"Not a bad substitute!" exclaimed Ned.

The second line of twelve columns had similar rings of silver, as the boys discovered in good time. The movable contents of the room were not easily examined, as each object on the floor was buried under a mound of heavy, suffocating dust. Bats had made the place an undisturbed refuge, and the repulsive flutter of these creatures was disconcerting.

A preliminary examination of the four lateral passages and the rooms at their far end showed that these were probably store rooms, excepting the one on the east side. Here, on shelves, fixed on columns or posts similar to the colored supports in the principal chamber, were eight oblong forms. Even the dust and refuse could not disguise the nature of these—they were unmistakably mummies, the embalmed bodies of either chiefs or priests. At the head and foot of each were various dust covered receptacles and utensils.

The afternoon was too short for the boys to accomplish the removal of anything.

"I feel like a grave robber," panted Alan, soberly, as the two boys clambered out into the fresh air, finding, to their surprise, that it was already night.

"Well, I don't," said Ned. "These things are so old that they seem to belong to Time itself. I feel more like a gold miner who has at last struck a rich vein—and it's our vein."

But, as so often happens, ill luck came close on good fortune. The first glance of the young aeronauts at the camp and the Cibola was enough to chill their new happiness. The big gas bag had settled so low that it half concealed the car, which was resting flat on the ground. The buoyancy of the air ship was gone. Without more gas the Cibola could not make another flight. It was a severe blow to Ned and Alan; but they met the issue squarely.

"There is no use in worrying," said Ned, finally, when they realized the exact situation, "and we've got to make the best of it. Besides," he said, laughing, "we are not ready to go."

"That's right," replied Alan, thinking of the yet unexamined contents of the Treasure Temple, "and when we are ready I guess we'll be no worse off than Bob and Elmer. I suppose we can manage the one hundred foot descent some way."

Ned pointed to the hundreds of yards of net cordage.