G46 



EDWARD HULL ON THE CLASSIFICATION 



Table III. — Representat 





Stages. 



England and Wales. 



Ii 



North. 



South. 



North. 



( 



K 

 W < 



Oh 



G. 



F. 



Upper Coal-measures of 

 Manchester, &c, Staf- 

 fordshire, Denbigh- 

 shire. 



Middle Coal-measures 

 with thick coal-seams 

 &c, Lancashire, York- 

 shire, Derbyshire, &c. 



Generally absent 

 (through denudation). 



Middle Coal-measures 

 of South Wales and 

 Somersetshire, &c. 



Absent (through den 

 dation). 



Coal-Island Coal-fie] 

 co. Tyrone. 



w 

 J 1 



o 



E. 



D. 

 C. 



" Gannister Beds," or 

 Lower Coal-measures. 



Millstone Grit series, 

 Lancashire, York- 

 shire, Derbyshire, &c. 



Yoredale series, or Up- 

 per Limestone shale. 

 " Upper Bernician 

 beds" (Lebour). 



Lower Coal-measures, 

 with ironstones and 

 thin coals. 



Millstone Grit, or 

 " Farewell Bock." 



Upper Limestone shale 

 (thin). 



Lower Coal-measures 

 Drumglas (Tyron< 

 coal-fields of Lou 

 Allen (co. Leitrim). 



Millstone Grit of Fe 

 managh, Sligo, & 

 (Cuilcagh). 



Ironstone shales 

 Lough Allen, also 

 Drumglas (co.Tyron 



Lower. 



B. 

 A. 



" Mountain Limestone " 

 of Derbyshire, " Scaur 

 or Scar " Limestone 

 (Sedgwick). 



"Tuedian Group" (Tate), 

 often absent in N. 

 Lancashire &c. 



Carboniferous Limestone 

 of Cheddar, the Wye, 

 Avon, and S. Wales, 

 &c. 



Lower Limestone shale 

 (thin). 



Carboniferous Limesto 

 in three divisior 

 Ballycastle Coal-fie] 

 co. Antrim (in part} 



Calciferous Sandstoi 

 series or Lower Ca 

 boniferous Grits. 



