426 Transactions.— Chemistry. 
taken by the local press at the time of its collection. It is from a spring at 
Hikutaia, Puriri, provincial district of Auckland; collected and contributed 
by Mr. Robert Kelly, on whose property it is situated, and was received at 
the laboratory on January 5, 1873. Waters of this kind are chemically 
distinguished by their more or less caustic taste, which they owe to the 
large quantity of fixed carbonated alkalies (principally of soda) that they 
contain. 1 
They are used medically for the cure of gravel, kidney diseases, gout, 
acidity of stomach, etc. 
The value of this water medicinally, as alleged by the Maoris, is no 
doubt due to the large amount of carbonate of soda which it contains, as 
iodine only exists in very small quantity, and I have not succeeded in 
determining the presence of any other substance known to possess (as a 
component of mineral waters) specially medieal qualities. 
In the annexed analysis the composition of the fixed matters present in 
one gallon of this water is stated in grains :— 
Soda ii m S. Am «+ 199-010 
Potash s e P i š% 2-587 
Lime Mm i a a s 11-088 
Magnesia ee és či die ME 8:008 
on cem se M Hes I traces 
Silicic acid  .. ok a Te i 2:772 
Sulphuric acid em x is cx 2:903 
Carbonie acid a SR «d .. 800-488 
Phosphoric acid } as .. a little 
Chlorine with iodine traces sd x 13:313 
540:119 
These constituents permit of pc i d as follows :— 
Chloride of sodium x = 21:938 
Iodide of magnesium .. m T os traces 
Sulphate of soda iz =i AE Kk -940 
potash in : i is 4:938 
Carbonate of iron = ss oe traces 
Bi-carbonate of lime .. a os bs 28:506 
» magnesia va ; *» 25:625 
2 soda  .. k: «« - 452-898 
- lthia .. os E» es 
Silica ee ee oe - - 2:772 
Phosphoric acid es T " not determined 
