390 



INDEX 



Platania, Prof., 119, 347 



Plutonic rocks, general description, 



249-251 ; relative frequency, 235 ; 



distribution, 249, 374 ; mode of 



occurrence, 180, 182, 184, 185, 193, 



211 



Polarity of magnetic rocks, 366-370 

 Porphyrites, 136, 175, 181, 197, 199, 



204, 211, 261, 268, 274, 299 ; belong 



to many orders, 236 

 Prismatic pyroxene of groundmass, 



its use in classification, 236, 241- 



248 ; sub-orders and genera, 265, 



270-272, 283, 287, 289, 298, 300, 302 

 Profiles of Vanua Levu, 3-6, 62, 83, 



107, 113, 153, 167, 173 

 Propylites, 68-72, 106, 147, 162, 1 8 1, 



191, 199,204, 214, 215,268-270, 282, 



297 ; origin of, 69, 72, 191. 

 Pteropod-ooze deposits, description of, 



320 ; mode of occurrence, 84, 86, 



109, 139, 201, 205, 344 

 Pumice-tuffs, acid, 6, 207, 218-223, 



229-233 ; general description, 336 ; 



special descriptions, 218, 220, 231 

 Pumice-tuffs, basic, 119, 333; see 



Hyalomelan-tuffs 

 Pyroxene of groundmass, as a basis of 



classification, 236 ; see Granular 



pyroxene, Prismatic pyroxene, 



Ophitic structure, and Synopsis 

 Pyroxene, rhombic, characters of, 285, 



306 ; intergrowths with monoclinic, 



266, 306 

 Pyroxene, derivation from hornblende, 



306 



QUARTZ, crystals of, 106, 191, 354, 

 veins of, 106, 116 



Quartz-andesites ; see Dacites 



Quartz-porphyries, mode of occur- 

 rence, 215, 219, 220, 226, 227, 229- 

 233 ; relative frequency, 235 ; 

 general description, 309-311; dis- 

 tribution. 6, 207, 374 



Quartz-rock, 139, 351, 354 



RAINFALL, 30, 68, 120 



Rambi, island, 2 ; hot springs, 22 



Ravi-koro mountain, 1 59 



Raviravi, 94 



Ravuka, 120; hot spring, 31 



Renard, Prof, 293, 306, 338, 344 



Rewa District in Vanua Levu, 95, 96 



Rewa River, Viti Levu, changes at 



mouth, 1 6 



Rhyolites, 209 ; see Quartz-porphyries 

 Rhyolite-glass, 220,311 



Rhyolitic-tuffs ; see Pumice-tuffs, acid 

 Ridge-mountains, their general ap- 

 pearance, 2, 6, 146, 153, 185, 210, 

 374 ; their structure and mode of 

 origin, 75, 145, 156, 165, 166, 171, 



172, 177-180, l82, 1 88, 202, 210-212 



216, 234 ; final conclusion, 375 

 Rivers ; see under Ndreketi, Lambasa 



Sarawanga, Wainikoro, &c. 

 Rivers, eroding power of, 62 

 Rocholl, Mr. H., 29 

 Rosenbusch, Prof., 306, 344 

 Rukuruku Bay, 53, 269 



SALT LAKE District, 2, 6, 9, 192-196 

 Sarawanga Plains, 15, 129-132, 351, 



356 



Sarawanga River, 15, 62, 129-131 

 Satulaki, 176, 268 

 Savarekareka Bay, 190, 326 

 Savulu, 118 



Savu-riti Mountain, 210, 212 

 Savu-savu Hot Springs, 21, 25-30, 



189 



Savu-savu Peninsula, 189-192, 288 

 Sawa-ndrondro, 185 

 Scirpodendroncostatum (Giant Sedge), 



79,83 



Scoriaceous lava ; see Lava flows 

 Sealevu District, 146, 155, 156 

 Sealevu Divide, 136 

 Seatovo Range, 73-75 

 Seatura, mountain, 2, 3, 56, 253, 261, 



374 ; general description of, 61-72 ; 



old town of, 67 

 Sections across Vanua Levu, 62, 107 ; 



see also Profiles 

 Seemann, Dr., 55 

 Sella, on magnetic rocks, 362 

 Semi-opal, 351,353 

 Sesaleka Mountain, 3, 12, 53 

 Siliceous concretions, 81, 83, 96, 132, 



135,351-355 



Siliceous rock, blocks of, 126, 355 

 Siliceous sinter, 24, 25, 32, 33, 37, 42 

 Silicification, conditions of, 358 

 Silicified corals, 10, 13, 81, 132, 135, 



138, 139, 207, 221, 226-228 ; theory 



of their origin, 228, 357 ; general 



account of, 350-360 

 Silicified fern rhizome, 360 

 Silicified nullipores, 353, 354 

 Singa-singa, no 

 Singatoka River, Viti Levu, 7 

 Skinner, Mr. S., 367 

 Skye, Isle of, magnetic rocks, 362 

 Small wood, Mr., 196 

 Smythe, Colonel, 22, 195 



