“More than likely she went down with the current.  They hadn’t any steam tug handy to pull her.”

Paul Livingstone was appealed to and told them where they could find the coal docks at which their own tug was lying.  All hurried to the place and called up Captain Carson.

“I’ll get up steam just as soon as I can,” said the tug captain, and hustled out his engineer and fireman.  Soon the black smoke was pouring from the tug’s stack and in less than half an hour they were ready to move.

“This seems like a wild-goose chase,” remarked Sam.  “But it is better than standing around with one’s hands in his pockets.”

“I wish I had dat Dan Baxter heah!” said Aleck Pop.  “I’d duck him in the ribber an’ hold him undah ’bout ten minutes!”

All were soon on the steam tug, which was crowded by the party.  The lanterns were lit, and they moved down the Ohio slowly and cautiously.

“We had better move from side to side of the river,” suggested Dick.  “Then we won’t be so liable to pass the houseboat without seeing her.”

As all of the party were wet, they took turns in drying and warming themselves in the engine-room of the tug.  Those on the lookout did what they could to pierce the gloom, but with small satisfaction.

Half an hour later they passed a small river steamer and hailed the craft.

“What’s wanted?” shouted somebody through a megaphone.

“Seen anything of a houseboat around here?”

“No,” was the prompt answer.

“All right; thanks!” And then they allowed the river steamer to pass them.

“Dis night vos so vet like neffer vos!” remarked Hans.

“Well, we have got to make the best of it,” answered Dick.  “I don’t care how wet I get, if only we are successful in our chase.”

“I am mit you on dot,” returned the German cadet, quickly.

Two hours passed and they saw no other craft.  They had passed several settlements of more or less importance, but not a sign of the missing houseboat appeared.

“Here comes something!” cried Tom, presently, as they heard a distant puff-puff.

“Steer in the direction of that sound,” said Dick, to Captain Carson, and this was done.

Out of the mist appeared the light of a long launch, having on board several officers of the law.

“Steam tug, ahoy!” was the cry.

“Ahoy!” shouted back Captain Carson.

“Seen anything of another launch around here?”

“No.”

“See anything of a small sailboat?”

“No.”

“Confound the luck!” came in another voice from the launch.

“What’s the matter?” asked Paul Livingstone.

“Hullo, Mr. Livingstone, is that you?” called out one of the officers of the law on the launch.

“It is, Captain Dixon.  What’s the trouble?”

“We are looking for those two horse thieves, Pick Loring and Hamp Gouch.  I suppose you know they escaped.”