The difference between feudal castles and those of the Routiers-- Illustration of the character of the nobles--Two Counts of Perigord-- The nobles in Auvergne--"Les grands Jours"--La Roche Saint Christophe-- Surprised and destroyed--Reoccupied by the Huguenots--Final destruction--La Roche Gageac--Its history--Jean Tarde--Ravages of the Huguenots--Gluges--La Roche Lambert--Habichstein--Bürgstein--The spy-- Kronmetz--Covolo--Puxerloch--The shadowless man--Nottingham Castle-- Arrest of Mortimer--Outmost castles--La Grotte de Jioux--Clovis crosses the Vienne--Le Gué du Loir--Antoine de Bourbon--Calvin at Saint Saturnin--His cave--La Roche Corail--Cave in which the "Institute of the Christian Religion" was written--Effects produced by this work --Preparation of men's minds for reform--Havoc wrought to art by the Calvinists--La Rochebrune--A cave-colander--Necessity for outlook stations--Frontier fortifications CHAPTER VII SUBTERRANEAN CHURCHES Basilicas and catacumbal churches--Preference of the people for the latter--The cult of martyrs encouraged this--Crypts--Elevation of relics--Church of SS. John and Paul on the Coelian Hill--Temples were originally sepulchres--Basilican churches converted into mausoleums-- Dedications--Altars of wood changed for altars of stone--At first the bodies of martyrs were not dismembered--But dismemberment was made necessary by the transformation--The Martyrium of Poitiers--S. Emilion --Carvings--Crypt--Aubeterre--A Huguenot stronghold--Orders issued by Jeanne d'Albret--Her extended powers--The monolithic church--Menaced by ruin--Rocamadour--Lirac--Mimet--Caudon--Natural caves used as churches--Gurat--Lanmeur--Story of S. Melor--Dolmen Chapel of the Seven Sleepers--Another at Cangas-de-Ones--Confolens--Subterranean churches in Egypt--In Crete--The sacred caves in Palestine--Revival of cave sanctuaries by the Crusaders--Springs of water in crypts CHAPTER VIII ROCK HERMITAGES Tibetian recluses--Christian hermits in Syria and Egypt--The Essenes and Therapeutæ--Description by Philo of the latter--Buddhist and Manichæean influence--Difference in motive--Likeness superficial-- Possible necessity for the adoption of asceticism--Instance of extravagant asceticism in Syria--Extravagances in Ireland--In England --Early European solitaries--The Beatus Höhle--Grotto of S. Cybard-- Decadence--Hermits in Languedoc--In Germany--A grocer hermit-- Hermitage at S. Maurice--The Wild Kirchlein--The cave of S. Verena at Soleure--That of Magdalen at Freiburg--Oberstein--Hermitage at Brive-- La Sainte Beaume--Sougé--Villiers--Montserrat--Subiaco--La Vernia-- Warkworth--Knaresborough--Robin Hood's stable--Roche--Anchor Church-- Royston cave--Its carvings--Kindly remembrance of the hermit--The hermit a loss CHAPTER IX ROCK MONASTERIES