THE NEW ENGLAND STATES. 71 



MASSACHUSETTS. 



EL AZHAR SPRING. 



Misc. DIv. No. 4712. 



Gases. 1 



cc 



Carbon dioxid (free) 6. 7 



Carbon dioxid (set free from bicarbonate upon evaporating to dryness) 2. 2 



Hydrogen sulphid 



Sanitary analysis. 



Parts per million. 



Ammonia, free Trace. 



Ammonia albuminoid 0. 065 



Nitrogen as nitrites Ft. tr. 



Nitrogen as nitrates 350 



Oxygen required 040 



Bacteriological data: 2 



Organisms per cc on plain agar after 48 hours at 37 C 



Organisms per cc on neutral red agar after 48 hours at 37 C 



Gas-forming organisms in 5 cc 



Gas-forming organisms in 1 cc 



Gas-forming organisms in 0.1 cc 



Gas-forming organisms in 0.01 cc 



El Azhar Spring is situated at Lowell, Middlesex County, Mass., 

 and is owned and operated by the El Azhar Spring Water Co. It 

 was visited August 30, 1907, samples directly from source being 

 obtained for the examination. This spring has a very large flow 

 and a temperature of 49 F. Chemical analysis shows this to be a 

 very lightly mineralized, sodic, bicarbonated water of the alkaline 

 type. The hypothetical combination indicates that 43 per cent of 

 the salts hi solution are in the form of the bicarbonates of sodium, 

 magnesium, and calcium, 6 per cent of sodium nitrate, 10 per cent of 

 sodium chlorid, and 7 per cent of sodium sulphate. The sanitary 

 analysis shows a small amount of albuminoid ammonia, faint traces 

 of nitrites, and low nitrates. The advertised analysis quoted above 

 is incomplete and is of little value for purposes of comparison. 



i At C. and 700 mm pressure In 1,000 cc of water. * No bacteriological samples taken. 



