One o'clock
The objects lying around had no weight . The travellers felt their bodies to be as buoyant as a hydrogen balloon . Barbican let go his chronometer , but it kept its place as firmly in empty space before his eyes as if it had been nailed to the wall ! `` One o'clock ! '' cried Barbican in a solemn tone . Ardan instantly touched the discharging key of the little electric battery . A dull , dead , distant report was immediately heard , communicated probably by the vibration of the Projectile to the internal air .