DE RAXCE : BORINGS FOR WATER AND SALT IN COUNTY YORK. 427 
Messrs. Mather and Piatt have carried out the following 
borings: — at Walton, Wakefield, 9 inch boring to 770 feet, all in 
Coal Measures, Coal 4 feet 1 inch at 650 feet. Bradford 24 inch 
boring 295 feet, at bottom of well 55 feet deep, Coal Measures, 
to coarse sandstone. Bradford 12 inch boring to 327 feet through 
Coal Measure Shale, dark grey rock and very hard black rock. 
The Oaks Rock is so called at Barnsley. At Trenton and the 
district south of Sheffield, it is called the Trenton Rock. It can be 
traced on its outcrop as far as Heath ; east of Wakefield it appears 
to thin away along a line running roughly north-west, and south- 
east through Normanton. It usually can-ies a large quantity of 
water ; when it is split up with shale the quantity is less. It is 
largely quaiTied for building stone and making grindstones, the most 
important quarry being near Barnsley, where the rock attains its full 
thickness, it is estimated to be 100 feet, and its base to be 850 feet 
above the Barnsley Coal. At Wath Main Colliery the total thickness 
of the rock was 55 yards ; it yielded an enormous quantity of water, 
one feeder alone yielding 3000 gallons per minute, after the tubing 
was in the shop, but before it was fully " wedged," the yield for months 
was 18,000 gallons per mmute. 
The Pontefract Rock is water bearing. 
The following is the succession of the Trias and Permian in 
Yorkshire, given by Professor Phillips : — 
Rhsetic (?) 10 feet in thickness. 
Keuper Marls, with thin greenish- 
white sandstone on the top ... 600 (?) „ 
White solid Sandstone, or Waterstone^ 
Soft Bunter Sandstsone ... ...> 603 (?) „ 
Conglomerate of the Bunter ! 
Upper Permian Limestone 45 „ 
G3^seous Marls 50 „ 
Lower Limestone ... ... ... 150 
Sands and Sandstone 50 (?) „ 
These lower beds are described by Phillips as resembling " the 
Lower Permian Sandstone of Manchester," and I have no doubt that 
this identification is correct, and that the Colleyhurst Sandstone of 
Manchester, is on the same horizon as those of Tynemouth on the 
