"I see them!" shouted Harry, pointing out their position. "And here's another one lying beside the pile. That means 'Danger in this direction,' according to my understanding. What do you think it means?"
"Wait a minute!" cried Jimmie. "Ned, in what direction is Paris from our present location?"
"Roughly speaking, southeast," answered Ned.
"Then I'll bet that's a warning for us not to go to Paris!" Jimmie exultantly went on. "The compass shows that the two piles of stones lie almost directly southeast from the Grey Eagle! That's it!"
"I wonder if The Rat knows Boy Scout signs and put those things there to head us off from following him! It is a sure thing that he was headed for Paris when he left here!" decided Jack.
"Guess you're right, Jack," Ned agreed. "But why should he sign himself 'Jean Voisin'? I can't understand that!"
"What does 'Voisin' mean, Jimmie?" asked Jack, laughing.
"Search me!" replied the lad. "I'm not up on French!"
"I think it means 'Neighbor'," Ned answered thoughtfully. "Wasn't that the meaning given in the article we were reading about airships where it told that 'Taube', the German name, means 'Pigeon' and that 'Voisin' means 'Neighbor?' I believe that's it!"
"Rather sarcastic, I should say!" ventured Harry. "It wasn't a very neighborly act to shut us up in that barn and then burn it down, while he flew away! He added insult to injury when he left this note! How did he expect us to find the note if we were burned in the barn?"