154 PROCEEDINGS OF THE COTTESWOLD CLUB 



a degree by an artificial purification. There is no reason 

 why the Severn water should not be served with as great 

 a degree of organic purity as the water of the oolite 

 springs which in certain other qualities it excels under 

 any circumstances. 



The springs are not inexhaustible but the Severn can- 

 not be run dry. The supply of water to such a place as 

 Liverpool from one of its small tributaries has made no 

 perceptible difference to the water in the Severn or even 

 in the Vyrnwy, near its mouth, unless it be a difference 

 of advantage in the driest weather by reason of the 

 10,000,000 gallons of compensation water that has to be 

 turned daily from the reservoir into the stream. For 

 all towns in the middle Severn basin at least, no better 

 supply for drinking and all-round purposes is required 

 than that from the Severn, and none can be obtained. 



Mo 



Hardness in Clark's degrees, up to 

 rTotal solids 

 Nitrite 

 S^-jFree Ammonia 

 I Albuminoid Ammonia 

 n lOxygen consum'd in 4 hrs. 



(when water is of peaty origin) 



Bacteria 



