As to the law: s. 28 (1) (a) of the Lands Acquisition Act 1906-1936 provides that, in determining the compensation for land resumed, regard shall be had to the value of the land acquired; and s. 29 (1) (a) provides that the value of the land acquired by compulsory process shall be assessed according to the value of the land on 1st January preceding the date of acquisition, in this case on 1st January 1946. This Court decided in Spencer v. The Commonwealth [1] that the basis of valuation under the Lands Acquisition Act should be the price that a willing purchaser would, at the date in question, have had to pay to a vendor not unwilling, but not anxious, to sell. Where the land has a special value to the owner the Privy Council in Pastoral Finance Association Ltd. v. The Minister [2] stated the value to be the sum which a prudent purchaser in the position of the owner would have been willing to give for the land resumed sooner than fail to obtain it. However, when this land was resumed in December 1946 reg. 6 of the National Security (Economic Organization) Regulations was in force, and had been in force for some years; but it expressly provided that it did not apply to transactions to which the Commonwealth, among others, was a party, i.e. it did not apply to voluntary purchases of land by the Commonwealth or to compulsory acquisitions by the Commonwealth. If it were expressed to apply it would, I think, have been invalid, as denying the just terms secured by s. 51 (xxxi.) of the Commonwealth Constitution. See Johnson Fear Kingham v. The Commonwealth [3] . But in negotiations for such purchases the parties would be influenced by prices paid for comparable land during this economic control. Laws which did not directly apply to the transaction, but applied to other comparable transactions, would necessarily or probably affect the price to be arrived at (Nelungaloo Pty. Ltd. v. The Commonwealth per Latham C.J. [4] ). A price really agreed upon, even a price influenced by economic control, would be in conformity with the just terms requirements in s. 51 (XXXI.). But when the Commonwealth decides to exercise its compulsory powers during such economic control then, although Spencer's Case [1] and the Pastoral Finance Case [2] continue to apply, and a hypothetical vendor and purchaser continue to be postulated, still different considerations are assumed to influence them. In Moreton Club v. The Commonwealth [3] Dixon J. formed the conclusion that if there had been no controls it would have been possible in March 1946, when the Commonwealth compulsorily acquired the balance of the club's lease, for the club to have disposed of the balance at a very high premium, and that such was the demand for accommodation that the hypothetical seller, willing but not anxious to dispose of it, would not have parted with it for anything less than £6,000. Yet the compensation for the land was fixed at £4,000. His Honour observed that because of the controls it was impossible to find a true measure of the value of the premises to the owner of the lease in what a willing buyer of the lease might lawfully pay. It would be presumed that the buyer would not be prepared to infringe reg. 6 and incur a penalty, although the purchase if made would be enforceable, as reg. 10 provides. But the owner of land is not bound to sell during such economic control, but may await the removal of controls, and the hypothetical parties would be assumed to negotiate on that basis. They would take into account the time that controls would be likely to last, i.e. what time would elapse before the owner of the land could find a purchaser who could lawfully pay a price that would represent the true value of the land to the owner. The time of the removal of controls might be conjectural, but would still be a consideration; at all events, if not then too remote (see Spencer's Case, per Griffith C.J. [4] and Reg. v. Brown, per Cockburn C.J. [5] ). Now this land was resumed on 12th December 1946 i.e. after all hostilities had ceased in World War II. It is true that the tribunal assessing the compensation mentally places itself in the position of the bargaining parties as on the critical date, in this case 1st January 1946 (see Spencer's Case, per Isaacs J. [6] ); but any changes in the land itself and in the possibility of using it since the preceding 1st January are taken into account, though the value of the land so regarded is taken at an earlier date (see Grace Bros. Pty. Ltd. v. The Commonwealth, per Latham C.J. [7] ). The fact that hostilities ceased in early August before the resumption would not be excluded from consideration in determining what the negotiating parties might forecast on the critical date as to the time when controls would be lifted. So too evidence of prices paid for comparable lands, not only before but after the critical date is admissible, the weight of the evidence varying with the distance in time of the comparable sale from the critical date. Prices on future sales, not too remote in time, might well be within the range of forecast at the critical date, not being prices obtained during a period of unexpected prosperity or depression.