material in the construction of buildings or objects of use. Instead, the gold seemed to be brought into play to beautify the city. An artistic scheme was carried out, and while it was true that in many buildings common objects were made of gold, yet each one was beautiful in itself.
"What a wonderful place this must have been when it was lighted up," spoke Tom.
"Do you think it was ever lighted up?" asked his chum.
"It must have been," declared the young inventor. "My idea is that this city was the home of the priests of the temple, and their friends. I don't believe the common people ever came here. Perhaps the officers of the army, the rulers and the royal family were admitted, but not the ordinary people. That's why it's so far underground, and so well guarded by the river.
"Probably the priests and others collected so much gold they didn't know what to do with it, and built this city to use it up, and, at the same time have a safe place to store it. And they must have had some means of lighting the place, for they couldn't go about in darkness—they couldn't have seen the gold if they did. Yes, this must have been wonderfully beautiful then. The priests probably came here to study, or perhaps
