As the sun rose and the day became warm, their breathing grew quicker; and the sweat rolled off their faces as they ran across the rough prairie sward, up and down the long inclines, now and then shifting their heavy rifles from one shoulder to the other.

But they were in good training, and they did not have to halt.

At last they reached stretches of bare ground, sun-baked and grassless, where the trail grew dim; and here they had to go very slowly, carefully examining the faint dents and marks made in the soil by the heavy hoofs, and unravelling the trail from the mass of old footmarks.

It was tedious work, but it enabled them to completely recover their breath by the time that they again struck the grassland; and but a few hundred yards from the edge, in a slight hollow, they saw the four buffaloes just entering a herd of fifty or sixty that were scattered out grazing.

The herd paid no attention to the new-comers, and these immediately began to feed greedily.