102 The Rev. W. Bucrland on the Excavation of Vallci/s, %c. 



The quantity of diluvian gravel which remains lodged upon the slopes and 

 in the lower regions of the valleys that intersect this coasts is very considerable ; 

 but it is not probable that many animal remains will be discovered in it, because 

 the large proportion of clay with which it usually is mixed, renders it less lit for 

 roads than the shattered chert strata of the adjacent hills, and consequently 

 gravel pits are seldom worked in the diluvium . Enough, however, has been done 

 to identify its animal remains with those of the diluvian gravel of other parts of 

 England, by the discovery, a few years since, of several large tusks of Elephants 

 and teeth of "Rhinoceros in the valleys of Lyme and Charmouth. 



On the highest parts of Blackdown, and on the insulated summits which 

 surround the vale of Charmouth, I have found abundantly pebbles of fat quartz; 

 which must have been drifted thither from some distant primitive or transition 

 country, and carried to their actual place, before the present valleys were exca- 

 vated and the steep escarpments formed, by which those high table lands are 

 now on every side bounded. These cases are precisely of the same nature 

 with those of the blocks of granite that lie on the mountains of the Jura and 

 on the plains of the north of Germany and Russia, and with that of the 

 quartzose pebbles found on the tops of the hills round Oxford and Henley ; 

 which latter I have described in the fifth volume of the Geological Transac- 

 tions, as having been drifted thither from the Licky Hill and central parts of 

 England, before the excavation of the present valley of the Thames. 



