customs - is expressly, by secs. 106 and 107, eliminated from State
Constitutions, because made exclusive by sec. 52, and transferred -
co nomine to the Commonwealth, its control is necessarily by force of
the very words of the Constitution placed outside the ambit of the -
State Constitutions and beyond any power of the State to affect it.
No State Act can operate on that extraneous field. In the event of
an existing Commonwealth power and an existing State power being
simultaneously exercised on their admitted respective and concurrent
fields, then, if there be conflict at any point, sec. 109 applies to
adjust the matter. The doctrine that "implied prohibitions" are
inadmissible to cut down the exercise of an admittedly granted
governmental power is not inconsistent with the position (1) that
the State Parliament cannot legislate at all so as to bind the Crown in
right of the Commonwealth in the exercise of the very governmental
functions expressly taken from the States and exclusively vested in the
Commonwealth, and (2) that, where there is found inconsistent
Commonwealth and State legislation, both competently enacted as far
as the range of constitutional power is concerned, the former prevails.
The first of these two considerations is inseparably connected with
the construction of sec. 24 of the Victorian Motor Car Act, and so
necessarily involves the construction of the Constitution with
reference to the limits of powers inter se. Consequently, the first
point, namely, the construction of sec. 24, before the Supreme Court,
could not be dealt with as an ordinary matter of verbal interpretatio
Their Honors, after partly hearing the case, obviously perceivi
that position and, seeing that, however regarded, the matter involved.
a constitutional question inter se, falling within the terms of sec. 404
of the Judiciary Act, declined to proceed further, and allowed
section to operate of its own force. The limits inter se of thi
respective constitutional powers of Commonwealth and State cat
into question in a double aspect. They arose, as already shown, i
controversy between the litigants, requiring the decision of some
Court of Justice. But again they arose when the question presen!
itself: Which Court? The State Court - apart from the Common-
wealth Judiciary Act - would have had ample jurisdiction
determine the controversy as to whether the defendant
transgressed the State Motor Car Act 1915. The fact that '