The two chums went about preparing to spend a night under the bright stars, with a readiness that told of long practice. Bob, of course, knew less than his companion about such things, but Frank had often accompanied the cowboys on his father's ranch on their expeditions, and had even spent nights in the company of old Hank, when off on a hunt for fresh meat; so that he knew pretty well what ought to be done to add to their comfort.

It pleased him to show Bob some of the things he had learned. There might be no real reason why he should start a cooking fire in a hole he dug, rather than make a roaring blaze that could be seen a mile away; but Bob was tremendously interested, and would never forget all that he learned.

"Besides," Frank explained, after he had the small fire started, "it is easier for cooking, once you get a bed of red ashes; because in this warm country a fellow doesn't much like to get all heated up, standing over a big blaze."

Bob had, meanwhile, opened some of the bundles. One of these contained a small coffee pot, as well as the frying pan without which camping would be a failure in the minds of most Western boys.

"Look out for rattlers," advised Frank, as his chum went to the spring hole to fill the coffee pot. "They often come to such places in dry season We haven't had rain for so long now, that, when it does come, I expect a regular cloud-burst. That's often the way in this queer country, along the foothills of the Rockies."

Hardly had he spoken than there sounded a sudden and angry whirr, similar to the noise made by a locust, and which Frank knew only too well meant a rattlesnake!

CHAPTER V

THE VOICE OF THE MOUNTAIN

"Hey! take care there, Bob!" shouted Frank, starting up from beside his little cooking fire in something of a panic; for that alarm signal is apt to send the blood bounding through the veins like mad, whenever heard.