That is, I won't let him know that I know," said Ned to himself,
"though he is probably as well aware of the situation as I am. But it
sure is queer that this Professor Beecher should have taken such a
fancy to Mary, and that her father should regard him so well. That is
natural, I suppose. But I wonder how Mary herself feels about it.
That is the part Tom would be most interested in.

"No wonder Tom wants to get ahead of this young college chap, who
probably thinks he's the whole show. If he can find the buried city,
and get the idol of gold, it would be a big feather in his cap.

"He'd have no end of honors heaped on him, and I suppose his hat
wouldn't come within three sizes of fitting him. Then he'd stand in
better than ever with Mr. Nestor. And, maybe, with Mary, too, though I
think she is loyal to Tom. But one never can tell.

"However, I'm glad I know about it. I'll do all I can to help Tom,
without letting him know that I know. And if I can do anything to help
in finding that idol of gold for Professor Bumper, and, incidentally,
Tom, I'll do it," and he spoke aloud in his enthusiasm.

Ned, who was walking along in the darkness, clapped his open hand down
on Tom's magazine he was carrying home to read again, and the resultant
noise was a sharp crack. As it sounded a figure jumped from behind a
tree and called tensely:

"Hold on there!"

Ned stopped short, thinking he was to be the victim of a holdup, but
his fears were allayed when he beheld one of the police force of
Shopton confronting him.

"I heard what you said about gettin' the gold," went on the officer.
"I was walkin' along and I heard you talkin'. Where's your pal?"

"I haven't any, Mr. Newbold," answered Ned with a laugh, as he
recognized the man.

"Oh, pshaw! It's Ned Newton!" exclaimed the disappointed officer. "I
thought you was talkin' to a confederate about gold, and figured maybe
you was goin' to rob the bank."

"No, nothing like that," answered Ned, still much amused. "I was
talking to myself about a trip Tom Swift and I are going to take
and----"

"Oh, that's all right," responded the policeman. "I can understand it,
if it had anything to do with Tom. He's a great boy."

"Indeed he is," agreed Ned, making a mental resolve not to be so public
with his thoughts in the future. He chatted for a moment with the
officer, and then, bidding him good-night, walked on to his home, his
mind in a whirl with conglomerate vision