656 



ON THE GEOLOGY OE THE SOUTHERN WEALDEN AREA. 



2. That the valley-gravels have been mainly built up of the 



detritus from the older beds : that these valley-gravels have 

 been formed by existing rivers, flowing in their present 

 directions, and that in the lower gravels mammalian remains 

 have been discovered in several localities. 



3. That the gravels of this area are strictly local in character, 



and contain only such detritus as can be derived from the 

 districts drained by the different rivers or their tributaries. 



4. That a considerable amount of denudation is proved, not only 



by the fragmentary nature of the watershed-gravels, but 

 also by the height to which the terrace-gravels reach above 

 the present level of the rivers. 



5. That the finding of a granite boulder on the summit of the 



Chalk escarpment may, if confirmed by other similar dis- 

 coveries, considerably modify existing ideas respecting the 

 physical co.ni\tion of this area during the Glacial period. 



