XIV PROCESS-BLOCKS AND OTHER ILLUSTRATIVE FIGURES. 



Fig. Page 

 2. Section in the Drift at Peartree Hill (Oxfordshire) 128 



Oral aspect of the mandible of Ptychodus deourrens, restored . 134 



1 . Geological map of Middle Hope or Woodspring 140 



2. Westernmost exposure of the volcanic series on the shore, at 



Middle Hope or Woodspring 142 



3. Sketch illustrating the details of the above exposure 143 



4. Upper part of the volcanic series at Woodspring, second 



exposure 144 



1." Lenticles of lava and tuff making up the ' main sheet of 



basalt' [at Spring Cove] 159 



2. Oval, slaggy lumps of basalt-lava surrounded by fluxion-tuff . 162 



3. Lump of basalt-lava, enclosing a lump of tuff and of limestone, 



and itself enclosed in coarse fluxion-agglomerate 162 



4. Band of coarse agglomerate in basalt-lava 163 



5. Junction of basalt and an included mass of limestone 165 



6. Included mass of limestone in basalt 165 



7. Limestone included in basalt 166 



8. Portion of an included lump of limestone in basalt 167 



1 . Black Shales of the Bhaitic, resting unconformably upon Old 



Bed Sandstone, west of Chipping-Sodbury railway-station . 196 



2. Section from Lilliput Bridge to near Chipping-Sodbury railway- 



station 198 



3. Diagram of Plicatula cloacina, sp. nov 202 



4. Diagram of Cardinia concinna aff. C. regularis 204 



5. Pleurophorus clongatus, Moore 205 



6. Cardium cloacinum, Qu 207 



1. Becord of the earthquake of March 24th, 1903, registered at 



Birmingham by an Omori horizontal pendulum 220 



2. Map of the Derby earthquake of May 3rd, 1903 230 



1. Becord of the earthquake of June 19th, 1903, registered at 



Birmingham by an Omori horizontal pendulum 236 



2. Map illustrating the area affected by after-shock /'of June 19th, 



1903 ' 239 



1. Coast-cliffs of the Tekfur Dagh, northern shore of the Sea of 



Marmora 248 



