126 



NOTES ON TIJE DRIFT DEPOSITS 



Total. 



Granites, greenstones, porphyries, &c. 49 



Slates and Silurians 32 



Mountain limestones 6 



Ck>al measures 9 



New red sandstones and other sujie- 



rior rocks 4 12 1 



100 30 43 27 



Six of the slate and silurian specimens were striated. 



In the brick-yard near to the Royal Edward, on examina- 

 tion of 100 specimens, I found that the stones there thrown 

 out of the clay were of the following descriptions, viz : — 



Granites, greenstones, porphyries, &c 42 



Slates and Silurians 44 



Mountain limestones 4 



Coal measures 8 



New red sandstones and other superior rocks 2 



100 



Their external characters were pretty much the same as in 

 the table above described, of specimens from the brick-yard 

 near to the railway station. Similar fragments of shells were 

 likewise met with. 



Deposit No. 2 is shewn on the face of the cliff under the 

 bed last described. The clay to the deptli of about 15 yards 

 in some places is without much change of character, except 

 that it is a little more stony. Isolated patches of stratified 

 sand are met with in it. One or two of these may be seen in 

 the face of the cliff below the Royal Edward, and by their 

 soft nature cause the cliff to fall faster than in other places. 

 Shells are more frequently met with in it than in the brick 

 clay. Few marks of stratification can be traced in the deposit 

 except where the beds of sand and fine gravel occur. 



These are regularly stratified, contain numerous shells, and 



