Syl tals ai tc ee 
WATER SUPPLY IN THE INTERIOR OF NEW SOUTH WALES. 105 
four years ago, I saw an earthen dam which had been placed in 
the course of the Narran, and raised above the level of the 
b 
as quite as deep as the old one, and looked as if it had been 
Bertpied by the river for ages. Knowing that in many places large 
areas of very valuable country are situated more than 100 miles 
r 
which sheep have of travelling in single file soon cuts out a track 
a few inches deep, and wherever these tracks happen to have the 
same direction as the fall of the country, the water is concentrated 
hen it rains, and a small channel cut out. The accumulated 
effects of this process over an immense area of country must in 
Ballonne, it does not now take half the amount of rain to put 
water in the rivers that it did thirty years ago, just after it was 
first settled. 
Next, we come to the method of watering dry country which is 
most common,—I mean by means of excavated tanks and drains. 
squatters u 
wells would be far superior ; and artesian wells are above every- 
thing else if they could only be bored with a reasonable certainty 
be 
made where the natural features of the country are suitable, ~~ 
the choice in this respect is so limited that they can never beco 
