438 DE RANGE : BORINGS FOR WATER AND SALT IN COUNTY YORK. 
Fire Clay 
Coal and Marl 
Grit 
Shaly Clay 
Crit 
845 8i Shaly Clay and Grit hedi 
} Coal Measure. 
18 0 
18 0 
0 9 
84 0 
4 6 
244 6 
Rods broke, and could not be raised. 
Boring at Reedness, upon the estate of Mr. John Egremont, 
commenced Oct. 7th, 1835, superintended by Mr. John Walker, CE. 
The details were obtained by the late Rev. Clifton Ward, who divided 
the beds as follows . — ft. lu. 
Warp and Gravel ... 69 0 
Keuper 272 2 
1028 10 Bunter 687 2 
Dr. Parsons has given further details of this and adjacent 
borings in the Proc. Geol and Polyt. Soc. of West Riding, 1877, 
p. 216. 
The Yorkshire Oolites occupy the following areas : — 
In the basin of the Tees 
5> 3' 
Esk 
. . 183 
„ XXX vii. basin 
Ordnance Survey ... 
57 
„ xl. 
... 
... nil. 
,, the basin of the Hull 
... nil. 
)) a 
Foulness 
8 
>) )> 
Derwent 
57 
>> >) 
Ouse 
42 
>) )> 
Aire and Calder 
... nil 
3} >J 
Don 
... nil 
847 
mi 
miles. 
The average percolation of rain water will be 5 inches annually, 
or 200,000 gallons per square mile per day, giving an available 
quantity of 69 J million gallons, or a supply at 30 gallons per head 
for more than 2? million inhabitants. Amongst those who draw upon 
this supply is the town of Scarborough. The Waterworks Well is 
near Osgodby, it was sunk in October 1870, and has not been 
