CONTENTS xvii 



CHAPTER XVII 



THE VOLCANIC ROCKS OF VANUA LEVU 



Their varied character, 235. Their classification, 236. Descriptive formula, 

 237. Synopsis, 239. Orders of the Olivine-Basalts, 241. Orders of the 

 Augite-Andesites, 245. Orders of the Hypersthene-Augite-Andesites, 247. 

 Description of the Plutonic Rocks, 249 Pages 235 251 



CHAPTER XVIII 



THE VOLCANIC ROCKS OF VANUA LEVU (continued) 



The Olivine Basalts Pages 252 265 



CHAPTER XIX 



THE VOLCANIC ROCKS OF VANUA LEVU (continued) 



The Augite-Andesites Pages 266 284 



CHAPTER XX 



THE VOLCANIC ROCKS OF VANUA LEVU (continued) 



The Hypersthene-Augite-Andesites Pages 285 292 



CHAPTER XXI 



THE VOLCANIC ROCKS OF VANUA LEVU (continued} 

 THE ACID ANDESITES, TRACHYTES, QUARTZ-PORPHYRIES. 



The Hornblende-Andesites of Fiji, 293. Occurrence of Dacites in Fiji, 294. 

 Suggestion of " felsitic andesite " as a rock-name, 295. The Acid Andesites 

 of Vanua Levu, 295. The Hypersthene-Andesites, 296. The Horn- 

 blende-Hypersthene-Andesites, 298. The Quartz-Andesites or Dacites, 

 302. Tabular comparison of the Acid Andesites, 304. The characters of 

 the Rhombic Pyroxene, 306. Magmatic Paramorphism, 306. The Oligo- 

 clase Trachytes, 308. Quartz-Porphyries and Rhyolitic rocks, 309. 



Pages 293-311 



CHAPTER XXII 



THE VOLCANIC ROCKS OF VANUA LEVU (continued) 



Basic pitchstones and basic glasses, 312. Volcanic Agglomerates, 314. 



Pages 312316 

 b 



