76 SECTIONAL ADDRESSES 



and at the head of the Smestow Brook. Towards the north-west it 

 is continuous with the heavily drift-covered plain of North Shrop- 

 shire. 



2. Watershed between the Tame on the north and the Penk, Severn and 

 Avon. This contains most of the Midland Plateau, as defined above 



(P- 74)- 



3. The watersheds between the Avon, Anker and Soar. This area 



extends over comparatively low ground from the Leicestershire 

 Coalfield and Charnwood past Market Bosworth and Hinckley to 

 Coventry and Rugby. 



Fig. 2. — The Spheres of Influence of the glaciers that invaded the Midlands : — 

 1. Little Welsh glacier or ' Welsh Re-advance ' ; 2. Main Irish Sea glacier; 

 3. Stratford Stage of, and 4, Supposed maximum of Great Eastern glacier ; 

 5. Maximum of First Welsh glacier ; 6. Possible southern limits of a very 

 early Eastern glacier. 



Each of these three areas is characterised by a particular type of drift 

 (Fig. 2). Yet each type is by no means confined to one district, but as a 

 rule has had a wider distribution, evidence for which may in some cases 

 be found in the intervening vales (Fig. 3). 



In the first or north-westerly district the drifts belong, perhaps exclu- 

 sively, to the Main Irish Sea glaciation. They are full of Scottish and 



