it could not be told whether they had been made by Dick and his chums, or by strangers who landed, took away the launch and thus reached the yacht.
"Well, we'll put up a signal, and leave a note in some stones at the foot of the pole, telling any rescue party that may land, to come to the other side of the island," proposed Dick. "And there's another thing—what shall I make the signal of?"
"We'll have to use some of our clothing," suggested Senor Alantrez. "I can spare my vest."
"I guess we all can," said Dick. "We don't need 'em in this climate, and three vests, fluttering from a flagstaff, will attract attention almost anywhere."
They cut down a tall, slender tree, tied their vests to it, one below the other, and then, digging a hole in the sand with the hatchet, well above high-water mark, they set up the pole. The signal showed conspicuously.
"Now, that's done, we'll take a walk along the beach before we go back," proposed Dick. "Maybe we can find some clams or some crabs to eat. Well, this is certainly a change from what I was doing yesterday. By the way, Pedro, how did you come to be kidnapped, anyhow. I meant to have you tell us, but so many other things happened that I overlooked it. Did you get any clew to who the men were?"
"I was just going to speak about it myself,"
