To Hell in a Hamper

Professor Pettibone, eminent Victorian balloonist, has a problem. He can't get it up. His balloon that is. If he can't reach an altitude of 20,000 feet, and soon, both he and his mysterious travelling companion Hubert Booby will be burned to a cinder by an erupting volcano! But what is Mr. Booby concealing under his overcoat? Do all Ecuadorian peasants have BSc's? And what, in the name of all that…