FOUND NEAR BLACKPOOL. 



125 



The order of super-position of the beds is not at all easy to 

 make out, as there are such intercalations and graduations of 

 one into another that at times it is impossible to speak with 

 any degree of certainty. 



Under the Royal Edward Hotel and at North Fell are 

 beds of silt, forming arches dipping north and south, thus 

 plainly shewing that this deposit has been subjected to consi- 

 derable movements since its deposition. North of the Gynn 

 the stratified beds of sand and gravel have a slight tendency 

 to dip towards the south. Further on, in Bispham, the beds 

 of gravel have been cemented together so as to form a hard 

 conglomerate, which is much used in making rockeries and 

 walls at Blackpool. Near the highest part of the cliff, a little 

 south of the first farm house past the Gynn, No. 1 bed is 

 capped with several yards of brownish coloured forest sand. 



Having given the above general sketch, I shall now pro- 

 ceed to describe the several beds a little more in detail : — 



No. I deposit much resembles the till in the neighbourhood 

 of Manchester, except that it is of a rather browner colour, 

 and effervesces more strongly when treated with acids. The 

 upper portion of it, from its freedom from stones, is well 

 adapted for brick-making, but after going down four or five 

 feet, it contains many small fragments of limestone, and 

 becomes more stony, and, consequently, unsuited for such 

 purpose, although it makes good " till"* for the land, as the 

 brick-makers say. In the brick-yard, near to the railway 

 station, I found fragments of shells, but they are not very 

 plentiful. 



Upon carefully examining 100 specimens of the rocks thrown 

 out of the clay by the workmen who were employed in digging 

 it for brick-making, I found them as follows : — 



* The origin of the term Till, in geology, no doubt arises from that deposit 

 having been used by farmers as till for their land when it was marled. 



