THE NEW ENGLAND STATES. 95 



BHODE ISLAND. 



OCHEB SPRING. 



tfisc. Div. No. 2425. 



Gases. 1 



cc 



Carbon dioxid (free) 4. 4 



Carbon dioxid (set free from bicarbonate upon evaporating to dryness) 10. 1 



Hydrogen sulphid 



Sanitary analysis. 



Parts per million. 



Ammonia, free Trace. 



Ammonia albuminoid 0. 030 



Nitrogen as nitrites 000 



STitrogen as nitrates 404 



)xygen required 



Bacteriological data: 



Organisms per cc on plain agar after 48 hours at 37 C 5 



Organisms per cc on neutral red agar after 48 hours at 37 C 1 



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 



' Ochee Spring is situated about 3 miles from Providence, R. L, 

 and is owned and operated by the Ochee Spring Water Co. The 

 spring Was visited December 2, 1907, samples directly from source 

 being obtained for examination. The flow was approximately 120 

 gallons per minute, with a temperature of 50 F. Chemical analysis 

 shows this to be a calcic, bicarbonated water of the alkaline type. 

 The hypothetical combination indicates that of the salts in solution, 

 approximately 64 per cent are present as bicarbonates of calcium and 

 magnesium, 10 per cent as sodium sulphate and a smaller quantity as 

 magnesium sulphate. The sanitary analysis shows only small quan- 

 tities of ammonia and nitrates with a very low bacterial count, which 

 indicates organic purity. Inspection of the premises failed to reveal 

 any probable source of pollution. The advertised analysis varies 

 somewhat from the analysis of this bureau, especially in content of 

 iron and calcium. 



1 At C. and 760 mm pressure in 1,000 cc of water. 



