This attractive digital edition of one of this prophetic writers last and most imaginative books is a companion volume to his aeroplane-prediction romance "Robin the Conqueror." In this story, the scenes of which are laid in America, there is a machine, a sort of hydro-aeroplane. "The Terrible," that travels on the land like an automobile, under the water like a submarine, on the surface like a motor boat and in the air like an aeroplane...