AS SOURCES OF WATER-SUPPLY FOR TOWNS. 



261 



frequent partings of shales and clays, taken in connexion 

 with the comparatively small vertical development of these 

 beds, must prevent them from occupying as high a posi- 

 tion in the scale of water-bearing strata as the underlying 

 Bunter Sandstone. 



Fig. 2. — Diagram to show the position of the Well at 

 Wolverhampton which failed to afford a supply. 



1. Red Marls and Sandstones of Permian age — only moderately water- 

 bearing. 



2. New Red Sandstone and conglomerate — ^highly water-bearing. 



A. Actual position of well which failed. B. Position where it ought to 

 have been. If the well had been sunk at B, I have no doubt a large supply 

 could have been obtained, which might then have been pumped up to the 

 reservoir on the top of the hill at A. 



The following is the general succession of the Trias sic 

 and Permian formations in the Midland and North-western 

 counties to which reference is made in these pages, show- 

 ing which are water-bearing, or the contrary. 



General Succession of the Triassic and Permian Beds. 



Lancashire 



and 

 Cheshire. 



Hed marl, 3000 ft 



Lower Keuper sand- 

 stone, or water- 

 stones, 450 ft. ... 



Upper mottled sand- 

 stone, 400 ft 



Pebble-beds, 500 to 



750 ft 



Lower mottled sand- 

 stone, o to 200 ft. 



Red marls and lime- 

 stones ... 



lb. Lower Red Sand- 

 stone, 50 to 450 ft. 



I a. Absent 



Derbyshire, 

 Staffordshire, 

 and Notts. 

 .600 ft 



Warwickshire 



and Remarks. 



Leicestershire. 

 450 ft Brine. 



200ft icoft /Moderately 



■50 to 200 ft 



■ 100 to 300 ft. .. 



o to 1 00 ft 



Absent 



I Absent 



r Red sandstones 

 \ and marls, 500 ft. 



^ ^^ \ water-bearing. 



Absent Water-bearing. 



o to 100 ft. ...Water-bearing. 



Absent Water-bearing. 



Absent No water. 



Absent Water-bearing. 



\ ff f Moderately 



J ^ ^ \ water-bearing. 



