Mr. Boultbee says that he has excellent authority for stating 
430 T. W. E. DAVID. 
that live fish were thrown out of the Youngerrina Bore in New 
South Wales when the water was first struck. The statement 
however, has not yet received confirmation. It is to be hoped 
that steps will be taken to test this question by allowing the water 
from the bore to flow through fine netting. He also states that 
by direction of Mr. Harrie Wood, steps are being taken to gauge 
the flow and pressure at all the Government artesian bores. 
With regard to the suggestion by Mr. R. L. Jack, that increase 
in temperature of the water, aided presumably by capillarity, may 
assist in forcing artesian water to the surface, and as possibly 
having some bearing upon the tide phenomena described above 
the following calculations might be given :—The superficial area 
of the Cretaceous rocks in New South Wales is estimated as 
62,000 square miles, but the area of the porous beds is less by 
perhaps as much as about one-third. The area of the porous beds 
of the Lower Cretaceous in New South Wales being taken as 
40,000 square miles, and the average thickness of the porous beds 
as ten feet, (a minimum estimate) and the imbibition of the porous 
beds being taken as about two and a-half gallons per cubic foot, 
then the quantity of water stored in these beds would amount to 
27,878,400,000,000 gallons, a quantity which, (if the supply were 
being continually replenished so as to maintain a constant pressure) 
would supply the whole of the present yield of the artesian wells 
of New South Wales for 1,863 years, and an expansion of the 
water to the extent of about 3+; of an inch vertically in this thick- 
sheet, would keep the whole of the artesian wells of New South 
Wales overflowing for one year. Such an expansion would be 
caused by raising the temperature of the water in the undersheet 
from 70° Fah. to 744° Fah., and the water at several of the wells 
as has been shown, has had its temperature raised by over 70° 
Fah. The resulting expansion would be twenty-six times as much 
as in the case first mentioned, and would be sufficient to keep the 
present artesian wells supplied with water for twenty-six years, 
