It was in the days when the combined fleets of Europe were thundering with cannon on the rocky walls of Gibraltar, in the hope of driving the English out, and, the long effort having proved in vain, Joseph Montgolfier, of whom we have spoken, fell to wondering, as he sat by the fire, how the great task could be accomplished. 'If the soldiers and sailors could only fly,' he thought, 'there would be no difficulty.' He looked at a picture of the Rock lying on the table beside him, and saw many places on its summit very suitable for such flying foes to settle on. 'But,.
