INDEX. 



103 



.obert, M., on extinct quadrupeds of Cus- 



sac/219 



occa di Ferro, shells in the tuffs of, 79 

 uOchester, indentations in the chalk fillec 



with sand, &c., near, 282 

 ocks, distinction between sedimentary 



and volcanic, 10, 352 

 primary, 10 



origin of the primary, 11, 363 



distinction between primary, second- 

 ary and tertiary, 10 



persistency of mineral character, 

 why apparently greatest in the older, 331 



older, why most consolidated, 334 



older, why most disturbed, 335 



secondary volcanic, of many different 

 ages, 335 



relative age of, how determined, 35 



proofs of. by superposition, 35 



proofs by included fragments of older 

 rocks, 36 



proofs of their contemporaneous ori- 

 gin derived from mineral characters, 37 



proofs from organic remains, 39 



volcanic of the Val di Noto, 63, 67 



grooved surface of, 147 



transportation of, by ice, 149 



identity of their mineral composition 

 no proof of contemporaneous origin, 

 161 



)derberg, crater of the, described, 198 

 >me, travertins of, 138 



hills of, capped by calcareous tufa, 

 138 



>nca, fossil shells found at see Table, 



Appendix I. 



>yat, ruins of Roman bridges and baths 



at, prove that no great changes have 



taken place since their erection, 269 



>zet, M., OQ the loess of the valley of the 



Rhine, 151 



inton, folding of the crag strata in the 



cliffs near see wood-cut No. 38, 178 



, Christopher's, alternations of coral and 

 volcanic substances in, 133 

 , Eustatia, tertiary formations in, 133 

 , Hospice, tertiary strata in the penin- 

 sula of, 135 



, Lawrence, Gulf of, changes which 

 would result in, on the filling up of the 

 Canadian lakes, 28 



Madeleine, near Nice, shells abundant 

 in the loamy strata of, 168 

 Michael's Mount, Cornwall, 371 

 Peter's Mount, Maestricht, fossils of, 

 325 



Remain, gypsum worked at, 233 

 Vincents, active volcanos in, 133 

 lisbury Craig, altered strata in, 369 

 n Giro, cave of, breccia containing bon e 

 of extinct quadrupeds in, 141 



San Giro, position of the cave of, see 



diagram No. 27, 141 

 San Feliu de Pallerols, deep ravine cut 



through lava near the town of, 189 

 San Quirico, hills of, their composition, 



159 

 Sand and conglomerate of the sub-Apen- 



nine strata described, 159 

 Santa Croce, Cape of, limestone resting 



on lava at, 68 

 Santa Madalena, section at the bridge of, 



186 

 Santa Margarita, size of the volcanic crater 



of, 187 

 Sardinian volcanos, their age uncertain, 



193 



rest on a tertiary formation, 193 



Sasso, Dr., on the tertiary strata of Genoa, 



166 



on the fossil shells of Albenga, 167 



Saucats, fresh-water limestone of, 207 

 Savona, tertiary strata of see wood-cut 



No. 55, 166, 222 

 Sciacca, volcanic island of, 69, 71 

 Scoresby, Capt., on the transportation of 



rocks by icebergs, 150 

 Scotland, parallel grooves formed in the 



beds of torrents in, 147 

 granite veins of see wood-cuts 



Nos. 85 and 86, 354 

 Scrope, Mr. G. P., on the volcanic district 



of Naples, 125 



on the extinct volcanos of the Rhine, 

 197, 201 



on the hill of Gergovia, 258 

 on Mont Dor, 261 



on the excavation of lava by the 

 river Sioule, 265 



on alluviums under lava at differ- 

 ent elevations in Auvergne, 267 



Sea-cliffs, successive elevations proved by 

 see wood-cut No. 24, 111 



manner in which the sea destroys 

 successive ranges of, 111, 292 



distinct ranges of ancient, in the 

 Morea, 113 



found elevated to great heights in 



Peru, 130 



Seaford, waste of the chalk cliffs at, 311 

 Secondary rocks, 14 



of the Weald valley divisible^ into 

 five groups, 286 



their rise and degradation gradual, 



enumeration of the principal groups 

 of, 324 



no species common to the tertiary 

 and, 327 



circumstances under which they ori- 

 ginated, 23, 329 



why more consolidated, 334 



why more disturbed, 335 



