"Por la libertad?"
"Für Freiheit über alles!"
"Pass, friends."
The rifle grounded as the words were spoken, and the sentry stepped back to the wall of the passage.
At the same moment another bell rang beyond the door, and then the door itself opened as the other had done.
They passed through, and it closed instantly behind them, leaving them in total darkness.
Colston caught Arnold by the arm, and drew him towards him, saying as he did so—
"What do you think of our system of passwords?"
"Pretty hard to get through unless one knew them, I should think. Why the different languages?"
"To make assurance doubly sure every member of the Inner Circle must be conversant with four European languages. On these the changes are rung, and even I did not know what the two languages were to be to-night before I entered the house, and if I had asked for 'Mr. Brown' instead of 'Mr. Smith,' we should never have got beyond the drawing-room.