w 



e & clay. 



/Hard grey clunoh. 



Vertical section's of strata in the Shafts op Bolsover Tunnel. 

 (From a drawing by Mr. B. Elliott Cooper.) 

 Shaft No. 2. 



Quart. Journ, Geol. Soc. Vol. LIT, PI. X. 



EB 



m 



^ 



^k 



tt 



Water Btruok. 

 •3, cii Water makiog 150O galloQB per hour. 



2000 gatloiiB per hour. 



2£ 



[Vertienl scale : 40 feet = l inch.] 



Section across the Alluvium of the Trent Valley. 

 {Heduced from a drawing by Mr. R, Elliott Cooper.) 



Loam and SUi 



Orauel Sand 



Olag and Qrauel 



[Horizontal scale : 192 feet = 1 inch; vertical scale : 06 feet=l inch.] 



