PROCESS-BLOCKS AND OTHER ILLUSTRATIVE FIGURES. XV11 



Fig. Page 



6. Section through Allt-y-bont Hill 88 



7. Section from Cwm-bach to Bwlch Coch 88 



8. Section along Allt Goch towards Ty'n-y-graig 92 



9. Section along the Nant-y-Gro 92 



lf . f Section across Caban Coch, from near Tv'n-y-graig to the 



[ Abernant 104 



11. Section through Corn Gafallt Hill, from the Dulas to the Elan. 104 



12. Section through Corn Gafallt Hill 106 



13. Section from Pen -y-rhiw Cottage to Fron-dorddu Farm 106 



-. f Section above Dol-Ifor Farm, from Allt-y-bont to the old 

 14 '| quarry 106 



15. Section from Allt-y-bont Hill to Caban Coch 110 



16. Section from Corn Gafallt to Careg Bica 110' 



, - f Diagrammatic section from Cwm Barn to Caban Coch, elimi- 

 'I nating faults, etc 116 



18. Section from Gyrn Hill to Allt Goch 116 



f Diagrammatic section from Cwm Barn to Caban Coch, showing 



19. j the relationships of the rocks of the Caban and Rhayader 



Groups to those of the Gwastaden Group 122 



20a&20b. Climacograptus parvulus, sp. nov 132' 



21. Diplograptus magnus, sp. nov 133 



22a&22b. Climacograptus extremus, sp. nor 134 



, f Section across the northern extremity of Hangman's Hill and 



1 " 1 SwinyardHill 141 



2. Section across the Herefordshire Beacon and Tinker's Hill ... 141 



3. Section across the Herefordshire Beacon and Broad Down 141 



4. Former quarry at Wind's Point 144 



5. Section of the range along the line of the Malvern Tunnel ,.. 149 



R f Section across the Malvern B.ange immediately north of the 

 0, 1 Dingle 151 



7 f Section in the old quarry, north of St. Edward's Orphanage, 

 tm \ WestMalvern 151 



o f Diagram showing the structure of the small quarry near the 

 e, [ Lamb Inn, West Malvern 153 



q f Diagrammatic section through the small quarry near the Lamb 

 •\ Inn, West Malvern 153 



10. Section across North Hill and High Wood 154 



11. Section across Cowleigh Park and High Wood 15T 



VOL. LVI. b 



