"Is there any likelihood of our being able to send out a call for assistance, Jessie?" he asked, quietly.
"I don't see how we can, Doctor Stanley, until we fix this radio set. We can't get any spark. We have to be able to get a spark to send a message. The message will be stumbling enough, I am afraid, even if we fix the thing, for none of us understands Morse very well. Unless Darry——"
"Don't look to me for help," declared the collegian. "I haven't sent a message since we put the yacht in commission. We had a fellow aboard here until the other day who knew something about wireless and he was the operator. Not me."
"Amy and I have a code book with the alphabet in it," said Jessie slowly. "I think if somebody read the dots and dashes to me I could send a short message. But there is something wrong with this circuit."
Just then Burd Alling came back. He brought with him a big corrugated cardboard container. In that the various parts of the radio outfit had been packed.
"What do you think about it?" he asked. "There is something here that I never saw before. See this jigamarig, Jess? Think it belongs on the contraption?"
"Oh!" cried Jessie, eagerly, pouncing on the small object that Burd held out to her. "I know what that is."
"Then you beat me. I don't," declared Burd.
"Let's see what else there is," said Darry, diving into the box. "I left you to get out the parts, Burd; you know I did."
"Oh, splash!" exclaimed his friend. "We might as well admit that we don't know as much about radio as these girls. They leave us lashed to the post."