750 



GENEEAL INDEX. 



Bio de Janeiro, sketch-map of part of 



the province of, 458. 

 Eio Pardo, 471. 



River-origin of the Gravels of Ardtun 



and Carsaig, 284. 

 Eoberts, Mr. T., on the Correlation of 



the Upper Jurassic rocks of the 



Swiss Jura with those of England, 



229. 

 Roche, 236. 



Rock, Coonibe, and Dry Chalk valleys, 



on the origin of, 364. 

 Rocks of Brittany, structures and 



relations of, 301. 

 , igneous, on the alleged conver- 

 sion of crystalline schists into, in 



County Galway, 517. 



of Sark, Herm, and Jethou, 322. 



of the Essex Drift, 351. 



of the Malvern Hills, 481. 



• , Upper Jurassic, of the Swiss 



Jura, correlation of, with those of 



England, 229. 

 Roger Mine at Dukinfield, grooves 



and quartzite boulders in the, 599. 

 Roscoff, older rocks of the district of, 



314 ; gneisses of, 314 ; view of low 



cliff at, 314 ; granite near, 316 ; 



amphibolite of, 317. 

 Rother, section across the valley of 



the, 640. 



Rotokanapanapa, mud-volcanoes of, 

 174. 



Rotomahana, explosion of, 181, 182 ; 



effects of eruption upon, 183. 

 , Lake, 179 ; disappearance of, 



177. 



, Terraces of, 165. 



Rotomakiriri, Lake, disappearance of, 

 177. 



Rotorua, hot springs of, 181. 



Rowe, Rev. A. W., on the Rocks of 



the Essex Drift, 351. 

 Roydon, Totternhoe Stone near, 558. 

 Ruapehu, 178, 181, 182. 

 Rutley, Mr. F., on the Rocks of the 



Malvern Hills, 481. 



St. Anne's Hill, section from St. 



George's Hill to, 453. 

 St.-Asaph Drift of the Vale of Clwvd, 



79. 



, fossils of the Drifts of, 89, 93- 



97. 



, section in the east bank of the 



Elwy below the Mount, 81. 



St. George, section in quarry near the 

 village of, 85. 



St. George's Hill, section from, to St. 

 Anne's Hill, 453. 



St. Imier, 242, 247, 248. 



St. Ursanne, 238. 



Ste. Croix, 243, 244, 248. > 



Salcombe, section of cliff opposite 

 Old Castle near, 729. 



estuary, boundary of slaty and 



metamorphic series near, 717; in- 

 terbanded series of, 727 ; chlorite- 

 schist of, 728 ; section across eastern 

 arm of, 732. 



Salenia tertiaria, 412. 



Sandringham, Gault at, 552 ; Tottern- 

 hoe Stone near, 559. 



Sandstones, fragments of, in the Essex 

 Drifts, 360. 



and conglomerates of the Corrego 



do Quartel, 462. 



Sao Paulo, sketch-map of part of the 

 province of, 458 ; Upper Palaeozoic 

 deposits in, 461. 



Sark, map of, 323 ; rocks of, 322 ; 

 hornblende-schist of, 324; Creux- 

 Harbour gneiss of, 326; granitic 

 rock of, 328, 333, 334 ; veins and 

 dykes in, 332. 



Sarsens, distribution of the, 380. 



Saunton Down, cliff of consolidated 

 sand at, 661 ; boulder of grey por- 

 phyry at base of cliff south of, 665 ; 

 boulder of red granite in ancient 

 beach, south of, 666. 



Scaldicetus, 14. 



" Schillerization," 492. 

 Schist, mica-, formed from felsite, in 

 Raggedstone Hill, 530. 



, Piedmontite-, occurrence of, in 



Japan, 474. 



Schists, crystalline, fragments of, in 

 the Essex Drifts, 359, alleged con- 

 version of, into igneous rocks, in 

 County Galway, 517 ; of the Mal- 

 vern Hills, 525. 



, injection-, in the Malvern Hills, 



532 



_ of the He de Groix, 302. 



of the Malvern Hills, diorites in 



the, 526 ; granite in the, 526 ; fel- 

 site in the, 527. 



, simple, of the Malvern Hills, 



528. 



Schistose rocks, plan of vein-structure 

 in, 535. 



Schistosity, period of, in the rocks of 



the Malverns, 535. 

 Schizoporella cinctipora,Ya,r. per sonata, 



67. 



circinata, 64. 



clavula, 65. 



conservata, 65. 



cribrilifera, 65. 



hyalina, 68. 



obliqua, 66. 



