Professor Challenger

Professor Challenger imperiously summons his three best friends to come this country house, each one to bring a cylinder of pure oxygen. When they arrive, the reason for this strange request becomes terrifying clear. Professor Challenger has become convinced that the earth is entering a poison belt of ether and that life upon this planet is doomed.

'You will conceive a bunch of grapes,' said he, 'which are covered by some infinitesimal but noxious bacillus. The gardener passes it through a disinfecting medium. It may be that he desires his grapes to be cleaner. It may be that he needs space to breed some fresh bacillus less noxious than the last.'

Three years after the events that took place in "The Lost World", Professor Challenger urgently summons his fellow explorers to a meeting. Oddly, he requires each to bring an oxygen cylinder with him. What he soon informs them is that from astronomical data and just received telegraphs of strange accidents on the other side of the world, he has deduced that the Earth is starting to move through a region of space containing something poisonous to humankind.

The Land of Mist is a novel written by Arthur Conan Doyle in 1926. Although this is a Professor Challenger story, it centres more on his daughter Enid and her colleague. Heavily influenced by Doyle’s growing belief in Spiritualism after the death of his son, brother, and two nephews in World War I, the book focuses on Edward Malone’s at first professional, and later personal interest in Spiritualism.