The Story of Atlantis and The Lost Lemuria are two pieces by W. Scott-Elliot, a Theosophist and an associate of Madame H.P. Blavatsky and Henry Steele Olcott in the early days of the Theosophical Society. The Theosophists believed they were descendants of the Aryans, and that the Aryans had originally come from Atlantis. Atlantis and Lemuria (also called Mu) were continents in the Atlantic and Pacific oceans that were supposedly destroyed in great catastrophes in prehistoric days and sank beneath the sea. They were said to be highly advanced civilizations, capable of many things not possible in later days. Scott-Elliot also claimed that Atlantis split into two linked islands, one called Daitya, and the other Ruta. Eventually only a remnant of Ruta remained, called Poseidonis, before that too disappeared. Scott-Elliot expands on the work of Ignatius Donelly, whose Atlantis, the Antediluvian World started the subsequent craze on the topic, and adds an imaginative Theosophic history of the Earth, including details of the Theosophic concept of human evolution and everyday life in old Atlantis and Lemuria.