102 



INDEX, 



Prevost, M. Constant, on the tertiary strata 



of Vienna, 21, 212 

 tabular view of his arrangement of 



the strata of the Paris basin see wood- 

 cut Xo. 59, 243 

 on the alternation of the calcaire 



grossier, and siliceous limestone, 24G. 



243 

 . on the manner in \vhich the mammi- 



ferous remains may have been preserved 



in the Paris gypsum, 252 

 on the alternation of strata with and 



without organic remains. 254 

 Primary, on the rocks usually termed, 10, 



352" 



their relation to volcanic and sedi- 

 mentary formations, 352 



divisible into two groups, the strati- 

 fied and unstratified, 353 



on the stratified rocks called, 12, 365 



the term why faulty, 374 



strata, how far entitled to the appel- 

 lation, 377 



Primitive, term now abandoned, 13 



Primosole, termination of the Val di Noto, 

 limestone at, 75 



view of Etna from see diagram 



No. 11, 75 



Procida. island of, would resemble Ischia 

 if raised, 127 



Pulo Nius, fossil shells of recent species 

 found in the island of, 134 



Pulvermaar, description of the, 197 



Punto del Nasone on Somma, dikes or 

 veins of lava seen at see wood-cut No. 

 25, 122 



Punto di Guimento, veins of lava at see 

 wood-cut No. 20, 91 



Purace, extinct volcano of, 252 



Pusanibio river, sulphuric and muriatic 

 acids, and oxide of iron in the waters of 

 the, 252 



Puy Arzet, chalk with conformable beds of 

 full 1 in the hill called, 207 



Puy de Come, ravine excavated through 

 the lava of the, 2G4 



Puy de Jussat, quartzose grits of, 229 



Puv de Marmont. alternation of volcanic 

 tuff and fresh-water marl in the, 258 



Puy de Pariou. 2'iS 



Puy Rouge, ravine cut through the lava 

 of the, 205 



I'uy de Tartaret, 2G4 



Puy en Velav, bones of extinct quadru- 

 peds in alluvium under lava near, 219 



' fresh-water formation of, 2-35 



Pu/zuoli, inland cliff near, will be de- 

 stroyed, 112 



no great wave caused by the rise of 



the coa>t ne'ir, in 1538, 128 



Pyrenees, tertiary strata at the eastern ex- 

 tremity of the, 170 



Pyrenees, tertiary formations between the 



basin of the Gironde and the, 206 

 : their relative age, 341 



tertiary strata abutting against verti- 

 cal mica-schist at the eastern end of 

 the, 348 



lamination of clay-slate in the see 



wood-cut No. 89, 366 



Quartz, compact, whence derived, 373 

 Quorra, or Niger, delta of the, 329 



Radicofani, sub-Apcnnine marls capped 

 by basalt at, 159 



age of the volcanic rocks of, 183 



Radusa, fossil fish found in great abun- 

 dance at, 67 



Ramond. M.. on alluuums of Auvergne, 

 267 



Ratnsgate, recent deposits in the cliffs 

 near, 182 



Ravines excavated through the lavas of 

 Auvergne, 264, 265 



Recent formations, description of. 52 



form, a common point of departure 



in all countries, 53 



\\hy first considered, 62 



Recent and Tertiary formations, synoptical 



table of, 61 

 Red marl and sandstone of Auvergne like 



' new red sand-tone,' 229, 333 

 Red marl, supposed universality of, 333 

 Red Sea, and Mediterranean, distinct as- 

 semblages of species found in the, 41, 

 205 



tertiary strata found on its western 



borders. 135 



list of fossil shells from see Appen- 

 dix II.. 57 



Rennes, tertiary strata near, 276 

 Rhine, lower, volcanos of the, 193 

 map of the volcanic district of the,l 91 



age of the volcanic rocks of the, un- 

 certain, 199 



origin of the trass of the. 197 



ancient alluviums of the, 20U 



Rhone, delta of. in lake of Geneva, 27 

 shells drifted from the Alps to the 



Mediterranean by the, 48 

 Riccioli, Signior. tu>k of the mammoth 



from the Roman travertin shown to thu 



author by, 138 

 Rimao. valley of. lines of ancient sea-cliffs 



in, 130 

 Ripple marks formed by the wind on the 



(bines near Calais see wood-cut No. 



36, 176 

 Risso, M.. on the fo.-sil shells of Groseil, 



near Nice. 135 

 on the fossil shells of St. Madeleine, 



near Nice, 168 

 Rivers, difference in the sediment of, 40 



