The Roaring Trumpet
"The Roaring Trumpet" is a fantasy novella by American writers L. Sprague de Camp and Fletcher Pratt. The initial story in their Harold Shea series, it was first published in the May 1940 issue of the fantasy pulp magazine Unknown. It first appeared in book form, together with its sequel, "The Mathematics of Magic", in the collection The Incomplete Enchanter, issued in hardcover by Henry Holt and Company in 1941, and in paperback by Pyramid Books in 1960. It has since been reprinted in various collections by numerous other publishers, including The Compleat Enchanter (1975), The Incompleat Enchanter (1979), The Complete Compleat Enchanter (1989), and The Mathematics of Magic: The Enchanter Stories of L. Sprague de Camp and Fletcher Pratt (2007). It has been translated into Dutch and Italian. In 2016, the story was shortlisted for the Retro Hugo Award for Best Novella. The Harold Shea stories are parallel world tales in which universes where magic works coexist with our own, and in which those based on the mythologies, legends, and literary fantasies of our world can be reached by aligning one's mind to them by a system of symbolic logic. In "The Roaring Trumpet", Shea visits his first such world, that of Norse mythology. Plot summary Psychologist Reed Chalmers speculates that the mental problems of his patients may stem from their minds not being fully in tune with the world they live in, but rather, partially in sync with other, parallel universes. He holds that if their minds were to be correctly aligned they could be cured, and, contrarily, that if completely realigned to another universe, they would be projected into that universe. Chalmers has devised a system of symbolic logic to encode the underlying assumptions of a universe into a mathematical formula, the use of which he believes could affect such a realignment. He is, however, hesitant to put his theory to a practical test. Chalmers's subordinate colleague Harold Shea has fewer qualms. Dissatisfied with his life, he attempts to use his boss's process to project himself into the world of Irish heroic mythology, where with his modern knowledge he thinks to set himself up as a wonder worker. However, interdimensional travel proves an inexact science, and he misses his target reality landing instead in the decidedly colder, bleaker world of Norse myth. Moreover, the adjustment is complete; now speaking Old Norse, Shea is unable to read the English language Boy Scout Handbook he has brought as a survival manual—worse, he finds his new world's superstitious, pre-scientific belief system encoded in its basic physics. His matches won't light, his stainless steel knife rusts, and magic actually works. Worst of all, the world is on the verge of Ragnarök, the final conflict between the Gods and the Giants. Lost and freezing, Shea falls in with Odinn, who leads him to the mortal farmstead of Sverre, where the Gods are meeting. There he is befriended by the servant Thjalfi, through whose offices he comes under the dubious patronage of the