﻿XVI PROCESS-BLOCKS AXD OTHER ILLUSTRATIVE FiaURES. 



Fig. Page 



11. Diaj^rammatic section of the glacial beds in a west-and-east- 



direction, from Port Germein to Mount Grainger 256' 



12. Diagrammatic section of the glacial beds in a south-and-north 



direction, from the Yunta ranges to Oopina 257 



1. Geological sketch-map of the St. Dayid's-Head area 274 



2. Diagram ilhistrating the chemical relations of the various 



types of the St. David's Head ' rock-series ' 291 



1. Sketch-map of the stratigraphy of Colousay and Oronsay 29S 



2. Diagram ilhistrating the general increase in the second [earth-] 



movement [in Colonsay] from west to east 301 



3. Section on the coast, north of Port-na-Cuilce 302 



4. Section on the shore, south-east of Eilean Dubh and north of 



Port-na-Cuilce 303 



5. Margin of lamprophvre in phyJlite, on the coast north of 



XiioranBay .". 303 



6. Lamprophyre-dyke on the shore, north of Port-au-Obain 304 



7. Sketch-map of the Kiloran syenite-intrusion 305 



8. Margin of an east-and-west vogesite-dyke north of Port-na- 



Cuiice 307 



9. Sketch-map showing the strike and dip of the axial 23]anes of the 



secondary folds and of the strain-slip cleavage in Colonsay 

 and Oronsay 310 



— Map showing the relation of the Wey to the Blackwater 320 



— Sketch-map of the Wootton region [Oxfordshire] 336 



1. Eestoration of the hinder portion of the palatal aspect of 



Mctriorhynchus hrachyrhynchus 352 



2. Sections of the nasal canals of Metriorhynchus hracliyrliynclms. 354 



1, Map of the Porth-clais area 378 



2. Cambrian conglomerate involved in a basic intrusion, west of 



Carn-arwig, Eamsey Sound 381 



1. Wolfram- deposit in high-level wash, Buttern Hill, north-west 



of Altarnun (Cornwall) 388 



2. Stream-tin workings in Kenton Marsh, north-west of Buttern 



Hill (Cornwall) 392 



1. Plan showing the positions on the shore of the areas of Chalk 



at Trimingham 402 



2. Section presented by the North Bluff (Trimingham) in 1904 ... 407 



