Yards 



Chalk 120 



Golt 50 



Sand, of Bedfordshire 10 or 20 



Northampton lime and Port- 

 land limes lying in several 

 strata 100 



Lyas strata 70 or 100 



Sand, of Newark about 30 



Red ClayofTuxford 100 



Sherewood Forest, pebbles and 



gravel 50 unequal 



Yery fine white sand uncertain 



Roch Abbey and Brotherton 



limes 100 



Coal strata of Yorkshire l ... 



Farey, in communicating this Table, 

 remarked that the " account of the strata 

 imperfect as it is, shews that Mr Michell 

 was acquainted with the principal features 

 of the south of England strata, at an 

 earlier period than anything that has been 

 published on the subject." He adds as 



1 The Northampton limestone belongs to the 

 Inferior Oolites, and the Portland limestone to the 

 Upper Oolites ; they both lie above the Lias as shown 

 in the Table. The Keuper and Bunter divisions 

 of the Trias are here correctly placed between the 

 Lias and the Permian Magnesian Limestone. 



66 



