DE RANGE : BORINGS FOR WATER AND SALT IN COUNTY YORK. 489 
deepened since. It is 160 feet above the sea, and a ten-foot shaft is 
carried to a depth of 91 feet, with a bore-hole at the bottom 6 inch 
in diameter carried a further 45 feet, or a total depth of 136 feet. 
Three headings are driven out from the shaft, with a total length of 70 
3^ards. The water level varies with the speed of pumping and the 
season, no full record has been kept : the average pumping level is 70 
feet from the surface, when 600,000 to 800,000 gallons of water are 
abstracted. The following is an analysis of the water : — 
Grains per gallon. 
Carbonate of Lime .. 10*150 
„ Magnesia ... 3*129 
Sulphate of Lime ... ... 3*036 
Chloride of Sodium 1*569 
Calcium 1*792 
Silica -294 
Alumina and Oxide of Iron '126 
Organic Matter ... ... ... ... ... *280 
Nitric Acid *376 
Iron ... ... ... ... ... ... Trace 
20*678 
Hardness in Clark's scale 
Before boiling ... ... ... .. ... 15° 
After boiling half-an-hour ... ... 5° 
Boring at Salton, near Malton, North Riding, carried out in 
1880, at 150 feet above the sea, the water overflows the surface from 
a 4 inch boring, carried to a depth of 316 feet, the water is slightly 
sulphurous. The section was : — 
Ft. 
Fluviatile Drift (R. Rye) ... ... ... 15 
Kimmeridge Clay ... ... ... ... 276 
316 
Boring at Irton, near Scarborough, finished August, 1882. 
The surface bank is 94 feet above the sea. A well was sunk 70 feet, 
followed by a boring 25 inch for 28 feet ; 20. inch for 152 feet ; 12 
inch for 189^ feet, or to a total depth of 439^ feet. The water over- 
