justifiable as regulation of such trade, is a violation of s. 92.
Tt is not to the point that any such interference or restriction may
leave unimpaired the total volume of trade from State to State or,
that it is not the purpose of the legislation to create interference
with or impose restrictions upon inter-State trade as such, or that
the legislation is not "directed against" or not "aimed at"
inter-State trade. As the Judicial Committee pointed out " in
whatever sense the word ' object' or 'intention' may be used in
reference to a Minister exercising a statutory power, in relation
to an Act of Parliament, it can be ascertained in one way only,
which can best be stated in the words of Lord Watson in Saloman
y. Saloman & Co. (1) 'in a Court of Law or equity what the legis-
lature intended to be done or not to be done can only be legitimately
ascertained from that which it has chosen to indicate, either in
express words or by reasonable and necessary implication'. The
same idea is felicitously expressed in an opinion of the English
law officers, Sir Roundell Palmer and Sir Robert Collier, cited by
Isaacs J. in James v. Cowan (2): 'It must be presumed that a
legislative body intends that which is the necessary effect of its
enactments: the object, the purpose, and the intention of the
enactment, is the same'. The same learned judge adds "by the
necessary effect', it need scarcely be said, these learned jurists
meant the necessary legal effect, not the ulterior effect, economically
or socially, It was because Section 20 of the Dried Fruits Act of
South Australia operated according to the natural meaning of its
words to authorise a direct restriction upon the manner in which
James could dispose of his product by an inter-State transaction
that it offended Section 92, not because some other extraneous
purpose, object or intention was ascribable to the South Australian
legislature". These views of the Judicial Committee Jed, immed-
iately, to the conclusion that s. 46 (1) of the Banking Act 1947,
which provided that a private bank should not after the commence-
ment of the Act carry on banking business in Australia, except as
thereinafter required by the section, was invalid. Nor can I see
that the decision would have been otherwise if the section had in
substance provided that a private bank should not carry on banking
business in Australia unless it was the holder of a licence which
might be granted or withheld at the absolute discretion of a licensing
authority. For if the legislature itself may not, without infringing
s. 92, assert a right, at its absolute discretion, to permit or prohibit
banking, it is, to me, inconceivable that it may, without infringing
s. 92, confer such a right upon a subordinate body. This, of course,
2; 47 C.L.R. 386.