He saw the cause of the terror that had smitten the herd.
Brown men, almost naked and on horseback, darted in and out among the buffaloes, shooting and stabbing.

They were muscular men, fierce of countenance, and their long black hair streamed out behind them.

Some carried rifles and muskets, and others carried lances and bows and arrows.
"Lipans," said Obed, "one of the fiercest of all the southwestern tribes.

They belong mostly across the Rio Grande, but I suppose they've come for the buffalo.

Ned, we're not wanted here." After the single look they were away toward the north, moving at a smooth and easy gallop.