32 THE OLD BEACH AND "HEAD" AT SANGATTE 



a Raised Beach 10 feet above the present beach. At 

 one end of the section this Head rises to the height of 

 nearly 100 feet, and at the other it inclines down- 

 wards to within a few feet above the sea level at the 

 village of Sangatte, four miles west of Calais. This 

 fine section, which extends nearly half a mile l along 

 the coast, is almost a counterpart of that at Brighton, 

 but, whereas at the latter place the greater part of it 

 is hidden by a sea-wall, at Sangatte it is exposed for 

 its whole length except where temporarily hidden by 

 falls of the cliff. The distance to which the last 

 upper bed of flint debris has here been propelled 

 into the plain is a noticeable feature. 



The lower jaw of a Mammoth has been found in 

 this Drift, but Mammalian remains are on the whole 

 much scarcer than at Brighton. On the other hand, 

 land shells, which have not yet been found at Brighton, 

 occur in places in considerable numbers, though the 

 species are few. They include 



Helix concinna ... ... Pupa marginata. 



pulchella ... .: ... Arion ater. 



Succinea oblonga ... ... Limax agrestis. 



The occurrence of land- slugs is not a common 

 feature. A few worn specimens of Palaeolithic flint 

 implements have also been found. 



In the estuary of the Somme the sections are im- 

 portant, inasmuch as the Raised Beach at Menche- 

 court, near Abbeville, is overlaid by an ordinary 

 fluviatile deposit of Pleistocene date, to which succeeds 



1 Its apparent length is increased by its not being at right 

 angles to the old coast line. 



