Mr. George's Analysis of a Sulphuretted Water. 245 



Messrs. Taylor and Martineau, by Mr. J. Blackaller, and dated 

 Real del Monte, Oct. 18, 1826. 



" In the early part of May last I had the pleasure of having 

 the erection of the first of your engines at the mine of Moran 

 placed under my direction and superintendance ; and on the 

 1 2th of August started the same, to the no small surprise and 

 satisfaction of the numerous visitors who had assembled on 

 the occasion. The engine has continued to work beyond our 

 most sanguine expectations, not a thing having failed or re- 

 quired alteration. 



" Our foundry has been at work a short time, and we have 

 turned out some decent castings, both in brass and iron." 



On the SI St of October, Captain Vetch also writes: " I am 

 happy to state that Moran Mine may now be considered as 

 dry ; that is, the water has been sunk to the bottom of the 

 shaft ; but it will be necessary by means of flat rods to drain 

 some of the pozos (pits or winzes) in the lowest level, to get at 

 the rich ores." 



LI. Analysis of a Sulplnirctted Water from the Northern Part 

 of the Yorkshire Coal-^eld. By E. S. George, F.L.S. 

 Hon. Mem. Y.P.S.* 



nPHIS mineral water is very extensively employed in the 

 ■*- fulling of woollen cloths, — a process to which, from the 

 absence of earthy salts, it is peculiarly adapted. It formerly 

 issued in a considerable spring at the village of Holbeck near 

 Leeds, and was used medicinally : it appears in most cases to 

 rise from a thick bed of shale lying below the flagstone, and 

 so large is the supply that it has been procured in every situ- 

 ation in which borings to a sufficient depth have been made. 

 There are in Leeds near fifty borings, and about 200,000 

 gallons of the water are pumped up daily. The depth at which 

 the water is procured, from 70 to 200 yards, according to the 

 situation of the well as regards the inclination of the strata. 

 Tlie amount of both gaseous and saline contents varies with 

 the occurrence of higher springs, affected by heavy rains or 

 by sudden elevations of the river Aire. 



The water analysed was from Johnson's Well in Campfield, 

 Leeds; the depth of the boring 90 yards: upon the surface is 

 a bed of gravel about four yards thick, comnuuiicating with 

 the river Aire, from which the well is about 200 yards distant: 

 the water in the gravel is prevented from mixing with that in 



• Read to the Yorksh. Phil. Soc. Jan. 2, 1827; anil coninuinicated by 

 the Autiior. 



the 



