39° 



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, 181, 



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 ; intergrovvths with monoclinic, 



266, 306 

 Pyroxene, derivation from hornblende, 



306 



Quartz, crystals of, 106, 191, 354, 

 veins of, 106, 1 16 



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, 16 

 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, 182, 188, 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, 1 29-1 31 

 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, 

 J 38, 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, 1 10 

 Singatoka River, Viti Levu, 7 

 Skinner, Mr. S., 367 

 Skye, Isle of, magnetic rocks, 362 

 Smallwood, Mr., 196 

 Smythe, Colonel, 22, 195 



