we 
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s 4 
definite decision in regard thereto. It becomes however, 
XXXVI. _ HYDRAULIC ASPECT OF THE. ARTESIAN PROBLEM. 
complicated unless the heights are ascertained initially, as 
will hereinafter appear. 
3. The intake area.—The exact location of the intake 
area as a factor in the solution of the problem, is of course 
extremely important, for the reason that if its minimum 
height be determined, it will at once shew what the greatest 
hydrostatic head available is; that information together 
with the volume and rate of efflux from the various bores, 
will go far towards revealing the condition in respect of 
motion, of the water in the artesian strata. The ascer- 
tainment of the extent of the intake area is also a weighty 
factor, since together with the extent of rainfall thereon, 
it will afford a basis for estimating how far it is safe to 
exploit the artesian water, without risk of exhausting it. 
One of the most important aspects of the problem suggests 
itself in this connection, viz., in what condition is the water 
in the artesian stratum ? 
4. Is the condition hydrostatic or hydraulic ?2—Was the 
water in a state of motion, or quiescent when initially 
tapped? If, as has been alleged and as seems probable, it 
was flowing, then the area of the intake and the quantity 
of rainfall, etc., giving the absolute quantity of water find- 
ing its way into the artesian strata, does not afford sufficient 
information, and the problem becomes greatly complicated, 
inasmuch as it will be necessary to ascertain the rate of 
flow or rate of loss through flow, and also the direction of 
the flow in order to ascertain exactly how far it would be 
safe to draw upon it by artesian wells. This question 
would be partially soluble, were it possible to know at each 
artesian well the absolute height to which the water would 
rise, if the bore be lengthened upwards. But it would not 
be completely solved for reasons hereinafter stated. 
