496 



Transactions . — Ch emis try . 



sulphuretted hydrogen. The reaction of the water was dis- 

 thactly alkahne to cochineal solution. Specific gravity at 

 62° Fahr., 1-00022. 



The quantity of dissolved mineral matters present was 

 found to be low — only little more thcin 12gr. per gallon. The 

 composition of the same is shown by the following analysis : — 



Totals 



180-00 



12-600 



These results may theoretically be arranged as follows :- 



Potassic sulphate 

 Sodic sulphate 

 Sodic chloride 

 Sodic sulphide 

 Sodic silicate. . 

 Calcic silicate 

 Calcic carbonate 

 Magnesic carbonate 

 Alumina 

 Free silicic anhydride 



Totals 



Parts per Million. 



4-79 

 57-03 



5-74 



6-45 

 00-89 



4-86 

 16-32 



4-15 



3-00 

 14-76 



177-99 



Grains per Gallon. 

 0-335 

 3-992 

 0-402 

 0-452 

 4-262 

 0-340 

 1-142 

 0-291 

 0-210 

 1-033 



12-459 



The total sulphuretted hydrogen in the water amounted to 

 11-8 parts per million, equal to 0-826gr. per gallon. Of 

 this, 2-8 parts per million were in a combined form. Ammo- 

 nia salts were present to the extent of 0-87 part per million, 

 reckoned as ammonia, while albuminoid nitrogen, or that 

 existing in an organized form, amounted to 0-18 part per 

 million. Only a trace of nitrates existed, not sufficient for 

 determination. No iodine or bromine was detected. The 

 quantity of water available for testing for these elements, 

 however, in consequence of an accident to one of the bottles 

 in transit, was not sufficient to prove their absence with abso- 

 lute certainty-. A spectroscopic examination showed the 

 absence of lithium. 



From the results obtained this water might be termed 

 siliceous and sulphurous. It is essentially different from the 

 water from the Hanmer Springs, and pertains more to the 

 character of the waters of the Eotorua district, reported on by 



