ON THE CIRCULATION OF UNDERGROUND WATERS. 75 



Windsor Well. 



On 5th Dec, 1868, the hardness of Windsor Well 



On 26th June, 1S72 „ 



On 30th Sept., 1872 



On 20th Oct, 1873 



On 24th May, 1875, „ 



On 13th March, 1876 " 



On 8th June and Sept. 8th „ 

 On 7th Dec. 

 On 1st Sept. 



Ludlow-Lane Well. 

 On 2nd Dec. 1868, the hardness of Dudlow Lane well was 6i 

 On 24th Sept., 1872 „ „ „ „ 6 



On 30th Sept., 1872 „ „ „ 71 



On 20th Oct., 1873 „ „ „ „ 71 



In 1874, when tbe pumps were frequently stopped, the average was 5|° ; 



the highest was 7°. 

 On 1st June, 1875, the deep-bore was 7 0, 86. 



„ „ ,, well itself was 8°. 



' On 4th Sept., 1876, the deep-bore was 8°-88. 



„ „ „ well was 8°. 



The average at present is 7|°. 



The hardness was taken weekly in 1874, and there was no regular difference 

 between tbe hardness in summer and winter. 



The hardness of Flaybrick-Hill well in Birkenhead was 4|° in 1870, and 

 5° in 1874. j Campbell Brown, D.Sc. 



Liverpool Royal Infirmary, School of Medicine 

 March 4, 1877. 



Liverpool Corporation Waterworks. 



Particulars of Wells in the New Bed Sandstone belonging to the Liverpool 



Corporation. 



Booth Well. — The depth of tbis well from tbe surface of the ground is 

 104 feet. The bottom of the well is 49 feet below Ordnance datum. In 

 connexion with the well there are 15 bore-holes, one of which (4 inches in 

 diameter) is sunk to 571 feet below O.D., one to 273 feet 5 inches below O.D., 

 and one to 268 feet 5 inches below O.D. The other bore-holes are shallow. 



Green-Lane Well. — The depth of this well from the surface of the ground 

 is 185 feet. The bottom of the well is 49 feet below O.D. There are two 

 bore-holes : one, of 9" diam. at the top and 6" diam. at the bottom, is sunk 

 to a depth of 248 feet 6 inches below O.D. ; the other, of 18" diameter, is sunk 

 to a depth of 359 feet below O.D. 



Windsor Well. — Depth from surface of ground 210 feet. Bottom of well 

 below Ordnance datum 24 feet 2 inches. There is one bore-hole of 6 inches 

 diam. at the top and 4 inches diam. at the bottom. Tbe total depth of the 

 bore-hole is 269 feet below O.D. 



Ludlow-Lane Well. — Depth from surface of ground 247 feet 3 inches. 

 Bottom of well below Ordnance datum 49 feet. Bore-hole 18" diam. sunk 

 to a depth of 245 feet below O.D. , 



The following is a tabulated statement of the levels of the water in tbe 

 several wells in relation to the Ordnance datum on the dates referred to by 

 Dr. J. C. Brown in his report on the hardness of the water: — 



