ON THE CIRCULATION OF UNDERGROUND WATERS. 127 



At the other end of the town (from the Selby Waterworks) there is another 



well 380 feet deep, still in lied Sandstone ; the water stands very near the top. 



Another well at Cawood is about 300 feet deep ; some years after its 



sinking, at 11 in the morning of a certain day, the water fell considerably, 



while at the same hour the Selby well gave an overwhelming supply. 



Well sunk by Mr. Swale at Walmgate Bar, York : — 



feet. in. 



Clay and stones 24 



Quicksand 60 



Fine sandstone 204 



Parting with water 2 



Fine sandstone 279 



567 2 



At Bilton HaU, near York, sandstone (New Red) reached at 20 yards, not 

 gone through. 



Boring at Goole in connexion with a railway-bridge across the Ouse : — 



feet. 



Silt and sand 20 



Black peat 18 



Soft brown clay, sand, and gravel 18 



Soft blue shale full of water 18 



Strong blue shale with gypsum (here foundation 



was made) 30 



104 

 Well at Street Houses in Tadcaster Road (York) : — 



feet. 



Strong clay 33 



Sand 9 



(New Red) Red Sandstone 6 



Well at Holme, near Market Weighton (at ' Blacksmith's Arms ') : — 



feet. 



(Sunk) Sand 15 



(Bored) Blue stone with a layer of "Plaster" at 



bottom 60 



Blue and brown stone 225 



300 

 (Am not sure about these measures. — J. C. W.) 



Sinking and boring at Saltmarsh, 1834: — 



feet. 



Earth 36 



Quicksand 18 



White and blue plaster and red marl 126 1 



Blue marl 33 I 201 



Red marl 42 J 



Soft red sandstone 60 



315 



