AND WESTERN EUROPE 9 



it may be a question whether these Islands were in- 

 habited by them at the time of the submergence. The 

 position of this " Head " all round these Islands shows 

 very clearly that the sweep of the debris was from 

 the centre of the islands outwards, or such as would 

 result from the flow off of a body of water during 

 the emergence of the islands (p. 43). The later 

 action of the sea has removed considerable portions 

 both of the " Head " and " Beach," but what remains 

 makes it evident that the islands were isolated at the 

 time of, and are little altered since the date of 

 their submergence. 



Elsewhere in the areas submerged the " Head " has 

 not been made, as in England, the object of special 

 research, and may easily have escaped notice or have 

 been placed in a different category. Still it is oc- 

 casionally to be recognised in other districts from 

 descriptive details. There are traces of both on the 

 coasts of Spain and Portugal. At Gibraltar we find 

 what may represent a large development of " Head " 

 in the rubble there referred to, but with only a 

 slight exhibition of an underlying Raised Beach. On 

 the south coast of France a raised Beach was long 

 since recorded at Nice, and one likewise exists at 

 Mentone, where , there is also a thick deposit of 

 osseous rubble (p. 36). Both are again met with 

 at a few places on the west coast of Italy (p. 49). 



The descriptions we have of Sardinia in respect to 

 these two deposits are not very clear, but they leave 

 little doubt of their existence, together with deposits 

 referable to other forms of the Rubble-drift. 



