“Well, I’ll be blowed,” exploded the captain, “if I didn’t think you did it for a lark.”
“There is one like it on the Marjorie,” said Jim, who was using the binocular.
“Well, what do you think of that!” burst out the captain.
“What does it mean?” asked Tom.
“It means that someone on board is exchanging signals with the Marjorie,” replied the professor.
“I wish I could catch them at it,” muttered the captain, grimly.
“Let us take turns in watching,” suggested Jim.
“I am going to do a little watching on my own account,” growled the captain, making a dash for the supposed signal.
“Don’t pull it down,” advised the professor, “perhaps we can see who puts them up.”