270 MR. E. HULL ON THE NEW RED SANDSONE, ETC._, 



have recourse to the supply which Nature has placed within 

 their reach. 



I now proceed to give some special instances of wells 

 in the Trias and Permian formations. 



Liverpool District. 



Well at Bootle. — Surface 50 feet above sea. Four holes. 

 Greatest depth of one of these reached, in 1844, 600 feet. 

 Yielded at first a large volume of water ; but the quantity 

 was never accurately determined till January 1850, when 

 the yield was 1,102,000 gallons per day. Now reduced 

 to 700,000 gallons per day. 



Windsor Well. — Sunk about the year 1840. Surface 

 190 feet above sea. Depth of well 210 feet. Yield not 

 ascertained till 1850, and was then found to be 700,000 

 gallons per day. Bored a hole 4 in. diameter, 189 feet 

 from the bottom. Yield then increased to 958,000 gallons 

 per day. In June 1853 the yield diminished to 814,000 

 gallons per day. Then widened the 4-inch bore to 6 inches 

 in diameter, and deepened to 210 feet. Yield increased to 

 1,110,000 gallons. In 1856 diminished to 972,000 gal- 

 lons. Bored additional depth of 34^ feet. The total depth 

 is now 245 feet, and the yield about 1,103,000 gallons per 

 day. 



Green Lane Well, — Sunk 1845-6. Surface 144 feet above 

 sea. Depth of well 185 feet. Yield at first 1,250,000 gal- 

 lons per day. In April 1852, yield 1,203,000 gallons. 

 Bored 6 -inch hole, 60 feet from the bottom of well ; yield 

 increased to 2,317,000 gallons. 



June 1853, yield 2,303,000 gallons. Bored again 38I 

 feet; yield increased to 2,689,000 gallons. June 1856, 

 widened hole, and deepened it to a depth from bottom of 

 well of 200 feet. Yield increased to 3,321,000 gallons per 

 day. Total depth from surface 358 feet. 



Messrs. Earl and Carter^s well, in Oil-street, above a 



