Reprint of the London edition published by T. Werner Laurie in 1906. Octavo, original purple cloth titled in silver. Issued as a volume in the Arno Press Supernatural and Occult Fiction collection, edited by R. Reginald and Douglas Menville. A fine copy without dust wrapper, as issued. ¶ "Science fiction novel of flying machines, an averted world war and the fourth dimension..." - Locke, A Spectrum of Fantasy (1980).