CHAPTER V
IN PERIL
Upon inspection, it was found that three half-inch holes had been drilled into each pontoon. It was evident that only an enemy of Tom or of the Swift Company could have done such a thing.
"Ned, that proves it!" declared the young inventor gloomily.
Three Holes in Each Pontoon
"Proves what?" Ned asked.
"Can't you see? It all ties in with Mr. Damon's so-called relatives, and their knowledge of my formula for a bendable glass. Someone in our shops is a traitor—or worse!"
"But what has a damaged hydroplane to do with that?" objected Ned.