INDEX. 



95 



Heidelberg, shells found in the loess at, 



152 



loess and gravel alternating at, 153 



granites of different ages near, 357 



lenslow, Professor, on the changes caused 



by a volcanic dike in Anglesea, 368 

 flibbert, Dr., on the extinct volcanos of 



the Rhine, 197, 201 



on the loess of the valley of the 



Rhine, 151 



on the mammiferous remains of 



Velay, 219 



lighbeach, in Essex, height of the Lon- 

 don clay at, 312 



loffmann, Professor, his examination of 

 Sicily, 63 



on the limestone of Capo Santa Croce, 

 68 



on the new island of Sciacca, 71 



on the Val del Bove, 88 



. on cave deposits in Sicily, 139, 140, 

 141 



Honduras, recent strata of the, 133 



rlornblende schist, altered clay or shale, 

 373 



Corner, Mr. Leonard, his map of the vol- 

 canic district of the Eifel and Lower 

 Rhine see wood-cut No. 48, 194 



on the geology of the Lower Rhine 



and Eifel, 201 



rlugi, M., on secondary strata altered into 

 gneiss in the Alps, 372 



on modern granite in the Alps, 358 



Buman remains now becoming imbedded 

 in osseous breccias in the Morea, 144 



Humboldt, on the depression of a large 

 part of Asia, below the level of the sea, 

 29 



ETundsruck, beds and veins of quartz found 

 in the mountains of the, 201 



Hungary, tertiary formations of, 212 



age of the tertiary strata of, 215 



volcanic rocks of, 222 



age of the igneous rocks of, 223 



Hutton, his opinion as to altered sedimen- 

 tary rocks, 382 



Huttonian hypothesis of the origin of 

 gneiss, 366 



Hypogene, term proposed as a substitute 

 for primary, 374 



formations, no order of succession 



in, 375 



rocks, their identity of character in 



distant regions, 376 



produced in all ages in equal quan- 

 tities, 377 



their relative age, 377 



volume of, formed since the Eocene 



period, 381 



Icebergs, rocks transported by, deposited 

 wherever they are dissolved, 149, 150 



Idienne, volcanic mountain of, 252 

 Indusial limestone of Auvergne, 232 

 Inkpen Hill, the highest point of the chalk 



in England, 314 

 Inland cliff near Dax see wood-cut No. 



53, 209 

 Inland cliffs on East side of Val di Noto, 



111 



Insects, fossil, of Aix, 277 

 Ischia, volcanic conglomerates now in 



progress on the shores of, 73 

 fossil shells of recent species found 



at great heights in, 126 

 external configuration of, how caused, 



127 

 list of fossil shells fromAppendix 



II., 57 

 Isle of Bourbon, a volcanic eruption every 



two years in, 363 

 Isle of Cyclops, in the bay of Trezza, view 



of see wood-cut No. 14, 79 



its height, &c., 79 



stratified marl resting on columnar 



lava in the see wood-cut No. 14, 79 

 contortions in the newer Pliocene, 



strata of see wood-cut No. 15, 80 

 divided into two parts by a great 



fissure, 80 

 .1 i newer Pliocene strata invaded by 



lava in see wood-cut No. 16, 81 

 lavas of, not currents from Etna, 81 

 Isle of Purbeck, traversed by a line of ver- 

 tical or inclined strata, 315 

 Isle of Wight, geology of the, 18 

 fall of one of the Needles of the, into 



the sea in 1772, 181 

 fresh-water strata of the, 280 



mammiferous remains of the, 281, 



317 



vertical strata of the, 315 



Italyj tertiary strata of, 18 



age of the volcanic rocks of, 183 



number of living species in the fossil 



shells of see Appendix L, 47 

 ... , number of those common to Sicily 



and, ib. 47 ; 



number common to the Crag and, 



ib. 47 



number common to Sicily, the 



and, ib. 47 



Jack, Dr., on the geology of the island of 



Pulo Nias, 134 

 Jamaica, fossil shells of recent species 



from, in the British Museum, 133 

 Java, subsidence of the volcano of Papan- 



dayang, in the island of, 96 

 vegetation destroyed by hot sulphuric 



water from a mountain in, 252 

 Jobert, M., on the extinct quadrupeds of 



Mont Perrier, 218 

 on the hill of Gergovia, 258 



