"I can't think what caused it."

"That noise you mean?"

"Yes. Wasn't it queer?"

"Oh, not so very. At home we wouldn't give it a second thought."

"Yes," agreed Belle, "but there are so many ways of explaining noises in town, and so few ways up here. I wonder if that is the beginning of the surprises, Cora?"

"If it is they aren't so unpleasant. Noise never hurt any one."

So they said nothing to the others about the little disturbance in the night, and the only remark the others made, having any reference to it, was that of Walter's about thunder.

"It must have been thunder," Cora said, "for if the noise had been in our bungalow the boys couldn't have heard it in theirs."

"I don't see how they could," Belle agreed.

"But, all the same, I'm going to have some way of calling to Jack and the others without screaming our lungs out," declared Cora. "It's only right to be able to summon them if we want them. One of us might become ill, and they'd have to go for the doctor. I'd rather call Jack than Mr.

Floyd."

Cora spoke to her brother that afternoon.

"We should have some sort of speaking tube," he a.s.sented. "I might rig up one of the string telephones we used to make with tin baking powder boxes that served both as transmitter and receiver."

"Can you do it?" asked Cora.

"I guess so."

"I know something better than that," Paul put in. "There's a toy telephone that comes now, made of string, but the baking powder boxes are replaced by wooden cylinders with parchment tightly stretched over one end. You can hear quite well with them."

"Where can we get it?" asked Cora.

"I have one," Paul said. "I bought it just before we left to come up here, intending to give it to a kid cousin of mine, but I forgot to mail it. You can use that if you like."

"Just the thing!" exclaimed Jack. "The dear girls can't get along without us after all; can they?"

"Oh, don't flatter yourself that we're as fond of you as all that,"

laughed Belle. "But we do like to have you within call-especially up here."

"Why, have you seen any suspicious characters lurking around?" asked Walter.

"Nary a lurk," responded Cora. "We're just getting ready for emergencies."

The toy telephone was strung that day from the girls' bungalow to that of the boys', and it worked quite well. As simple as it was, and it scarcely could have been more simple, talk could be plainly heard over it. The string took up the vibrations imparted to the parchment by the voice, and transmitted them across s.p.a.ce to the other end of the line.

Of course the string had to be tight, and it must not touch anything in its course, or the vibrations would have been interfered with. But s.p.a.ce was what they had most of in Camp Surprise.

"To my mind the camp isn't living up to its name," declared Paul, after the telephone had been put up and tested, the boys sending any number of foolish messages over the string. "No, sir! There hasn't been a surprise worth talking about," went on Paul. "Why doesn't something happen?"

"Give it time," suggested Jack.

"Perhaps that noise was the start," said Cora to Belle when they were alone.

"Perhaps."

The trip down to the hotel had given the young folks the information that there were dances twice a week, the Sat.u.r.day night "hop" being quite an event. They were cordially invited to attend, and the first Sat.u.r.day night in camp they took advantage of the chance.

The crowd was not large, but, as Walter said, it was "nice and comfortable," and the girls and boys thoroughly enjoyed the dance. The hotel proprietor introduced them to some other young folks and, as was voted by Jack and his chums afterward, "a large and glorious time was had by all."

"What a splendid moon!" cried Belle, as she walked along with Jack on the way home. "It's a shame to go to bed."

"Let's don't!" proposed Paul. "Let's go down where we left the motor boat and have a ride."

"Let's don't!" cried Cora. "Walk over that rough mountain road at this hour of the night? I guess not!"

"But look at the moon!" begged Paul. "The glorious moon!"

"You've been looking at it too long already," was Cora's retort. "I guess you're looney."

And so, laughing and joking, they walked on.

"This is how it goes!" said Belle suddenly, seemingly apropos of nothing at all, and, at the same time she began to step backward and forward in a peculiar manner in the road.

"What in the world--" began Hazel.

"That new Cortez step the girl in pink was doing with that nice man dancer," Belle explained. "I've been puzzling over it. I hoped he would ask me to dance, but he didn't."

"Say, I like that!" cried Walter. "Didn't I ask you?"

"Yes, but you can't do that step. I remember now how it went. I was watching that couple. It's a rocking step forward, then one back, step back with the left, draw the right and go forward again with the left, see!"

She executed it there in the road, her shadow, cast by the moon, bobbing curiously back and forth.

"It is pretty," agreed Cora. "How does it go?"

Belle and she took a dancing position and Cora had soon acquired the new Cortez step.

"Now you've got me doing it!" cried Jack. "Come on, Hazel, I'll show you."

"He doesn't even know himself," derided Cora.

"You watch!" challenged Jack.

"Why, he can do it," said Belle, as she looked at Jack and Hazel. For Hazel was a natural dancer and, it developed, she, too, had been watching the girl in the pink dress.

"Well, here we are," said Bess, as they reached their bungalow. "I'm tired."

"Is that all you're going to say, after we took you to the dance?"

demanded Walter.