LIST OF PLATES. 



PLATES PASE 



v T. II. Sketches to illustrate Mr. A. B.Wynne's paper on Denudation '3 



^ III. IV. Cochliodonts 59 



^ V. Acanthopkolis horridus, Chalk Marl, Folkestone . , . , 65 



», VI. Cycadean Fruits from the Secondary Rocks 101 



V VII. Lower Silurian Graptolites 113 



V VIII. Sqiijoiodon Wilkinsonii ; Aroideous Fruit from the Stones- 



field Slate 146 



- IX. Cycadean stem from Leighton Buzzard 199 



»* X. The Terraces on the Fraser River 206 



"^ XI. Graptolites from Dumfriesshire 256 



^ XII. Glacial action near Llandudno ; New Trilobites from North 



Wales 290 



^ XIII. Pholas-borings near Torquay, Devonshire 295 



N^ XIV. *SV/rm^o^A?/m from North America and Belgium . ... 311 



v/ XV. Banded and Brecciated Concretions 337 



^ XVI. Recent and Carboniferous Chitonidse 340 



* XVII. English and Canadian Palaeozoic Insect-remains .... 388 



V XVIII. Railway Geology from Exeter to Newton-Bushell .... 390 



V XIX. New species of Brachiopoda from Upware 454 



^ XX. Rock Veins 481 



XXI. Goniocypoda Edwardsi, H. Woodward 529 



„ Necrozius Bowerbankii, A. Milne Edwards 531 



V 



LIST OF WOODCUTS. 



Section across the Eglwysegle Rocks, near Tan-y-Castell .... 12 

 Asaphus Corndensis, Ogygia scutatrix, Asaphus tyrannus, Ogygia 



peltata 15 



Section from Stevenage Cutting to Hitchin Station 38 



Section from Milton, near Gravesend, to Ratley HiU Wood .... 39 



Section on the River Indus, near Sukkur Pass, Upper Scinde ... 43 



Fasnet Rock and Light-house, coast of Cork 89 



Diagram to show the relative ages of the Boulder-clays in the Eastern 



Counties 98 



Diagram-section of the Thames Valley 100 



Diagram of Head-plates of Cheirolepis 148, 149 



Diagram to illustrate the Geology of South Bedfordshire .... 154 



Section of NuUaberg, in Wermland, Sweden 161 



Faults in Drift-sand at Rochdale 183 



Section of about eight feet of the upper part of Uphall Brick-field at 



Ilford 194 



