In a very short time he had chipped off enough of the quartz to reveal a curious yellow vein which seemed to extend an indefinite distance into the ledge.
The professor appeared excited.
Seeing this, Frank put his helmet close to his and shouted:
“Well, Von Bulow, what do you make of it?”
“Gold!” shouted the excited scientist.
Frank was astounded.
“Gold?” he repeated.
“Yes.”
“A submarine gold mine?”
“Exactly.”