"Are you certain there is nothing of the kind on board?" questioned Songbird. "Didn't you buy some rockets when we stopped at"
"Sure I did!" shouted Dick. "Just the thing—if they are still on board. And they may be—for I put them in a closet we don't often use."
Dick started on a hunt and soon put in an appearance with several rockets, such as are generally used on a ship as a signal of distress.
"They'll be good in more ways than one," said Tom. "They will keep those rascals in sight and also let folks know that we need help."
"Py golly! Ve vill haf a regular Fourth of Chuly, hey?" came from Hans.
A rocket was placed in position at the bow end of the houseboat and the eldest Rover touched it off. It sizzed for an instant and then shot forward over the water in the direction of the gasoline launch, making the scene light for the time being. It came down just over the Venus' bow.
"Hi! stop that, or we'll fire at you!" came from the launch, and then a pistol rang out and the ball whistled over the deck of the Dora.
"Are they really shooting at us?" asked Songbird, nervously, while Hans sought the shelter of the cabin in a hurry.
"I reckon not," answered Harold Bird. "That was simply meant as a warning."
Those on the houseboat waited for several
