THE NEW ENGLAND STATES. 53 



NEW HAMPSHIRE. 



LAFAYETTE MINERAL SPRING. 

 Misc. Div. No. 4716. 



Gases. 1 



cc 



Carbon dioxid (free) 2. 9 



Carbon dioxid (set free fro'm bicarbonate upon evaporating to dryness) 12. 8 



Hydrogen sulphid 



Sanitary analysis. 



Parts per million. 



Ammonia, free 0. 020 



Ammonia albuminoid 030 



Nitrogen as nitrites Ft. tr. 



Nitrogen as nitrates 075 



Oxygen required 030 



Bacteriological data: 



Organisms per cc on plain agar after 48 hours at 37 C 14 



Organisms per cc on neutral red agar after 48 hours at 37 C 3 



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 



Lafayette Mineral Spring is situated at Deny, Rockingham 

 County, N. H., and is owned and operated by the Lafayette Mineral 

 Spring Co. It was inspected November 28, 1907, samples directly 

 from source being obtained for examination. The flow was approxi- 

 mately 3 gallons per minute at a temperature of 47 F. The 

 chemical analysis shows this to be a moderately mineralized, calcic, 

 sodic, bicarbonated water of the alkaline type. The hypothetical 

 combination indicates that approximately 59 per cent of the salts in 

 solution are present as bicarbonates of lime and magnesia and 15 per 

 cent as sulphate of soda, with a smaller amount of bicarbonate of 

 soda. The sanitary analysis shows small quantities of free and albu- 

 minoid ammonia and a faint trace of nitrite. The bacterial count is 

 low, but gas-forming organisms were determined in 1-cc quantities. 

 Inspection of the premises revealed them to be in a far from sanitary 

 condition, as the spring was not properly protected, evidently being 

 capable of contamination by surface drainage. The advertised anal- 

 ysis, with the exception of magnesia, agrees fairly with that made by 

 this bureau. 



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



