~-100 JOHN C. H. MINGAYE. 
(47.) *Water from a bore put down at Youngerrina, depth 168 — 
feet, temperature 82° F. 
Grains per Gallon. In 1000 Parts 
Total fixed matter = ... 32°984 Tee 
Soluble saline matter ... . OL892) 
Insoluble mineral matter ..« (1 -092-aaee 0156 
Chlorine in combination o> § 100° 
Equal to Chloride of Sodium... 8-404... ‘1200 
The soluble saline matter consists mainly of alkaline carbonates, 
chloride of sodium, silica, with strong traces of lime, magnesia, 
‘sulphuric acid, etc. The insoluble matter almost entirely consists 
“of silica, with traces of carbonates of lime and magnesia. Water 
clear, free from odour and matters in suspension. Before evapor- 
ation, and after, gave a strong alkaline reaction. Suitable for 
domestic uses, stock, and irrigation purposes. 
(48.) *Water from a bore put down at Native Dog, depth 475 feet, 
temperature 92° F. 
Grains per Gallon. In 1000 Parts 
Total fixed matter ae ..  40°108 . (Gea 
Soluble saline matter ... ... 44044 ... 6292 
Insoluble mineral matter vo! = OC RR 70152 
Chlorine in combination .«. 4°500 _ Stes 
Equal to Chloride of Sodium... 7415 °«... +1059 
The soluble saline matter consists mainly of alkaline carbonates, 
chloride of sodium, silica, and strong traces of lime, magnesia, 
and sulphuric acid. The insoluble of silica, and traces of car- 
bonate of lime and magnesia. ‘The water gave an alkaline reaction 
before and after evaporation. The quantity of water received in 
both samples was too small to enable a more detailed analysis 
being made. Both these waters may be used for irrigation pur- 
poses, and are suitable for all domestic uses. 
*Tt will be observed that the saline matter consists mainly of carbonated 
alkali, which are known when present in large quantities to exert a 
serious influence on plant life, by their corrosive action on the young 
roots etc. The action can to a great extent be remedied by the addition 
of a small quantity of gypsum to the soil prior toirrigation. The amount 
of alkaline carbonates present in these.waters is much too small to con- 
demn them for irrigation purposes. 
