LIV. R. T. McKAY. 
cretaceous formation in a sufficient degree to be worth 
consideration for the present purpose. Suppose the beds 
to dip seaward and beneath the sea, and either to rise to 
the ocean bed or to dip at a lower angle than the slope of 
the sea bed, there would be a leakage into the sea; and 
again suppose the outcrops of the beds to occur at gradu- 
ally lower levels till it attains the sea level, there would 
be a leakage in the form of springs or into river beds all 
along the line. In either case the leakage, however com- 
pact the beds might be, would not cease till the water- 
level in the beds was reduced to the level of the sea, unless 
the head of water were from time to time replenished. 
Intake Beds of New South Wales.—In New South Wales 
a Wide belt of very porous sandstone outcrops on the east 
side of the artesian area. The eastern margin of the intake 
beds in New South Wales can be traced as far south as the 
Town of Dubbo, and they form part of the western flanks 
of the Dividing Range. They dip gently westward, and it 
is believed that they are continuous under the cretaceous 
rocks for the whole width at least of the portion of the 
artesian area which lies in thisState. Asregards altitude, 
the intake beds attain an elevation of from 1,200 to 2,250 
feet above sea level... Mr. EK. F. Pittman, Government 
Geologist of New South Wales, states” that the evidence is 
conclusive that the Triassic sandstones, and not Blythesdale 
Braystone, form the storage beds of the New South Wales 
artesian area. Although there may be local evidence of 
thinning out of the basal beds of the lower cretaceous 
against the triassic strata in New South Wales, no distinct 
evidence has been obtained as to there being any uncon- 
formity between the two formations. The Queensland 
geologists state that they have observed such unconformity 
1 Trrigation Geologically considered by Professor David and Mr. E. F. 
Pittman, this Journal, Vol. xxxvi1., 1903. 
3 River Resources, p. 460. 
