Vol. 60.] 



THE VALLEY OF THE TEIGN. 



327 



Barton and Exeter, do not reach so much as 700 feet (see fig. 2). 

 Consequently, if present altitudes are any guide to the general slope 

 of the more ancient surface, the ancient Teign could easily have made 

 its way over the country which now forms the watershed between 

 the*Lower Teign and the Alphin Brook. This I believe to have 



Fig. 2. — Map of the neighbourhood of Dunsford. 



[Scale : 1 inch=l mile. Contours indicated in feet. The double broken lines 

 show the probable course of the ancient rivers.] 



been its course, until certain chauges took place which led to the 

 capture of its waters by a tributary of the river that was forming 

 the valley of the Teign Estuary. 



The next point that calls for explanation, is the formation of 

 the valley now occupied by the Estuary of the Teign. The length 

 of this, from near Kingsteignton to Teignmouth, is about 4 miles ; 

 and its direction is from west to east, the land on the north side 



