HOETICULTUEAL SOCIETY. 



Lacks on such a well being that it may be lowered by viiiusual 

 or continuous pumping so as to require some time to refill, and 

 that in course of time the standing-point of the water gradually 

 sinks. A well which has dropped upon a fissure, on the other 

 hand, may apparently be pumped incessantly without lowering- 

 its standing-point. It draws its supjalies from a running stream, 

 as it were, and as fast as the well-water is pumped out other 

 water flows in. This remark, however, only applies to the 

 standing-point when it has once been found ; for after the well 

 is opened and first tried there is always a falling, from the effects 

 of pumping, until the proper level is reached. In the Trafalgar 

 Square well, which was sunk in 1844, the punqaing of 100 

 gallons a minute for 48 hours lowered its surface 4 feet, and it 

 has ever since maintained the same standing-level, varying only 

 with the reason. The Society's weU has only been lowered IG 

 inches by the same amount of pumping. The supply from the 

 Society's well may, therefore, be fauly reckoned to be many times 

 larger than that from the Trafalgar Square well, which previously 

 was the largest in London. It will also be obsei-ved, that the 

 standing-level of the Society's well is, in point of flict, actually 

 considerably higher than that of the well in Trafalgar Scjuare. 

 This may perhaps be accounted for by the greater number of 

 other Artesian wells sunk to the eastward of the latter, and 

 possibly also by its being nearer to the outlet of the water. The 

 Society's well may therefore be regarded as the finest in the me- 

 tropolis ; and could it be utUised it would — on the same rates 

 as those charged by the Water Companies, viz. 6t/. per 1000 

 gallons, and allowing for larger engines to work it — yield a 

 gross yearly return of 7500/., or above 5500/. net profit. 



