—— may be made to hold in the excavation and above the 
r ithin the embankment about 6,750,000 gallons - water, 
about laimeestaeatbe of this being above the siurface: It ould be 
4 
would remove something more than 2,800,000 gallons, 
leaving 3,900,000 gallons for the use of the sheep for one year. 
ousand sheep at one gallon each per day would use a 
little 0 over 4,000,000 gallon 
It will be seen from this ‘that a tank such as I have described, 
though of at least four times the capacity of most of the tanks in 
the western country, would not carry the number of sheep that 
hro 
cubic yards excavation, made in the same way as the one above 
described. These are my reasons for saying that some wells 
should be made if possible on — station as a last resource, and 
as the only means of keeping a remnant of the stock on the station 
if no rain sufficient to fill the fanies br aad fall for a — pe eriod 
than three years. For my own*part, in spite of all w r from 
old settlers, I do not believe there ever has been a sobisil “of three 
years during which over any considerable extent of country there 
was no rain or storms sufficient to filla tank with a good hard 
catchment area. In nearly every part of the western plains, when 
particles and the homogeneous nature of the clay. There are no 
veins of gravel such as we find in the more broken country, and 
the whole e appearance of the formations indicate a sameness con- 
sme over long periods in the conditions under which they were 
depo If a tank is not quite watertight at first, the Pi fee 
sedin a eee with the water will generall 
time, more particularly if the slopes are not too steep. va oie 
ing dry country, —— a tank will water a 
