ON THE CIECULATION OF UNDERGROUND WATERS. 



3fi3 



Weekly Readings of Height of Water in Messrs, S. Gourtauld 8f Go.'s Well, 



Boching, Essex. 



Datum is 137'07 Feet above Sea-level. 



Warwickshire. 



The Birmmgham Corporation Waterworks now daily obtain 8 million 

 gallons of water from three deep wells in the suburbs, two on the north 

 and one on the south. 



Aston Well, 2 miles north of Birmingham. 



Feet 



Gravel 10 



Bunter sandstone 232 



Eed marl 36 



Sandstone 10 



Red marl 15 



Very hard sandstone ......... 53 



Marl 45 



401 



The first 120 feet is a well, the remainder is bored. 



The Perry Well is 170 feet in depth. 



The Short Heath Well is 180 feet, with a boring to 400 feet. 



At Messrs. Heaton's Mint the well is 300 feet in depth. 



Nearly the whole of this supply is derived from the Pebble Beds, 

 which are cut off to the east of a fault ranging N.B. and S.W. by Rubery 

 to Erdington ; eastward a considerable area of Keuper marls extend from 

 Birmingham to Shiistoke, and from Tamworth to Warwick and Redditch, 

 and form an area of surface water supply from drift superficial deposits. 

 Numerous attempts to obtain a good supply of water from the sandstones 

 beneath have been made, but so far without success. 



The small Heath boring, for the Birmingham Corporation, made in 

 1876, in search of water for baths, was discontinued, after proving 440 

 feet of Keuper marls with gypsum. 



