188 



Correspondence. 



remains of encrinites ; the second contains casts of various braclii- 

 opoda, often exceedingly beautiful, and the lowest is a hard impure 



Fig. 5. — Geological Sketch Map, from Fountains to Ripley. 



Explanation of Sketch Map. 



Mark of Out-crop 

 or Quarry. 



1. Thin-bedded Limestone. 



2. Thick-bedded ditto. 



3. Botryoidal ditto. 



4. Marl-slates. 



Magnesian Limestone. 

 Grits and flags. 

 Fossiliferous bed. 

 Arenaceous flags, etc. 



5. Red flags. 



6. Red and white grits. 



7. Encrinite flags. 

 Fossil bed. 

 Hard bed. 



10. Upper flags. 



11. Lower flags. 



