"Yes. Come on out. Do you hear that funny noise?"

"Yes. What is it? I can't come out. I'm not dressed."

"Well, get dressed," he said, chuckling. "I want to know what
that--There! Hear it again?"

The high whistling sound rose once more. It seemed to be coming
nearer, and was from the north, the direction of the hills.

"Isn't it funny?" gasped Nan. "Shall I ask Rhoda?"

"Come on out and we'll ask one of the men if he knows what it is.
That horse wrangler is up. I just saw him going toward the pony
corral."

"Hesitation Kane? Well, we'll never learn if we ask him," giggled
Nan. "Wait, Walter. I'll come right out."

She went softly back to her cot and sat down on it to draw on her
stockings. She dressed as quickly and as quietly as possible. Even
Rhoda did not awake, and, knowing that all her girl friends were
probably just as tired and stiff as she was, Nan got out of the
tent without disturbing them in the slightest.

"Oh, Walter!" she murmured, seizing his hand in the dusk, "how
strange everything seems. Such a wilderness! And I haven't washed
my face."

"Come on down to the brook," said her boy friend. "They call it a