ANALYSES OF WELL, SPRING, MINERAL, AND ARTESIAN WATERS. 95 
(35.) Gunnedah.—Water from a well seventy feet deep, with 
twenty-eight feet of water, which is soft and potable when 
fresh. 
Grains per Gallon. In 1000 Parts. 
Soluble saline matter Hee eVeNS OG) AR ee me eral es 
Insoluble mineral matter ... ee SA le E22: 
Total solids ae 1. 58:56 8365 
Chlorine in combination ... a SOKO) ea eres 
Remarks.—The soluble matter was found to consist largely of 
sulphate and chloride of sodium and potasium, alkaline, carbonates 
etc. The insoluble of carbonates of lime and magnesia, silica, 
alumina, etc. This water may be used for watering stock, and 
irrigation purposes. The sample received was very small and 
not properly taken, consequently the organic impurities were not 
determined. 
(36.) Dubbo.—Spring water obtained from the base of a high 
mountain near Dubbo. 
Total solid matter se). ... 6°608 grains per gallon 
Chlorine in combination ... 2°500 sé 
Free Ammonia ... ous ... trace per 100,000 parts 
Albuminoid Ammonia ... sao) SOMO ae bap 
ReMARKS.—The total solids consisted mainly of chlorides of 
magnesium and sodium, sulphate of lime, organic matter with 
traces of silica, oxide of iron, and alkaline carbonates. The water 
when viewed through a two feet tube was of a pale green colour. 
A small amount of suspended matter was present, consisting of 
small particles of vegetable matter, which accounts for the albu_ 
minoid ammonia found. The residue darkened on ignition, thus 
showing the presence of organic matter. It was thought that 
this water might possess medicinal qualities, and may be described 
as an ordinary spring water having no medicinal properties, 
but useful for domestic, stock and irrigation purposes. 
