116 JOHN C. H. MINGAYE. 
for a second seam of coal ten feet below the first seam, artesian 
water commenced to flow to the surface, and it is now flowing at 
the rate of 1000 gallons per hour, through tubing thirty feet above - 
the surface.” | 
The Rock Flat Mineral Spring is situated about ten miles to 
the S.E. of Cooma, and occurs in close proximity to the western 
bank of Rock Flat Creek, in the parish of Dangelong, County of 
Beresford. For a description of this spring and the geological 
formation of the surrounding district and the geology of the im- 
mediate vicinity of the spring, I refer you to a paper by Mr. Wm. 
Anderson, Geological Surveyor, entitled —“‘On the Mineral Spring 
at Rock Flat Creek, near Cooma.”* 
The Ballinore artesian water is in my opinion the best table 
water of the two, and they may be both classed as excellent. 
+ A water similar in composition to these waters is found in a 
spring at Napa Country (America), the water being clear, strongly 
effervescent and of a pleasant taste :— 
Analysis— In 10,000 Parts. 
Total solid residue after evaporation es vo  LosGss 
Soluble part after evaporation He Bs a) Se aOe 
Insoluble part after evaporation ... : hl ee 
Chemically combined water, Carbonic Acid etc. yae 840 
Soluble part consists of—Bicarbonate of Soda ... 5648 
Sulphate of Soda 044 
Common Salt... oa 8Re 
Chloride of Magnesium... ‘408 
Potash Salts —... 1.» tigger 
Insoluble part consists of—Carbonate of Lime ... 2-950 
Carbonate of Magnesia... 1°339 
Carbonate of Iron Be 134 
Silica... oe : 832 
Free Carbonic Acid gas, 335 cubic inches per g cae 
* Records of the Geological Survey of N.S. Wales, Vol.1. part iii. p.117. 
+ Waters and Water Supply by Prof. Hilgard, University of California. 
