48 THE THERMAL SPRINGS OF SELANGOR AND MALACCA. 



Hydrogen Sulphide, ... 

 Boric Acid, 



... 0.030 pa 



Carbonic Acid, 



... 0.81 „ 



Nitrogen „ 

 Organic Matter, 

 Silica, 



... 0.08 ,, 

 ... 0.09 ,, 

 ... 1.765 „ 



Total,... 3.9942 „ 



Composition of Gases escaping from Spring. 



Nitrogen, 98.1% by volume 



Carbonic Acid, ... ... 1.9% ,, 



Hydrogen Sulphide, ... .. 0.3% ,, 



100.3 



Composition of Air close to Spring. 

 Oxygen, ... ... 20.90% by volume. 



Nitrogen, 79- IO /£ 



Carbonic Acid, ,.. ... 0.06% ,, 



100.06% 



Semuniah Spring. 



Temperature, ... 45-50°C. (1 13-122 F.). 



Hardness, ... ... 3.4 grains per gallon. 



Chlorine, ... ... 0.5 ,, ,, 



Total solids dissolved in the water, 20.5 „ ,, 



Free Ammonia, ... ... 0.04 parts per million, 



Albuminoid Ammonia, ... 0.05 ,, ,, 



Constituents contained in 10,000 parts of the water: — 

 Calcium Carbonate, ... ... 0.21 parts in 10,000. 



Sodium ,, ... ... 0.1900 ,, ,, 



Ammonium ,, ... ... 0.0015 ,, ,, 



