“There goes the other mule!” yelled Walter Perkins.

“Fat boy him go, too,” grunted Anvik.

They had failed to observe Stacy. What they were most interested in was the sight of their pack mule sliding down the slope backwards in a sitting posture. Alarmed as they were to see their stores disappearing, the ludicrousness of the sight interested them. The mule came in contact with one of the high places–a rocky bump, which bounced him up into the air and turned him completely around. Down to the next obstruction the animal traveled, principally on its nose.

Stacy Brown was only a few seconds behind the mule. The two had sat down facing each other. The mule being the heavier had gone first and, when once under way, his momentum carried him along with greater force and speed.

With a wild yell, the fat boy, sprawling and 155struggling to catch hold of something to stop his progress, began the descent. Below him he could hear the rattle of tin cans, for the pack had broken open. It was raining canned goods down there, but Stacy was not particularly interested in this phase of the situation. He hit the bump over which the pack mule had leaped, was hurled up into the air, where he did a dizzy spin, then sat down with a force that for the instant knocked all the breath out of him, and once more he shot towards the bottom.

“They’ll both be killed!” cried the Professor in great alarm.

Tad, comprehending the scene in a twinkling, started on a run. Choosing a point where there were no bumps in the way, he crept over and, sitting on his feet, supported on each side by his hands, began a downward shoot. But the freckle-faced boy did not long maintain that position. A few seconds after starting he was flat on his back, going down feet first at a speed that fairly took his breath away.

Ere he was half-way down, the mule had reached the end of its journey at the bottom of the slope. Then Stacy Brown came along, but not much more gracefully than the mule, and landed feet first on the animal. What the slide and the bumps had failed to do for the unfortunate beast, Stacy Brown did. He was a 156human projectile and the mule, that had got to its fore feet, promptly lay down again under the impact. Chunky did a graceful dive over the body of his prostrate enemy, landing on his shoulders in a thicket.

“Stacy! Stacy!” yelled Tad as he reached the end of his own slide and got to his feet. Tad had not been in the least injured by the fall. “Stacy!”

“What do you want?”