"But I'm not going to give up!" cried Tom. "Our map may be wrong, and likely it is, but I'm sure we're near the spot, and I'm going to keep on. If we don't get some hint of it in a few days, though, I'll establish a camp, go up in the air and see what I can pick out from the balloon."

"That's the stuff!" cried Ned. "It will be a relief from these rough ox carts."

So for the next few days they doubled and redoubled on their trail, criss-crossing back and forth, ever hoping to get some trace of the temple, which was near the entrance to the city of gold. In all that time nothing was seen of the Fogers.

"We'll try the balloon to-morrow," decided Tom, as they went into camp one night after a weary day. Every one was tired enough to sleep soundly under the tents which were set up over the carts, in which beds were laid. It must have been about midnight when Tom, who felt a bit chilly (for the nights were cool in spite of the heat of the day), got up to look at the campfire. It was almost out so he went over to throw on some more logs.

As he did so he heard a noise as if something or somebody had leaped down out of a tree to the ground. A moment later, before he could toss on the sticks he had caught up, Tom was aware of two eyes of greenish brightness staring at him in the glow of the dying fire, and not ten feet away.

Chapter XV The Golden Image

For a moment the young inventor felt a cold chill run down his spine, and, while his hair did not actually "stand up" there was a queer sensation on his scalp as if the hairs wanted to stand on end, but couldn't quite manage it.

Involuntarily Tom started, and one of the sticks he held in his hand dropped to the ground. The green eyes shifted--they came nearer, and the lad heard a menacing growl. Then he knew it was some wild animal that had dropped down from a tree and was now confronting him, ready to spring on the instant.

Tom hardly knew what to do. He realized that if he moved it might precipitate an attack on him, and he found himself dimly wondering, as he stood there, what sort of an animal it was.