BETWEEN THE TYNE AND THE WANSBECK 87 



water-partings between neighbouring drainage systems. One 

 is traceable through Bolam, Whalton, Saltwick, and Bellasis to 

 Catraw, and evidently parted the "Wansbeck" waters from 

 those of the "Blyth"; another, coinciding in general direction 

 with the strike of the rocks, passes through Harlow Hill, 

 Heddon Laws, Callerton, Dinnington, Brenkley, Blagdon, 

 Shotton, High Ewart, and Bedlington, and formed the main 

 watershed between the " Blyth " and " Tyne." These two 

 ridges I propose to call, for ease in , reference, the Whalton 

 Ridge and the Dinnington Ridge respectively, A spur of the 

 Dinnington Ridge passes through Throckley, Whorlton, 

 Newbiggin, and Kenton to Coxlodge. This may be called 

 the Kenton Ridge. 



Berwick Hill, which appears now as a short spur of the 

 Dinnington Ridge, was quite isolated in pre-glacial tim^s 

 from that ridge by the deep valley of the " Pont." 



Around the north, west, and south sides of Berwick Hill is 

 a stretch of flat, drift-covered country about lo square miles 

 in extent. Borings in this district have disclosed the fact that 

 a siniilar expanse of flat land existed there in pre-glacial days. 

 This is evident from the data in the following table :— 



Thickness of Drift 

 Name of Place. in Feet. 



Height of 



Rock-Surface 



IN Feet. 



Ogle 



127 





156 



Milburn Lodge 



119 





181 



West Coldcoats ... 



122 





150 



Middle Coldcoats 



119 





TOO 



Smallbuni 



117 





80 



Ponteland Village 



112 ( + ) 





88 (-) 



Ponteland Lane House ... 



106 ( + ) 





94 {-) 



Carr House 



131 





95. 



New Horton Grange 



120 





84 



North Carter Moor 



117 





56 



Kirkley Mill ... ... 



97 





77 



Thorneyford 



117 





75 



The plus sign (-)-) indicates that the boring was stopped before rock 

 was proved ; the minus sign (-) corresponding thus refers to the maximum 

 height of the rock surface possible in that place. 



