260 Further Studies on the Soils of North Wales 



eastern regions approach to those of the adjoining English counties, 

 the western region is more tj^pically North Welsh. These factors are 

 of considerable infliience on the soils of the respective regions. 



North Wales. Oiographical. 



Altitudes in feet 



Altitudes in feet 



0—600' 

 600—1000' 



1000—2000' 



Above 2000' 



Geology. 



The region dealt with in the present paper is mainly drift covered. 

 The only sedentary soils described are those lying on the Carboniferous 

 Limestone and Millstone Grit. The former rocks occur in the eastern 

 parts of Anglesey, the Creuddyn peninsula of Carnarvonshire, along 

 the west of the Vale of Clwyd and on a broad outcroiJ north and east 

 of the Glwydian hills stretching from the coast nearly to the Dee valley. 

 In manv places it is covered with drift, so that the development of 

 Carboniferous soils is by no means so extensive as would appear from 



