A moment later John burst forth. His face was ashen and his eyes bulged wide with fear. His hands shook as if he had the ague and his breath was almost gone.

“What is it, John?” demanded Grant in alarm, while Fred and George also crowded around the frightened boy. He had evidently received a terrible shock of some kind and his three companions were greatly affected by his appearance.

“What’s the matter?” exclaimed Grant anxiously, but all that John could do was to mumble incoherently and point towards the interior of the cave.


CHAPTER XIV
AN ODD DISCOVERY

“John!” begged Grant. “Tell us what’s the matter.”

John, however, was in no condition to say anything. He shivered and shook, and kept glancing fearfully at the entrance to the cave as though he expected some great ogre or dragon to emerge any moment.

“Watch that cave, Pop,” directed Grant. “Perhaps we’d better get out of here.”

“Can’t you talk, John?” exclaimed Fred. “Tell us what the trouble is.”

John gulped and swallowed hard a couple of times. He pointed towards the cave and his lips moved, but no sound that resembled a word came from his ashen-colored lips.