ten o'clock
After an interval allowed for drying , a cylinder of gas was dragged out of the after storeroom where they were kept , and the section which had been injured was refilled by means of its own inflation hose , which was provided with a nozzle adjustable to the mouth of the gas receptacle . To the boys ' surprise , when darkness fell the dirigible still forged ahead and no change of her course was observable . They had imagined that she was on her way to join Luther Barr at some nearby meeting-place , where the Brigand would take the treasure on board , but , so far , her navigators showed no intention of alighting . At ten o'clock Malvoise stepped up to the three adventurers and said : `` It is a rule on board that all lights shall be extinguished at this hour . If you are ready for bed I will show you to your sleeping place . '' He led the way to a small cabin fitted with two bunks and lounge . The boys wanted to ask a score of questions , but knew it would be useless , so remained silent .