We conclude our miniseries comparing the legends to the real life of Gerbert d'Aurillac: mathematician, pope, and alleged magician. Today's variant of the Dark Legend comes from Walter Map, and we follow that with a look at the historical Gerbert's contributions to science. Today's Texts: Map, Walter. De Nugis Curialium. Translated by Montague R. James, historical notes by John Edward Lloyd, edited by E. Sidney Hartland, Cymmrodorion Record Series, no. 9, Honourable Society of Cymmrodorion, 1923. Gerbert d'Aurillac. The Letters of Gerbert with His Papal Privileges as Sylvester II, translated and edited by Harriet Pratt Lattin, Columbia UP, 1961.