AND NEIGHBOLRHOOD. 207 



parts of the town. The only exception to this 

 rule of estimating the thickness of the Till, to 

 my knowledge, is a district lying between the 

 Buck Inn, in Booth-street, and the south end of 

 Essex-street. Near the first-named place the Till 

 ought to be about ten yards in thickness, accord- 

 ing to the height of the locality above the Irwell ; 

 but it is only about a yard. After going through 

 the Till, the sand is reached, and afterwards beds 

 of gravel occur. The two last-named deposits 

 appear to occupy the position of No. 4-, and may 

 be considered as an extraordinary development 

 of that deposit in the neighbourhood of Man- 

 chester — although Mr. William Lancaster informs 

 me that in boring, at Barton Moss, he found under 

 fifteen yards of Till, eight yards of sand and 

 gravel. The excavations for the new Branch Bank 

 of England, in King-street, showed the occurrence 

 of the sand and gravel under the Till, and caused 

 considerable difficulty in getting a foundation for 

 that building. The following sketch will best 

 explain the position of the deposits, a repre- 

 senting the Till and h the sand and gravel : — 



Fig. I. 



East 

 Booth 



Street 



