Quickly as he spied the Treddie, Bentley waved his cap in signal for them to come in.

"There," added Cleo; "he has a message, I think. See, he has a paper in his hand."

"Don't get out," the boy called. "I'll throw it in," and wrapping a piece of paper weighted with a pebble, around the smaller slip, he easily tossed the message into Julia's lap.

"It's addressed to the scouts," said Louise. "You read it, Cleo."

The engine had not been turned off, so that it readily picked up speed again, as the girls waved gayly to Bentley. Cleo smoothed out the little note anxiously, and every one saw it was written on the old-time yellow paper. Cleo read aloud:

"Bentley is going home and I won't stay here any longer. Watch for my wig-wag signal from the stone arch, and come to rescue me and Royal. Must watch for chance. About three, maybe." It was signed "Kitty."

"Another wig-wag rescue," repeated Helen, fluttering with excitement. "Won't it be splendid to take them both away?"

"But what shall we do with them?" asked Isabel. "I know one doesn't dare take even a lost child indoors without danger of arrest."

"Then we'll keep them on the porch," replied Cleo crisply.

"And we can notify Captain Dave or even our police officer. Then there will be no possibility of complications," said Louise.