The boys fully expected to get to the top well before noon, but the trail was circuitous and presented accumulating difficulties as they went upward, and finally the ponies and they, themselves, were so tired that they halted at noon, still several miles from the top, and ate their lunch, giving the animals a breathing spell and a chance to crop what scanty herbage there was.

The remainder of the trip was worse than the first part as regarded going, and the sun was hiding behind a big bank of gorgeously colored clouds when they topped the last rise and reached the summit. They found themselves on a wide, level stretch of rich land, extending for miles, and parallel to the next mountain range, there being a valley between. But the boys could not see into this yet, as night was coming on and the shadows lay deep in the valley.

“Can’t do any exploring to-night,” decided Jerry. “We’d better make camp at once and turn in, so as to be up early. Then we can put in a full day.”

“Good idea!” exclaimed Bob. “I’ll get a fire going right away. I brought along some bacon and eggs.”

“Good old scout!” yelled Ned.

The tent was soon erected, the fire was merrily burning, the horses eagerly cropping the sweet grass, and the aromatic smell of bacon and coffee filled the air.

“I’ll sleep like a top to-night,” declared Jerry as he and the others wrapped themselves up in their blankets a little later and went into the tent.

“I’ll sleep like two,” said Bob.

“No wonder—you ate so much!” joked Ned.

Probably their sound slumber accounted for the fact that the boys did not hear Professor Snodgrass leave the tent. And then he had told them he intended to get up in the night and go out with a lantern to hunt for moths that would be attracted by the light. In accordance with this plan they had given him an outside place so he would not disturb them.