270 
PROCEEDINGS OF SECTION B. 
On comparing the analyses of these waters, it will be observed 
that they yield total solids varying from 38' to 396' grains per imperial 
gallon. 
Waters yielding such large proportions of saline matter as con- 
tained in the waters of the Opera, Barrona, Tinchelooka, and Cuttaburra 
Bores are useless for irrigation, their continual use tending to kill all 
useful vegetation. 
The waters from tlie Sibraas, Moongulla, and Dungle Eiclge Bores 
contain rather a large amount of saline matter in their composition ; 
but with careful use, deep drainage, and the occasional addition of 
gypsum to the soil they possibly could be used with no ill effects. 
Waters such as obtained from the Kelly’s Camp, Yantabulla, 
Enngonia, Belalie, Tverribrec Creek, Barringuu, Corrella Nos. 1, 2, and 3, 
Waroo Springs, Native Dog, and Youngerrina Bores — although 
containing carbonate of soda in their composition, the total solid 
matter present being small — may be used for irrigation, every care 
being exercised, if found necessary, to neutralise the corrosive action 
of the alkali. A thorough system of deep drainage is required, and 
rotation of crops, as it is well known that Sheets, &c., absorb a large 
amount of soluble salts. It has been stated that the artesian waters 
are unsuitable for wool-scouring; but the majority of them are, 
without doubt, eminently suited for that purpose, from the alkaline 
carbonates present, which renders the waters “ soft.” Mr. J. B. 
Christians, of Brendingabba Station, Ilungerford road, informs me 
that he has used these waters, and obtained excellent results from 
them ; 1,000 bales, washed bv artesian waters, averaged Is. 3id. per lb. 
These waters, I am informed, are also used in parts of Queensland for 
that purpose by Messrs. Collings, White, and Co., Eulolo Station, near 
Rockhampton. 
ANALYSES OF WATERS FROM ARTESIAN BORES, NEW SOUTH 
WALES. 
ANALYSIS OF WATER FROM OPERA (25-MILE) BORE. 
Bore 791. — Sub-artesian, water running to within 18 feet of 
the surface ; estimated at 10,000 gallons per diem ; on the Louth- 
Wanaaring road, near Bourke. 
Grains per gallon. In 1,000 parts. 
Silica 
•996 
00142 
Sodium chloride ... 
... 278-382 
39769 
Potassium chloride 
... 12-274 
T753 
Calcium chloride 
5-838 
*0834 
Magnesium chloride 
6"580 
T169 
Calcium carbonate 
8-190 
•0940 
Sulphuric anhydride 
Trace 
Trace 
Organic matter ... 
... Trace 
Trace 
Total solid matter ... ... 312 260 4'4607 
A strong saline water unsuitable for human consumption, and 
useless for irrigation. 
* Reports of Examinations of Waters, & c., by Prof. Hilgard, College of Agri- 
mlture, California. 
