PROCESS-BLOCKS AND OTHER ILLUSTRATIVE FIGURES. XIX 



Fig. Page 



14. Photograph showing the lowest bed of the Table-Eocks Sand- 



stone curled up and abutting against the Mussel- Band 547 



15. [Diagram illustrating the production of the ' stony ridges '] ... 548 



16. Photograph showing the direction of the thrust 549 



17. General Section from A to N 549 



1. Lophospira cxcavata, sp. nov 559 



2. Lophospira bicincta, var. scotica nov 564 



3. Lophospira bellicarinata, sp. nov 565 



4. Lophospira subglobosa, sp. nov 569 



1. Dentalium giganteum, Phillips 580 



2. Sketch of transverse section of the anterior end of Dentalium 



limatulum, Tate 582 



1. Semi-diagrammatic section from north to south, near Caerlleon. 600 



2. Semi-diagrammatic section from north to south, near C16g-y- 



fran 600 



3. Section from north to south, near Forest 614 



4. Section from north to south, near Nant-yr-eglwys 622 



5. Section from north to south, near Llanboidy 622 



6. Section east of Llanddowror 628 



7. Section west of Llanddowror 628 



1. Section along the Tarannon Eiver , 654 



2. Section in the railway -cut ting due north of Llawr-y-coed 672 



3. Section along the Gelli-dywyll stream 676 



4. Section along the Gelli stream 678 



5. Sketch-plan of the Dolgadfan locality 680 



6. Sketch-plan of the Pennantarea 686 



7. Longitudinal section across the Tarannon district 688 



8. Generalized vertical section of the strata in the Tarannon 



district 690 



" 



