Court of Australia against the Commonwealth and the Minister of State for the Interior, the respondents in this appeal. In the writ of summons the appellant claimed a declaration that the notifica- tion was void as not complying with the Lands Acquisition Act; a declaration that the Lands Acquisition Act was ultra vires of the Constitution of the Commonwealth of Australia, S. 51, par. (xxxi.), and an alternative declaration that S. 29 of the said Act was ultra vires of this same section and paragraph. There was a claim, for an injunction against entering on or interfering with the land and premises, or selling, mortgaging, alienating, charging or encum- bering or otherwise dealing with them, and a claim for damages.
The respondents demurred to the statement of claim on inter alia the ground that the Lands Acquisition Act and every part thereof was a valid exercise of the legislative power of the Commonwealth of Australia.
The material provisions of the Lands Acquisition Act are as follows :-
13. The Commonwealth may acquire any land for public purposes-
(a) by agreement with the owner; or (b) by compulsory process. 15.-(1) The Governor-General may direct that any land may be acquired by the Commonwealth from the owner by compulsory process.
(2) The Governor-General may thereupon, by notification published in the Gazette, declare that the land has been acquired under this Act for the public purpose therein expressed.
(3) A copy of the notification shall be laid before both Houses of the Parliament within fourteen days after its publication in the Gazette if the Parliament is then sitting, and if not then within fourteen days after the next meeting of the Parliament.
16.-(1) Upon the publication of the notification in the Gazette, the land described therein shall, by force of this Act-
(a) be vested in the Commonwealth; and (b) be freed and discharged from all trusts, obligations, estates,
interests, contracts, licences, charges, rates, and easements, to the intent that the legal estate therein, together with all rights and powers incident thereto or conferred by this Act, shall be vested in the Commonwealth.
17. Upon the publication of the notification in the Gazette, the estate and interest of every person entitled to the land specified in the notification, and the title of the State to any Crown land