iv List of Woodcuts. 



Diagram of the Glacial Terraues at the Fork of the Yangma Valley . 20S 

 Sand and Clay Pocket, about 180 feet in diameter, in Mountain 



Limestone, near Longrake Mine, Halkin Mountain, Flintshire . 242 



Sand and Clay pit, Bwlch Farm, near Nannerch, Flintshire .... 242 

 Supposed general arrangement of Pocket, containing sand and clay 



in Mountain Limestone, Bwlch Farm, near Nannerch .... 24.3 



Clay Pocket, Pant-du, near Llanberris 245 



Sand and Clay Pocket, Caldon Hill Limestone Quarry, Weaver Hills 248 



Section of Weaver Hills, North Staffordshire 249 



White Clays, Sands, and Pebble-beds overlain by Glacial Till, Ribden 



Pit, Weaver Hills 250 



Section showing the general structure of the country ngar the 



Phosphate-bed, north-west of Llanfyllin 251 



Section of Strata at Cwmgwynnen Mine, north-east of Llanfyllin . . 252 



Diagrams of the north and south entrances to Kent's Cavern . . . 298 



Plan of the Coygan Cave near Laugharne, Carmarthenshire . . . 308 



Profile of Cliff, looking towards the mouth of Glen-car 345 



Land-slip at the Protestant's Rocks, on the south side of Glen-car, 



Sligo 346 



Section at Ingleton 348 



Section at Horton, in Ribblesdale . . . ' 348 



Section at Crummack ' 351 



Tarn Close Quarry in the Carboniferous Limestone, near Ulverstone 403 



Section of an Escarpment on the supposition that it is an old cliff . 485 

 Rough outline of the form of part of the Chalk-ridge in the Isle of 



Purbeck 486 



Section showing the relation of the Chalk-clifF and the Chalk-escarp- 

 ment in the Isle of Wight 489 



New species of Mollusca from the Caribean Miocene Deposits . . . 500 



Cliff at Pen Morfa, Great Orme's Head 534 



Section of Cliff, about twenty yards from its commencement at Pen 



Morfa 535 



Section from Afon Eden to Blaenau, five miles north-east from Dolgelly 537 



Section of Tern Valley 549 



Section across the Ouse Valley at Buckingham 564 



y 



MAP. 



Map of the General Glaciation of Ireland 234 



