"What is it?" asked the young inventor in a whisper.
"Some one is coming along the hall," replied Ned in a low voice.
They all listened intently. There was no doubt but that some one was approaching along the corridor leading to the library where the conference was being held.
"Oh, it's only Mrs. Baggert," remarked Tom a moment later, relief showing in his voice. "I know her step."
There was a tap on the door, and the housekeeper pushed it open, for it had been left ajar. She thrust her head in and remarked:
"I guess you've forgotten, Mr. Swift, that Andy Foger is waiting for you in the next room. He has a letter for you."
"Andy Foger!" gasped Tom. "Here."
"That's so, I forgot all about him!" exclaimed Mr. Swift jumping up. "It slipped my mind. I let him in a while ago, before we came in the library, and he's probably been sitting in the parlor ever since. I thought he wanted to see you, Tom, so I told him to wait. And I forgot all about him. You'd better see what he wants."
"Andy Foger there—in the next room." murmured Tom. "He's been there some time. I wonder how much he heard about the city of gold?"
