ON THE CinCULATION OF UNDERGROUND WATERS. 



79 



The whole of the first 435 feet belongs to the pebble beds ; the under- 

 lying sandstone first recognised at the Bootle boring of the Liverpool 

 Corporation Waterworks by your reporter appears to be absent, and the 

 middle bunter rests directly on 5h feet of coal-measure shales. 



The new borings at Knowsley and Kirby made for the St, 

 Corporation Waterworks are now completed. The following 

 are furnished by the Corporation Engineei", Mr. D. M. F. 

 M.Inst.C.E.:— 



Helens 

 sections 

 Gaskin, 



Feet. 



115 



352^ 



460 



Kirly Boring. 



Turf . 

 Clay . 

 Red sand 



„ sandstone 

 Yellow „ 

 Red „ 



Mottled , 



Grey 

 Red 



coarse 



pebbles 

 with yellow 

 pebbles 



„ ,, witli white 



„ „ pebbles 



Variegated stindstone 

 Red sandstone and pebbles 

 Coarse-grained sandstone 

 Red sandstone 

 Variegated sandstone . 

 Red ,, 



Variegated „ 

 Red „ pebble: 



White 

 Red „ „ 



„ marl .... 



„ sandstone, with bands of white stone 

 Soft red sandstone .... 



veins 



Feet. 



H 



4 



H 



-'a 

 2 



3 



''a 



6ir 

 78i 



3" 

 26 



3 

 28 



9 

 70 



0| 

 7 



0^ 

 38 

 Oi 



52" 



0^ 

 40 

 67^ 



The lower 107J feet are referable to the beds occurring between the 

 base of the Pebble Beds and the Coal-measures at Winwick, Parkside, 

 and Collins Green, and, like them, full of sulphuret of iron. 



Feet. 

 9 



198 



Knowsley Watenvorks Boring, 



Feet. 



Surface soil and sand 3 



Brown marl 3 



Red and yellow marl 3 



Red sandstone ........ 6 



Soft „ 42 



Red „ veins of yellow 72 



Close-grained sandstone, veins of yellow . . .33 

 „ „ without veins . . .28 



Gritty grey sandstone 9 



Red marl 1 



Red sandstone 27 



Red, with veins of calcitc 6 



Red sandstone 25 



„ „ close-grained 1 



Red marl 3i 



White sandstone &\ 



Grey „ 3 



