ON THE CIKCULATION OF UNDEEaEODND WATEBS. 



371 



Analyses of Waters from Enson Moor, hj Prof. Attfield, Ph.D., F.B.8., 

 F.I.G., F.G.8. London, 17 Bloomshury Square. 



From these analyses it appears that the amount of chlorine in- 

 creased in the water from the small borehole from 18 grs. per gallon on 

 August 8, 1886, to 35 grs. in August of the present year, the water from 

 the large borehole on June 28, 1887, being identical in quality, viz., 

 35"8 grs. per gallon. The analyses of these waters show some remarkable 

 variation, the amount of chlorine in the large borehole decreasing from 

 38'1 on March 15, 1887, to only 12 grs. on April 1, and increasing again 

 to 35'8 on June 28, which would presumably be the amount present 

 before the inburst of weak brine on July 2. 



Stafford Potteries Waterworks. 



Information from Mr. G. D. Harbison, C.F., Engineer to the 

 Potteries Waterworlcs. 



Works in progress (August 1887) at Hatton Mill, near Eccleshall, 

 about 1;^ mile north of Standon station, and about 3 miles south of 

 Whitmore station. 



Two boreholes have been carried out, No. 2 being 250 feet N.W. of 

 No. 1. The level of No. 1 is 35 feet above Ordnance datum, and is 

 carried 417 feet below the surface; No. 2 is 6 feet lower and is carried 

 480 feet. Water flowed over from the first hole at the rate of 360,000 

 gallons a day when at a depth of 230 feet, at 417 feet at the rate of 

 700,000 gallons per day, but after a month this was reduced to 660,000. 

 No. 2 hole yields 700,000 gallons and has abstracted the larger portion of 

 the supply of No. 1, which is now very small. The quality is very good, 

 and is of 11 degrees of hardness ; water flowed to the surface when a 

 depth of 120 feet was reached. The section penetrated was as follows : — 



