X PROCESS-BLOCKS AND OTHER ILLUSTRATIVE FIGURES. 



Page 



Fig. 1. Map of the Oewkerne district, showing the localities 



where exposures of Inferior Oolite are observed 146 



2. Sequence of Inferior-Oolite deposits at Conegar Hill, 



Broad Windsor 153 



1. Topographical map of the neighbourhood of Ohellaston, 



showing the localities where alabaster, etc. has been 

 worked 176 



2. Mode of occurrence of alabaster pillars at Ohellaston ... 178 



3. Diagram of a typical pillar at Ohellaston 179 



4. Masses of white alabaster, with adherent green ' c;>p,' in 



red alabaster, Ohellaston 181 



5. Diagrammatic section showing the structure of the 



gypsum at Kirk by Thore Quarry 185 



6. Pillar of white gypsum in the Subwealden Mine ... 186 



7. Section showing the occurrence of -hard stone' (an- 



hydrite) at Fauld 194 



1. Diagram of a hypothetical Primitive Pelmatoporid 205 



2. Diagram of a hypothetical Primitive Kelestomine 207 



3. Diagram of an cecium and portions of six others to show 



how secondary tissue arises in the intercecial valleys... 208 



Figs. 4 & 5. Diagrams representing further development of secondary 



tissue in the intercecial vallevs 209 



Fig. 6. Diagram of the distal end of the cecium of a Pelmato- 

 porid 210 



7. Diagram of the distal end of an cecium of a hypothetical 



Primitive Kelestomine 212 



8. Diagram of Kelestoma gradatum, sp. nov 214 



9. Diagram of the distal end of the cecium of a hypothetical 



primitive Morphasmopora 214 



10. Diagram of an oecium of Morphasmopora brydonei 215 



11. Diagram of an cecium of Morphasmopora jukes-brovmei... 216 



12. Diagram of ancestrcecium of Morphasmopora jukes- 



brownei 217 



1. Geological sketch-map of the Welsh Borderland 2:22 



2. Temeside Shales in the old quarry north-north-west of 



New Invention 235 



