Mr. G. Tate on Glaciated Bocks. 237 



a direction, as the stone lay, of north-west to south-east. It 

 is particularly observable that all the dressed rocks in the 

 boulder clay, both here and in other parts of the border-land, 

 have been derived from rocks in situ within the district ; 

 none has travelled far. 



In the Tyneside Transactions of the same year, there is a 

 record by the late W. K. Loftus (the Assyrian traveller), of 

 his discovery of glaciated limestone rocks at Belsay in South 

 Northumberland, the scorings and scratchings being in the 

 direction of the dip of the limestone, which is here, I believe, 

 N.N.W to S.S.E. 



These are the first recorded observations of glaciated rocks 

 in Northumberland. Dr. Buckland had previously examined 

 the county in search of traces of ancient glaciers ; but he 

 erroneously referred superficial deposits in the gorges and on 

 the flanks of the Cheviots to the moraines of glaciers ; for 

 these deposits, on careful examination, prove to be formed of 

 water-worn rocks. 



2. A. little north of Dunstanburgh Castle, a low bank of 

 boulder clay, just above high tide mark, covers a limestone 

 which is polished, striated, and grooved similarly to that of 

 Hawkhill, some of the grooves are two feet four inches long 

 and one quarter of an inch broad ; the direction of the strise 

 and grooves is from west-north-west to east-south-east. 



3. At Swinhoe, the limestone, which is also below the 

 boulder clay, is similarly polished and striated in the direc- 

 tion of north 50° east to south 50° west. 



4. At Middleton, near to Belford, the limestone below the 

 boulder clay is polished and striated in the direction of north- 

 west by west to south-east by east. 



5. Along the coast from Foxton Hall to the mouth of the 

 Coquet, there are hills, from twenty feet to fifty feet in height, 

 formed of boulder clay, gravel, and sand. Beneath this clay 

 at Birling Car, which is one mile south of Alnmouth, I found 

 a gritty sandstone, (containing grains of magnetic protoxide 

 of iron,) with traces of ice action, and having coarse striae in 

 the direction of north-east to south-west. 



6. The surface of the glaciated porphyry on Abb's Head 

 is similar to that of the glaciated limestone, excepting that 

 it wants the mirror-like polish; but this arises from the 

 different structure of the two rocks ; the striae are of the same 

 character ; and in one of the cleared spaces the direction is 

 from west-north-west to east-south-east, and in the other 

 from north-west to south-east. 



