This odd little booklet was first published in 1950 when flying saucers became a phenomenon in America. This edition is a republication by Borerland Sciences Research Associates, and seems to be an updated edition. (A parenthesis mentions a 1958 text, but this seems to be a later insertion by Riley Crabb, who lead BSRA after Layne.) The work is a study of UFOs without actually referring to any UFO sightings. In it, Layne come to the conclusion that the flying saucers and other ships are created in a place called Etheria, which exists alongside our reality, and are made of ether. Along the way, he includes several long quotations from other BSR associates, including Ramon Natalli, an entity said to be a sixteenth century astronomer channelled by Mark Probert. Probert and Layne, in this book and in The Coming of the Guardians, are responsible for some of the more extreme occult explanations of UFOs.