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instance the whole of the Upper Coal Measures, 1,900’ thick in 
; all, are absent, and to find the Lower Seams a mass of Sandstone 
(Pennant) proved at the Golden Valley Pit* to be at least 600’, 
according to Prestwich, and most probably considerably thicker, 
by some 1,500’, would have to be pierced before reaching the 
Lower Series of Coal Measures beneath. 
The upper series of Coal Measures worked so profitably at 
-Radstock, reaching to a thickness of 1,900’ in all, are therefore 
absent.+ 
With regard to the main object of getting a supply of water. 
_ After passing through the Lower Lias beds which generally hold 
‘up the water percolating down from any pervious beds above, the 
only chance was to sink through the Keuper Marls to the Sand- 
stones near their base, which generally yield an abundant supply ; 
but so far as I can discover from the cores in my possession, 
‘those beds seem to be very thinly if at all represented, and the 
fact of the sides of the bore hole having fallen in for the last 116’ 
above the Pennant, seems to indicate that the harder Sandstone 
beds are absent and that the Marls rest upon the Coal Measure 
‘Sandstones directly. Water was obtained, however, from the 
pseous beds, amounting to some 5,760 gallons per hour, or 
138,240 gallons per 24 hours. When pumps were at work, the 
1 ater was 12ft. from surface; when stopped, the water rose to 
level of ground. Analysis shows much sodium chloride or 
_ * “Golden Valley ” Pit, in the valley of the river Boyd, about one mile 
1orth of Bitton village. 
+ (a) group. Radstock and Camerton coalfield... 1,000 
: (4) group. Farrington, Parkfield and Coal it 
— Heath Tie Bi 750 
(a) divided from (4) by Red Shale ath AS 150 
Total thickness ... 1,900 
Pennant Sandstone aN cc) 2,006 
-Ower series. (a) Kingswood, Newbury, &e. ed average 
(4) Bristol, Vobster and Twerton } 2,000 
K N 
