"Stand back, on your life."

"You stand aside," cried Jack.

"Another step and I fire!" cried Lenoir.

"Bah!"

Jack pushed on.

Lenoir pulled the trigger.

Bang it went.

But the ball whistled harmlessly over Jack's head, and lodged in the slanting roof.

A friendly hand from behind the coiner had knocked up his arm in the very nick of time.

At the self-same instant some eight or ten men, fully armed, burst into the vault.