PROCESS-BLOCKS AND OTHER ILLUSTRATIVE EIGURES 

 BESIDES THOSE IN THE PLATES. 



Fig. Page 

 Map of Rotuma Island 3 



1-3. Plan and sections of An Mafiri Cave 8 



1 . Plan of Eeef -outcrops in the Chimes District 82 



2. Upthrow-fault in the Crown Eeef Mine 83 



/Section through the Witwatersrand Beds, at the New Eand 



* \ Mines borehole 85 



4. Eeversed fault in the Witwatersrand Mine 96 



K r Eeversed fault by the Great Simmer Dyke, in the Eose Deep, 

 l^ Witwatersrand 97 



6. Eeversed fault in the Crown Deep Mine 98 



1. Diagram [of pyromeride] 108 



2,3. Pyromerides from Conway Mountain 112 



4. Diagram showing the relation of a nodule to flow-brecciatiou . 113 



f- f Diagram of fragment [of pyromeride] showing growth normal 



* \ to its sides 115 



6-8. Pyromerides from Boulay Bay 117 



-| /Section of valley between Cae Grwyn Cave and Graig Tre- 

 ■ \ meirchion 121 



2. Plan of Ty Newydd Caves 124 



3. Section in the Eastern Cave [Ty Newydd] 125 



4. Section X in the Western Cave [Ty Newydd] 129 



1 /Section of Heath Hill, from near Kiln Point through Seal 

 ^•1 Hole [Lambayl.] 137 



2. Microscope- section of Conglomerate from Xiln Point 138 



3. Microscope-section of vesicular andesite from Freshwater Bay. 144 



Microscope-section of chloritoid from Friar Glen Burn (Ban- 

 cardineshire) 1 54 



1. Section at Warsop Colliery Junction ,.. 160 



