PROCESS-BLOCKS AND OTHER ILLUSTRATIVE FIGURES, 

 RESIDES THOSE IN THE PLATES. 



1 



Fig. Page 

 Map to illustrate the Cornish Earthquakes of March 29th to 

 April 2nd, 1898 2 



{Diagrammatic section across Scarlet Point west of the Stack, 

 showing the probable relation of the Volcanic Series to the 

 Carboniferous Limestone 14 



{Section across the foreshore on the northern side of Close-ny- 

 Ohollagh Point, Poolvash, showing the rucking-up of the 

 Upper Limestone beneath the Volcanic Series 16 



{Section across the foreshore, 250 yards south of Close-ny- 

 Chollagh Point, showing the sliding forward and breaking-up 

 of bedded calcareous ash and impure limestone, with unbroken 

 beds below 18 



Diagram illustrating the supposed general result of earth- 

 movement in the Volcanic Series east of Cromwell's Walk : 

 a disrupted anticline of rigid lava pushed northward along a 

 thrust-plane 19 



1. Sketch-map of a portion of Somaliland 26 



f Section across a portion of Somaliland, from the coast at 



*■ \ Berbera to God-la- Yareh 27 



3. Turbinacis erythrceensis, gen. et sp. nov 39 



4. Abactinal surface of Pseudodiadema somaliense, sp. nov 41 



5. Part of a specimen of Pseudodiadema somaliense 41 



1-3. Palceoneilo carbonifera, sp. nov 48 



Topographical Map of the Rhayader District , 70 



1. Section from Gwastaden to Rhayader 75 



f Section through Woodlands from Gwastaden Cairn to the 

 ^'\ Cambrian Railway-line 85 



3. Section from Gwastaden to Rhyd-hir Brook 85 



4. Section from Castle Hill to Beili-newadd 88 



5. Section from Vaynor Farm to beyond Cwm Barn 88 



