ON THE CIRCULATION OF UNDERGROUND WATERS. 



307 



sunk on their sites. The actual sections met with by the shafts are as 

 follows ; water had been admitted to the beds, between the completion of 

 the borings and the execution of the shafts, by the withdrawal of the 

 lining tubes of the bore-holes. The case is of great interest as showing 

 the care that must be exercised in dealing with borings not to induce 

 artificial conditions. 



Lancashire Shaft. 



Ft. in. 



The red sandstone occurred at a depth of 133 feet G inches, sandy clays 

 and loamy sands intervening. 



Cheshire.. 



Ft. in. 



Cheshire Shaft. 



Soil . 



Clay . 



Peat . 



Clay and loam , 



Running sand 



Loam 



Fine gravel 



Running sand 



Clay and sand 



Stiil clay . 



In the boring the clay continued to 97 ieet, marly sand to 105 feet, then 

 red sandstote. 



The following analyses are interesting, as showing the effect of 

 natural springs of brine issuing at pressure, and mixing with the fresh- 

 water in the Glacial Drift overljing the Keuper marls at Calveley, near 

 Tarporley, Cheshire. The analyses were made by Mr. J. Carter Bell : — 

 1. Well in Mr. Jos. Jink's field, Calveley- 2. Brook in Mr. James 

 Trickett's farm, Calveley. 3. Well at new kennels, Calveley. Stated 

 in grains per gallon : — 



