238 M. Arago on Artesian Wells 



according to my knowledge, there is the most abundant supply 

 of water, is that in the copper manufactory of Merton, in Surrey ; 

 its issue amounts to 200 gallons a minute. 



The artesian well of Rivesaltes, for which the inhabitants are 

 so much indebted to Messrs Fabre and Esperiquette, engineers, 

 furnishes 176 gallons in the same time. 



The well lately sunk near to Litters, in the department of the 

 Pas-du-Calais, with a depth of 140 feet, affords a supply of 155 

 gallons per minute. 



Of Artesian Wells whose waters have been employed as Movirtg 

 Powers. 



At the village of Gouehem., near Bethune, four wells have 

 been sunk in a meadow to the depth of 120 feet. The watei-s 

 which issue from them are converted into the water-course of a 

 flour-mill, and subserve other agricultural processes. 



At SairU Pol, there is another mill, the only moving power of 

 which is the water from five projecting fountains. 



At Pontes, near Aire, the waters of ten sUch wells are made 

 to turn the mill-stones of a large mill, as also to blow the bel- 

 lows and beat the hammers of a nail manufactory. 



At Tours M. Degousee has excavated a well, in the silk 

 manufactory of M. Champoiseau, to the depth of 430 feet, which 

 pours 237 gallons of water per minute into the troughs of a 

 wheel of twenty-one feet diameter. This wheel works the looms 

 of his manufactory, 



At Tooting, near London, the fountain of an apothecary 

 puts a wheel of four feet diameter in motion, and this sets a 

 pump to work, which raises water to the top of a house three 

 stories high. 



Of the advantage to which Industry, in various circumstances, has 

 turned the Waters of FourUains. 



On the present occasion we need not dilate on the benefits 

 these waters confer on public health, nor on their use in irriga- 

 tion, &c. &c. We shall only point out their application to a 

 few purposes which are less generally known. 



These springs have been put in requisition even in countries 

 where more common water-courses are not unfrequent. Their 

 constant and high temperature permits them to be applied to the 



