"But this solves the ghost mystery, girls. You and the other folks
have been frightened by white Prince scooting about the island."

"We-- we weren't so very frightened," spoke Mollie.

"But the rattling chains?" questioned Grace.

"What were they?"

"The stirrups, of course," answered her brother. "And, by Jove, Grace,
if the stirrups are on Prince the saddle must be on him also, and the
papers---- "

"Oh, isn't this just fine!" cried Grace, her face alight. "Now papa
can complete that business deal. I never loved a ghost before. Dear
old Prince!"

"Of course we are assuming a lot," said Will. "It may not be Prince
after all, but all signs point to it. He must have been on this island
all the while. No wonder we could get no trace of him. Probably he was
so frightened at the storm and the auto, and his fall, that he ran on
until he came to the lake. Then his old training came back to him, and
in he plunged. There's enough fodder here for a dozen horses. He's
just been running wild. I'll have my own troubles with him when I get
him back."

"But how are you going to do it?" asked Frank.

"We'll search the island for him," replied Will. "Come on, we'll start
now."