"Look! Oh, look!" he howled.
[CHAPTER XVI]
A MYSTERIOUS NIGHT PROWLER
Professor Zepplin, realizing that Ned Rector had made a discovery, began peering from one to the other of the pair who were indulging in such strange antics.
"Stop that nonsense, I say!" he commanded.
"I—I can't," yelled Stacy.
"Guide, come here! I demand that you cease this foolishness."
"Nassir, yassir."
Chops was willing to stop. He was willing to obey orders, and he did so as far as possible. The guide had started to walk toward the Professor when suddenly he was jerked prone on his face.
Professor Zepplin had observed something in the light of the campfire, however. He strode forward and threw himself upon the fallen Chops, to the great delight of the Pony Rider Boys.