76 JOHN C. H. MINGAYE. 
(2.) Spring Water from Jenolan Caves. 
Grains per Gallon. In 1000 parts. 
Carbonate of Lime ... ‘ae, OS oan 0:0984 
Carbonate of Magnesia a L060 om ‘O151 
Silica 2.. ee, As ae a OO ae 0108 
Alumina che ae ie, “race Se trace 
Chloride of Sodium .... se 856 i ‘0122 
Trace oforganic matter, Nitrates, &c. -558 =o ‘0079 
10:118 ne 0:1444 
Total Solid Residue dried at 220° F.= 10-108 grains per gall. 
Free Ammonia... ee ... ‘0052 pts. per 100,000 pts. 
Organic or Alouminoid Ammonia ‘0040 ss be 
An excellent description of spring water suitable for all purposes. 
{3.) Water from Nymagee, used for domestic purposes. 
Soluble saline matter ... 13:300 grains per gallon. 
Insoluble mineral matter ... 6°300 bs 
Loss on ignition ... w. 4°284 is 
23°884 
Free Ammonia ... ... ‘078 pts. per 100,000 pts. 
Organic or Albuminoid Ammonia -048 ‘ - 
Phosphoric Acid, strong trace. | 
Chlorine... Res oe ... 5°20 grains per gallon. 
Nore.—The water when heated gave off an unpleasant smell. 
The residue on ignition strongly darkened, emitting a foul odour, 
thus showing the presence of a considerable amount of organic 
matter. The soluble saline matter consists mainly of chloride of 
sodium, chloride of magnesium, with strong traces of sulphate of 
lime, nitrates, etc. The insoluble of clay of carbonates of lime and 
magnesia, silica, etc. The water was condemned as totally unfit 
for human consumption. 
