"An impressive and important cross-cultural study that has vast implications for history, religion, anthropology, folklore, and other fields. . . . Remarkably wide-ranging and extremely well-documented, it covers (among much else) the following: medieval Christian legends such as the 14th-century Ethiopian Gadla Hawaryat (Contendings of the Apostles) that had their roots in Parthian Gnosticism and Manichaeism; dog-stars (especially Sirius),...