When Mirando arrives for the debate, he is offered an ascent in Halran's balloon. Accepting, he quickly discovers himself Marko's captive, his safety dependent on all the philosophers being escorted to the coast and given charge of a steamship (another recent invention). The scheme goes without a hitch, and all the members of the convention proceed by sea to Mnaenn, which they seize from the witches.
When Mirando arrives for the debate, he is offered a ride in Halran's balloon. Accepting, he quickly discovers himself Marko's captive, his safety dependent on all the philosophers being escorted to the coast and given charge of a steamship (another recent invention). The scheme proceeds without a hitch, and all the members of the convention proceed by sea to Mnaenn, which they seize from the witches.