The Poison Belt and Other Professor Challenger StoriesSummoned from London, journalist Edward Malone, narrator of Arthur Conan Doyles prehistoric adventure novel The Lost World, finds himself reunited with his erstwhile travelling companions at the country home of their leader, the indomitable Professor Challenger. Confined in a sealed room with the cylinders of oxygen they have brought at his request, Professor Challenger informs them that the Earth is passing through an immense miasma of poisonous