CLX. ECONOMIC ASPECT OF ARTESIAN BORING IN N.S.W. 
occurs in an elongated oval area, some 56 miles long by 32 
miles wide. The borings extend over a great portion of it, 
and embrace Greeley, Colorado Springs, Pueblo, and other 
places. In Denver City alone, there are some eighty or 
ninety wells, giving a yield of 2,880,000 gallons per diem. 
The depths vary to 900 feet. The boring in this basin is 
remarkably good, many of the wells having been sunk at 
the rate of from 6 to 7 feet per hour, the cost of. drilling 
being about 8/4 per foot. There has been a certain amount 
of depletion going on in the basin. Whether owing to the 
multiplication of wells on the lower lying lands, or to 
bad work and imperfect casing, has not been definitely 
ascertained. The latter cause no doubt amply explains 
the reason in some ascertained cases. An enormous waste 
is taking place day by day, and if the supply has limitation 
it may possibly be exhausted in time, simply by waste and 
extravagance. The water is of great purity, and is used 
for all domestic purposes. The extent of artesian country 
reaching from San Antonio to the valley of the Rio Grande 
and the great Colorado desert is enormous, and much still 
has to be done there in the direction of boring. In the 
San Bernardino and Los Angeles districts there are over 
1,000 wells. In Utah much has been done; Kansas and 
Tdaho have added their quota of large flowing wells and 
hold up the enormous yields at Boise city and Moscow as 
examples. In North and South Dakota a great develop- 
ment—more especially in the use of the flow for irrigation 
—has taken place, perhaps more thaninany other part of 
America. In Louisiana much has been done, and still more 
remains to be done. In the Kern valley, from the limited 
area of 18 x 14 miles, the wells yield some 61,000,000 
gallons per diem, most of which is used for lucerne irriga- 
tion. It is more in the direction of individual effort, 
rather than by corporate work, that one finds the artesian 
water exploited for irrigation, though in the San Bernardino 
