INDEX 



327 



Oppel, Jurassic zones, 274 



Ordovician sediments, changes in 

 thickness, 43 



Oxford and Geology, 219-256 ; Steno, 

 222 ; Plot, 228 ; Llwyd, 241 ; Kidd, 

 242; William Smith, 243; Buck- 

 land, 244; Agassiz, 246; Lyell, 

 249; Phillips, 251; Darwin, 251; 

 Prestwich, 256; Green, 256 



PACIFIC, the primitive ocean, 50 



Paleemon, 192 



Palaemonetes, 192 



Paley, 254 



Pallisey, 221, 263 



Paludina, 183 ; transformation of, 



207 ; in lake Tanganyika, 214 

 Pangbourne, 147 

 Paramelania, 209 

 Paramoudra, 136 

 Pear-shaped earth, 47, 54 

 Penck, 17 

 Peneus, 193 

 Penokee series, 29 

 Phillips, Prof. J., 251 

 Piiolas rivicola, 175 

 Pisidium, 181 

 Plastic force, 235 

 Plot, 227 

 Polynesians, 114 

 Politic lakes, 204 



Pressure, effects on fusion-point, 11 

 Prestwich, Sir J., 18, 250 

 Pristiofiraptus pala, 283 

 Przibram mines, 20 

 Purbeck and Weald, 200 

 Pyrgulifera, 202 



QUOY AND GAIMAKD, limit of coral 

 growth, 91 



RADIUM, relation to geothermic 



gradient, 63 



Eamsden, surface tension, 152 

 Eeef-rock of Funafuti, chemical com- 

 position, 123 



Eenard, on flint, 165 



Eeptiles as agents of dispersal, 183, 



211 

 Eichthofen, Baron von, coral reefs of 



Tyrol, 131 

 Eigidity of earth, 16 

 Eiver water, composition of, 22 ; 



analysis of, 171 

 Eotifers, dispersal of, 188 

 Euedemann, E., Graptolite zones, 276 ; 



structure of graptolites, 282 

 Eupert Jones, on flint, 165 



ST. MAKGABET'S BAY, Dover, 154 



Sand, coral, 103 



Sarmatian sea, 204 



Schubert, form of the earth, 46 



Scleroplegma, 145 



Scorpion men, 319 



Sea water, analysis of, 171 



Sediment, rate of deposition, 37 



Sedimentation, area of maximum, 34 



Seismic waves, 314 



Semper, animal life, 173 



Seward, A. C., 273 



Silica, in sea water, 155 ; source of, 



155 ; amount of, in sponges, 156 ; 



concentration of, 157 

 Silurian, changes in thickness, 43 

 Skeats, Dr. E. W. ; Funafuti, 123; 



dolomitisation, 130 ; Tyrol, 132 

 Smith, George, deluge tablets, 309 

 Smith, William, 2 ; and Oxford, 243 ; 



life of, 258 ; fossils as a means of 



identification, 263 

 Solvent power of superheated water, 



23 



Spatha, 204 



j Species, persistent, 26, 218 

 ! Spekia, 210 

 i Spencer, Herbert, 265 

 I Spirula, 280 



Sponge spicules, casts in chalk, 146 

 Sponges, in flints, 141 

 Stability of freshwater animals, 218 

 Stable and labile organisms, 218, 287 



