Henry James based his ghost story, _The Turn of the Screw_, on an incident reported to the Psychical Society, of a spectral old woman corrupting the mind of a child. The central character in Arnold Bennett's novel, _The Ghost_, is a specter, one of the most rabid revenge ghosts in literature, who is eaten up with jealousy lest the woman he loved in life shall care for some one else. Algernon Blackwood uses much psychical material in his numberless stories of the supernatural, often mentioning the work of the Society, and Andrew Lang has contributed much to the subject. Arthur Machen has just published a collection of stories of war-apparitions that are interesting psychical specimens, called _The Bowmen_. In one story in the volume he shows us how a contemporary legend may be built up, since from a short piece of fiction written by him has evolved the mass of material relating to the angels at Mons. One tale is a story of the supernatural intervention of Saint George and his army to drive back the Germans and save the hour for the Allies, while another describes the vision of a soldier wounded in battle defending his comrades, who sees the long-dead heroes of England file past him to praise him for his valor. The minister gives him wine to drink and His voice was hushed. For as he looked at the minister the fashion of his vesture was changed. He was all in armor, if armor be made of starlight, of the rose of dawn, and of sunset fires; and he lifted up a great sword of flame. "Full in the midst, his Cross of Red Triumphant Michael brandished And trampled the Apostate's pride." Another case of collective apparitions is the experience of a soldier, wounded in battle, who tells of strange fighters who have come in to aid the English. He thinks they are some of the tribesmen that Britain employs, but from his descriptions the minister knows that they are the long-dead Greeks who have arisen to take part in the struggle which their modern descendants are reluctant to share. These stories are only a few among the many instances of supernaturalism in fiction traceable to the influence of the war.