634 



Index. 



PER 



Permian rocks, 306-308 



shells, 147 



sun-cracks and rain-pittings, 

 146 



Phillips, Professor, on denudation 



of Holderness, 484 

 Physical geography and geology, 



relations of, 2 



Cambrian epoch, &c., 67 



Lower Silurian, 77-81, 86- 



87 



Carboniferous, 133-138 



Lower Oolites, 195-197 



old continental phase of, 



157 

 Purbeck and Wealden epoch, 



202, 208-21 1 

 Physiography before glacial epoch, 



503 



Pictish Gael, 582 

 Pipe-clays, Eocene, 609 

 Plains of marine denudation, 341- 



343, 496-499 

 Plants and lignite, Inferior Oolite 



Sands, 192 



Playfair, on Button's generaliza- 

 tions, 280 



lakes, 437 



Pliny, 277 



Pliocene strata, 270-276 



Plot, Dr., geological ideas of, 277 



Pont-y-gromlech, roche moutonnee 



and blocs perches, 427 

 Portland beds, and fossils, 186, 



190, 191, 202-206 

 Post-glacial rivers, 531 

 Pre-glacial valleys and coal, 531 

 Prestwich, Professor, on Thanet 



sand, 239 



Bristol coal-field, 597 



Brixham cave, 479, 480 



flint implements and 



mammoth, 538 

 fossils of Crag, 271, 275, 



357 



Oldhaven beds, 244 



shells between boulder- 

 clays, 413 

 tertiary outliers, North 



Downs, 345 



Rrv 



Prestwich, Professor, on Thames 



at Kingston, 557, 558 

 Price, Williams Mr., on duration 



of coal, 604 

 Primitive strata, so-called, 43-45 



old theory of, 86 



Pseudomorphs of salt crystals, and 



sun-cracks, 160 

 Purbeck and Wealden series, 201- 



211, 310 



beds, fossils of, 203-205 



Isle, disturbance of strata, 347 



limestone, 187, 202 



marble, 203 



outliers of, Buckinghamshire, 



&c., 209 

 Purfield beds, 223 



"DACES of men in Britain, 579- 

 JLt 589 



Kadiation of heat and shrinkage 



of earth's crust, 45, 46, 49 

 Kainand rivers, Wealden, 341-344 

 Rainfalls, Britain, 492-494 

 Rathlin and glacier-ice, 399 

 Kay, on degradation of land, 10 

 Reculvers, denudation at, 485 

 Red chalk, 213 



Reid, Mr., on denudation of 

 Cromer coast, 484 



Crag and fossils of, 270, 271 



rocks and lakes, 61 



Rhaetic beds, and fossils of, 158- 

 165, 309 



Brora, 198 



Rhine, 499, 526, 543 

 Rhone, delta of, 426 



glacier, thickness of, 440 

 Ribble, 522 



Fells near, glacial striations, 

 399 



north of, shell-beds, 414 

 Riley, Dr., and Stutchbury, fossils 



in Magnesian conglomerate 153 

 -155 



Rivers and valleys, geological 

 dates of, 496-529 



and gravels, 530, 536-542 



areas of drainage, 584 



