THE CAMPAIGN So the undiscoverable commander had reappeared upon the territory of the United States! He had never shown himself in Europe either on the roads or in the seas.

He had not crossed the Atlantic, which apparently he could have traversed in three days.

Did he then intend to make only America the scene of his exploits?
Ought we to conclude from this that he was an American?
Let me insist upon this point.

It seemed clear that the submarine might easily have crossed the vast sea which separates the New and the Old World.

Not only would its amazing speed have made its voyage short, in comparison to that of the swiftest steamship, but also it would have escaped all the storms that make the voyage dangerous.
Tempests did not exist for it.