Examples from Virgil and Horace 304 Rhyme destructive of the rhythmical principle 306 Influence of rhythm on Provençal poetry 308 CHAPTER XXIX. RHYTHM. Stability of metrical rules in Provençal poetry 311 Las Leys d’Amors 311 Dante’s ‘De Vulgari Eloquio’ applicable to Provençal poems 313 The limits of the length of a verse 313 Verses most frequently used 316 The decasyllabic verse (endecasyllabus) 318 The cæsura 318 In ‘Boethius’ and epical poems 320 The lyrical cæsura 323 CHAPTER XXX. RHYME. Definition of the Leys d’Amors 326 Accordansa sonan, consonan, and leonisme 326 Rime riche 328 The position of rhyme (‘rims ordinals’) 330 Artificialities 331 Connection of stanzas by means of rhyme 333 The ‘clavis’ 335 Guillem de Cabestanh’s canzo ‘Li douz cossire’ 336 Further artificialities 337 CHAPTER XXXI. THE STANZA. Its formation 340 Dante’s work of great value 340 Definition of Leys d’Amors unsatisfactory 341 Musical considerations 342 Pedes and cauda 344 Frons and versus 345 Pedes and versus 347 Frons and cauda 347 Concatenatio 348 The tornada 351 Metrical analysis of a canzo by Bernart de Ventadorn 353 CHAPTER XXXII. SOME INTERLINEAR VERSIONS. Canzo by Guillem de Cabestanh (‘Li douz cossire’) 358 Idyll by Marcabrun (‘A la fontana’) 364 _PART I._ GENERAL CHAPTER I. THE LANGUE D’OC.