was evident that they neither saw nor scented anything amiss.
Jack's constant fear was that Fred would betray himself through some accident.

His course would bring him nearer the game and the risk was considerable; but as the minutes passed without anything of that nature taking place, his hope increased.
"More than likely Fred himself will get the shot instead of me.

It makes no difference, so that we don't lose our supper; for," he added, dismally, "the dinner is already gone." When another half-hour had passed, he was sure his chum was on the other side of the herd.
"There must be a break pretty soon.