When she slipped a little from her place as he veered around a rock he did not slow up, as usual, that she might regain her seat, but switched his head back with a growl that warned her into position.

That surprise was hardly out of her mind when she saw a gay patch of wild-flowers a little from the line of his direction, and she tugged at his ear to swing him towards it.

A sharp jerk of his head tossed her hand aside, and again she caught the glint of wild eyes as he looked back at her.

Then she grew grave, puzzled.

She trusted Black Bart with all her heart, as only a child can trust dumb animals, but now she sensed a change in him.