ANALYSES OF WELL, SPRING, MINERAL AND ARTESIAN WATERS. 111 
being set to the acre, and from them excellent supplies of firewood 
are obtained. Land planted with Eucalyptus which was previously 
valued at £2 to £5 per acre becomes worth from £20 to £80 in 
six or eight years, The official returns show a profit of £3 10s. 
per acre upon plantations which raised the value of property from 
£20 to £120 per acre in eleven years. 
Mr. J. H. Maiden, F..s. &c., has pointed out the profit derived 
from the cultivation of the wattle barks, and I would suggest an 
increased value by means of irrigation where the water supply 
can be conserved at a small expense, say in flood time. 
Value of Spring, Well, and Artesian Supplies for Irrigation. 
To a large extent in various parts of the Colony, especially in 
the Western District where the supply from rivers and creeks are 
not available, we will have to rely on our artesian bores and wells. 
The use of these waters are largely availed of in America for the 
irrigation of small farms and orchards. 
In the Los Angeles District and San Bernardino Countries in 
California, there are springs or marshes which are capable of 
irrigating from 20 to 400 acres each, and together supply an area 
of 7,000 acres of cultivated land. 
At San Gabriel, California, a vineyard 1,200 acres in extent is 
supplied solely by artesian wells of which there are twenty-one on 
the estate, varying from seventy-five to one hundred feet deep. 
In Santa Clara Country, Cal., there is an artesian tract yield- 
ing 2,000,000 gallons every twenty-four hours. 
In California at Florin, water is raised from depths of ten to 
twenty feet in a steady stream by means of windmills, one of 
which it is stated can supply twce to three acres of land with water, 
the machinery costing about £25 complete. 
The New River from which the London Water Supply is 
obtained, is partly supplied from artesian wells at Amwell and 
Chatfield, yielding some 4,500,000 gallons per day. 
