THE most famous of the ancient religious Mysteries were the Eleusinian, whose rites were celebrated every five years in the city of Eleusis to honor Ceres (Demeter, Rhea, or Isis) and her daughter, Persephone. The initiates of the Eleusinian School were famous throughout Greece for the beauty of their philosophic concepts and the high standards of morality which they demonstrated in their daily lives. Because of their excellence, these Mysteries spread to Rome and Britain, and later the initiations were given in both these countries. The Eleusinian Mysteries, named for the community in Attica where the sacred dramas were first presented, are generally believed to have been founded by Eumolpos about fourteen hundred years before the birth of Christ, and through the Platonic system of philosophy their principles have been preserved to modern times.

It is not then without reason that in the mysteries that obtain among the Greeks, lustrations hold the first place; as also the layer among the...