Problem of close connection of cults. Their apparent divergence. Nature of deities examined. Attis. Mithra. The Messianic Feast. Dieterich, Eine Mithrasliturgie. Difference between the two initiations. Link between Phrygian, Mithraic, and Christian, Mysteries to be found in their higher, esoteric, teaching. Women not admitted to Mithraic initiation. Possible survival in Grail text. Joint diffusion through the Roman Empire. Cumont's evidence. Traces of cult in British Isles. Possible explanation of unorthodox character of Grail legend. Evidence of survival of cult in fifth century. The Elucidation a possible record of historic facts. Reason for connecting Grail with Arthurian tradition.

CHAPTER XIII

The Perilous Chapel

The adventure of the Perilous Chapel in Grail romances. Gawain form.
Perceval versions. Queste. Perlesvaus. Lancelot. Chevalier à Deux
Espées. Perilous Cemetery. Earliest reference in Chattel
Orguellous. Âtre Perilleus. Prose Lancelot. Adventure part of
'Secret of the Grail.' The Chapel of Saint Austin. Histoire de Fulk
Fitz-Warin. Genuine record of an initiation. Probable locality
North Britain. Site of remains of Mithra-Attis cults. Traces of
Mystery tradition in Medieval romance. Owain Miles. Bousset,
Himmelfahrt der Seele. Parallels with romance. Appeal to Celtic
scholars. Otherworld journeys a possible survival of Mystery
tradition. The Templars, were they Naassenes?

CHAPTER XIV

The Author

Provenance and authorship of Grail romantic tradition. Evidence points to Wales, probably Pembrokeshire. Earliest form contained in group of Gawain poems assigned to Bleheris. Of Welsh origin. Master Blihis, Blihos, Bliheris, Bréri, Bledhericus. Probably all references to same person. Conditions of identity. Mr E. Owen, and Bledri ap Cadivor. Evidence not complete but fulfils conditions of problem Professor Singer and possible character of Bleheris' text. Mr Alfred Nutt. Irish and Welsh parallels. Recapitulation of evolutionary process. Summary and conclusion.

"Animus ad amplitudinem Mysteriorum pro modulo suo dilatetur, non Mysteria ad angustias animi constringantur." (Bacon.)

"Many literary critics seem to think that an hypothesis about obscure and remote questions of history can be refuted by a simple demand for the production of more evidence than in fact exists.—But the true test of an hypothesis, if it cannot be shewn to conflict with known truths, is the number of facts that it correlaates, and explains." (Cornford, Origins of Attic Comedy.)

CHAPTER I