on which is erected a dwelling-house has informed the Treasurer
that he intends to live in the dwelling-house, the applicant shall
not, without the consent in writing of the Treasurer, let the land."
_ This regulation suggests, though it does not actually provide, that
_ the Treasurer may inquire whether a house is intended to be used
for the purposes of a residence for the purchaser, and that he may
take the reply to his inquiry into consideration when he is deciding
whether or not to give his consent to a proposed purchase. When
_ the Treasurer has before him particulars as to the matters mentioned,
_ heis then in a position to determine whether, having regard to these
matters, consent should be given. It is in relation to these considera-
_ tions that the Treasurer has an absolute discretion - to say "' Yes"
or "No," or to impose conditions. There is no indication in the
Regulations that, in a case to which the Regulations apply, the
_ Treasurer is to take into account any matter other than the proposed
terms of purchase, the estimated value of the land and, possibly,
in the case of a dwelling-house, the proposed use of the land. In
_ McCartney's Case (1) it was held that a discretion of one govern-
mental agency (a transport board) should not be exercised for the
purpose of giving effect to the administrative policy of another
_ governmental agency (the Victorian Railways Commissioners). So,
e, it should be held that the Treasurer should not, in determining
hether or not he should consent to a particular land purchase,
exercise his discretion in accordance with matters which are com-
_ pletely irrelevant from the point of view of the Regulations, e.g.,
the desirability of either encouraging or preventing transactions in
Commonwealth securities. The Regulations give the Treasurer no
'power to ascertain or to investigate the capacity of the proposing
_ purchaser to make or to maintain an investment in Commonwealth
ies. The relevant regulations deal only with purchases of
land. It is an improper use of the discretion entrusted to the
_ Treasurer by the Regulations to use them for the purpose of control-
ling dealings by land purchasers in other property.
_ Thus, in my opinion, the condition which the Treasurer has
sought to impose in the present case with respect to the deposit for
a period of Commonwealth bonds is not authorized by the Regula-
tions. For this reason, the plaintiff is, in my opinion, entitled to
_ adeclaration that, upon the true construction of the Regulations, the
_ Treasurer is not empowered to require compliance with the condition
stated in his letter relating to the deposit of Commonwealth securities.
(1) (1935) 52 C.L.R. 383.
VOL, LXIX. 41