The agreement is a joint scheme entered into by the Commonwealth and the State to settle discharged members of the Forces on land in New South Wales. The agreement is not for a fixed term. It is dated 28th November 1945 and will continue until 15th August 1950 at least, and may continue for an indefinite period afterwards. Yet, whenever the State acquires private land by agreement or compulsion for the purposes of the scheme, it must do so at a value not exceeding that ruling on 10th February 1942. It is therefore immaterial what changes in the value of the land may occur between 10th February 1942 and the date of acquisition, even assuming that no improvements are made in the meantime, and if they are made, there is no provision for the owner receiving compensation for any increase in the value of the land on this account. The compensation is therefore obviously inequitable and the agreement provides for the compulsory acquisition of land from private owners on a semi-confiscatory basis. Section 51 (xxxi.) of the Constitution provides that Parliament shall have power to make laws with respect to the acquisition of property on just terms from any State or person for any purpose in respect of which the Parliament has power to make laws. Whenever, therefore, the Commonwealth Parliament legislates with respect to the acquisition of property for a purpose in respect of which the Parliament has power to make laws, the legislation must provide just terms, that is the legislation must provide that the owner shall receive the full equivalent in money for the value of the property of which he is deprived. The agreement attempts to escape this constitutional requirement by providing that the State and not the Commonwealth shall make the acquisition and become the owner of the land. The State legislation relied upon is contained in the Closer Settlement (Amendment) Act 1907, s. 4 as amended by s. 3 of the War Service Land Settlement and Closer Settlement (Amendment) Act 1945 N.S.W. and s. 7 of the War Service Land Settlement and Closer Settlement (Amendment) Act 1948 N.S.W. The method of acquisition provided for by s. 4 is that where an advisory board reports that any land is suitable to be acquired for closer settlement the Governor may, subject to the Act, purchase it by agreement from the owner; or, failing such agreement, resume it under the Act. Before resuming any land, the Governor shall, by proclamation in the Gazette , notify that he proposes to consider the advisableness of acquiring such land for the purposes of closer settlement. Section 3 (b) of the amending Act of 1946 inserted at the end of s. 4 of the Act of 1907 a new sub-s. 4 (1) and (b), of which (b) provides in a proviso that where any resumption is made for the purposes of the scheme contained in the agreement approved and ratified by the War Service Land Settlement Agreement Act 1945, the value of the land as so assessed or determined (that is assessed by an advisory board or determined by the Land and Valuation Court) shall not exceed the value that would have been so assessed or determined in respect of an identical resumption as at 10th February 1942, excepting the value of any improvements effected on such land since that date. This proviso was amended by s. 3 of the amending Act of 1948. The effect of the amendment is that an advisory board can now add fifteen per cent to the value ruling on 10th February 1942, and in the case of compulsory acquisition, if the dispossessed owner agrees not to claim compensation in excess of the value of the land as assessed by an advisory board, the value of the land as so assessed shall not exceed by more than fifteen per cent the value ruling on 10th February 1942 excepting the value of any improvements effected on such land since that date. But in the case of any resumption other than a resumption where the owner agrees not to claim compensation in excess of the value of the land as assessed by an advisory board, the value of the land is still, as under the previous proviso, to be the value ruling on 10th February 1942, excepting the value of any improvements effected on such land since that date. The proviso in its latest form therefore provides an inducement to owners who are prepared to forego their statutory right to appeal to the Land and Valuation Court from an assessment of an advisory board by providing that such owners are to have their compensation assessed at a higher rate than those owners who are not prepared to forego this right. Such an inducement is not provided for in the agreement so that presumably the State is prepared to finance the whole of it. But it is immaterial on these demurrers, for the plaintiff is not prepared to accept the rate ruling on 10th February 1942, even plus fifteen per cent, and has not been induced not to challenge the whole scheme.