At any rate there was a blinding flash, a great cloud of white smoke shot out, and a loud boom.
There was a blinding flash.
"An explosion!" yelled Sammy.
"They're shooting at us!" cried Bob.
"Come on—get out of here!" gasped Frank, as they made their way through the blinding and choking vapor to where they imagined the secret door to be.
CHAPTER XI THE STRANGE HERMIT
"Come on, fellows, this way!"