herd. The grazing range of the cattle covered practically the entire valley.
The stirring of the herd had grown apace and even in the thicker darkness the girls realized that most of the beasts were in motion. Now and then a cow lowed; steers snorted and clashed horns with neighboring beeves. The restlessness of the beasts was entirely different from those motions of a grazing herd by day.
Something seemed about to happen. Nature, as well as the beasts, seemed to wait in expectation of some startling change. Ruth could not fail to be strongly impressed by this inexplicable feeling.
"Something's going to happen, Nita. I feel it," she declared.
"Hark! what's that?" demanded her companion, whose ears were the sharper.
A mutter of sound in the distance made Ruth suggest: "Thunder?"
"No, no!" exclaimed Jane Ann.
Swiftly the sound approached. The patter of ponies' hoofs—a crowd of horses were evidently charging out of a nearby coulie into the open plain.
"Wild horses!" gasped Jane Ann.
But even as she spoke an eyrie, soul-wracking chorus of shrieks broke the oppressive stillness of the night. Such frightful yells Ruth had never
