1932. Contents: desert; Islam and Judaism born of the desert; history of Islam; Koran; Judaism; Sinai and the law; polygamy; genealogical tree of the Jew; Christianity; Jesus of Nazareth; after Calvary; rupture; ecclesiastical power and schism; historical summary of findings in the evolution of Judaeo Christianity; synopsis of the Christian evolution; old covenant and the new and connecting link; coming of the Avatar.