They were truly thankful now that the horses they rode were so large and powerful, evidently of American breed.

It was not difficult to increase the distance between them and the herd, and they hoped to slip away before they were seen by any of the Lipans.
But a sudden shout behind them, a long, piercing whoop showed that they had reckoned wrong.
The two looked back.

A group of warriors had gathered in advance of the band, and it was obvious, as they galloped on, that they had seen the two fugitives.

Two or three shook their long lances, and pointed them straight at Ned and Obed.

Then uttering that long, menacing whoop again, the group, about twenty in number, rode straight for the two, while the rest continued their work with the herd.
"It's a chase," said Obed.