CXXX. IRRIGATION GEOLOGICALLY CONSIDERED. 
tively from the east side of the basin, the central portions, 
and the west : 
Total solid 
Locality. matter in | NaCOg | K,CO, | CaCOg | MgCOg 
grains per 
gallon. 
1. Moree ... as ...| 49°78 39°26 1-10 64 29 
2. Euroka (Walgett) ...| 75:21 56°49 at *25 trace 
3. Kelly’s Camp... ...| 35°08 16°87 5°67 ‘69 trace 
4. Wanaaring ... ...| 50°63 35°79 1:28 1°30 "19 
Locality—continued. NaCl K,SO, yea . SiO; Organic 
Al,05 Matter. 
1. Moree ... ee soo) COR et trace 1°46 trace 
2. Euroka (Walgett) ...| 15°32 1°28 ane a at 
3. Kelly’s Camp... Pe ag oll ne "20 1°32 2°44, 
4. Wanaaring ... cea Oe89 bia As 1°68 trace 
It is noticeable that the chief mineral constituent of the 
water in nearly all New South Wales artesian water is 
carbonate of soda, the next most important being chloride 
of sodium. The total solid matter varies from 31°50 to 
396°387 grains per gallon; the latter is however exception- 
ally high, and the average according to sixty-five analyses 
is about 85 grains per gallon. It has been observed that 
the proportion of mineral matter is usually higher in those 
bores in which a sub-artesian supply only has been obtained, 
and the same rule appears to apply to bores which have a 
very limited flow. 
Gases in bores.—A distinguishing feature of the artesian 
water obtained from bores in New South Wales is a strong 
odour of sulphuretted hydrogen, which is very noticeable 
in the water when it first issues from the bores, but which 
speedily passes off after exposure to the atmosphere. Mr. 
W. M. Hamlet, Government Analyst, however, states that 
aiter visiting a number of the bores, and subjecting the 
water to careful tests, he was unable to obtain any reaction 
for that gas or for free sulphuric acid. With the exception 
of the Ballimore Bore near Dubbo, which yields a flow of 
