XVIU PEOCESS-BLOCKS AND OTHER ILLTJSTEATIVE FIGURES. 



Fig. Page 



1. Outline-map of part of Costa E,ica, sLowing the principal 



localities 104 



2. Diagrammatic section from the slopes of Barba across the San 



Jose Valley to the Oerro Oandelaria 114 



3. Section across the gorge of the Rio Virilla at El Brazil 119 



4. Section through the Rio Grande gorge at Cebadilla to the 



Aguacate Hills 122 



5. Diagrammatic section from the Grulf of Nicoya to the Avangares 



Mines 128 



1. Greological sketch-map of the neighbourhood of Gopeng 141 



2. Fault- face of limestone, forming a clift" on the eastern face of 



Gunong Tempurong, near Gopeng 144 



3. Diagrammatic section in Kinta Tin-mines 146 



4. Section at the Tekka Mine 149 



5. Old tree-trunk lying at the bottom of a cavity filled in with 



sandy clays, New Gopeng Mine 150 



1. Sketch-map and section illustrating the effect of the Glen- 



Creran Syncline and Glen-Orchy Anticline upon the recum- 

 bent folds of Ballachulish and Appin 165 



2. Geological map of Beinn Udlaidh 168 



3. Serial sections across Beinn Udlaidh 169' 



4. Alternative interpretations of the Beinn-Doirean inversion ... 176 



1. Sketch-map of the Llangollen district 184 



2. Map of the Morlas-Brook capture 190 



3. Sketch-map of the Lower Dee Valley ... 19S 



— Diagrammatic section of Pickett's-Lock Ballast-pit 214 



1. Section from Illshaw Heath through Pack wood to Wroxall ... 258 



2. Section from Mockley Wood to Rowington and Mousley End . 258 



3. Section from Oldberrow to Shrewley 258 



4. Section from near Spernall Park to Wolverton 259 



5. Section from Morton Bagot to Hampton-in-Arden 259 



6. Section along or near the Lapworth & Henley-in-Arden 



branch of the Great Western Railway 260 



7. Contour-map of the upper surface of the Arden Sandstone 



Group of Warwickshire 270 



1, Outline-map of Groby-Village Quarry 282 



2. [Diagram illustrating the ' tip ' of strata] 286 



— Map showing the localities where ' moorlog,' etc, was dredged . 325 

 1 & 2. Diagrammatic sections across Central Wales 338 



