216 



liEPORT 1882. 



or about 270 feet per mile from the edges of the basin towards the axis, 

 which occurs more to the eastern than the western margin. 



The fault throwing in the coal measures of Arley "Wood is believed to 

 be connected with the fault throwing back the outcrop of the main part 

 of the coalfield at Broomfield Park ; but of this there is no evidence, and 

 as the dips in the Permian show the flexures to be present on both sides 

 of the supposed fault, its existence is very doubtful. If it occurred, and 

 were a watertight barrier, the water percolating into the sandstones to 

 the west of Atherstone and flowing south would be thrown out in a line 

 of springs, which is not the case ; and there is no doubt that the waters 

 travelling in the porous portion of the system flow south to Leamington 

 and Warwick, where a portion of the supply is utilised. South of this 

 point the Permians are concealed by triassic, liassic, and oolitic rocks 

 in the direction of Banbury. Southwards the Permians probably wedge 

 out before the Trias, which continue into the Thames basin ; the water 

 travelling down the dip planes of the Permian, where that formation thins 

 out, probably enters the overlying triassic sands, and, prevented from rising 

 higher by the Keuper marls, probably flows a considerable distance under 

 the Thames basin, where its outlet being checked by the thinning out of 

 the Lower Trias against the Palaeozoic ridge, causes the subterranean 

 Trias to be fully charged with water in a stationary condition, and thus 

 limits the amount of absorption in the area of absorption. 



Between the base of the Permian and the Spirorhis limestone is 

 a thickness of 150 feet, and between it and the first workable coal is a 

 further 500 feet, of which a large portion consists of Permian sandstone 

 fully charged with water, which was met with in sinking the Exhall 

 Colliery. 



Appendix I. — Millstone Grit Wells. 



Collected by Mr. C. E. De Ranee. 



From Messrs. Mather and Piatt, Salford Ironworks, Manchester. 



Description and thickness of each Stratum hored through at Messrs. 

 J. 8f E. Gru7idy's, Bury. 



Well 15 ft. deep 

 ft. in. 



At 



(48 yds.) 



