He concluded that Nacaytzusle had shifted his position, by placing himself on Tyope's supposed line of retreat.

But it was also manifest that the boy had not come to the meeting alone,--that at least one more Navajo lurked in the vicinity.

At least one, perhaps more.
Another wolf now howled in the direction of the south.

A fourth one was heard farther off, and both voices united in a plaintive wail.

Any one unacquainted with the remarkable perfection with which the Navajos imitate the nocturnal chant of the so-called coyote, would have been deceived, and have taken the sounds for the voices of the animals themselves; but Tyope recognized them as signals through which four Navajo Indians prowling around him informed each other of their positions and movements.