One o'clock
At that moment weight had no effect . The travellers felt its complete disappearance in themselves . They were near the neutral point if they had not reached it . `` One o'clock ! '' said Barbicane . Michel Ardan put his match to a contrivance that put all the fuses into instantaneous communication . No detonation was heard outside , where air was wanting , but through the port-lights Barbicane saw the prolonged flame , which was immediately extinguished .