no other legislative power could be invoked for the purpose. Another ground for the claim was that S. 92 was infringed upon by provisions contained in Part IV. of the Act and that they were inseparable from the rest of the statute, which accordingly failed as a whole.
The Court decided against the first ground, placing upon S. 51 (i.) an interpretation ample enough, apart from the effect of S. 92, to warrant the whole enactment, except those parts relating to airline [No. 2].
services with Territories of the Commonwealth. On the other hand, the Court upheld the contention that Part IV. contains provisions obnoxious to S. 92 and declared them invalid accordingly, and for a like reason it declared the impugned Air Navigation regulation to be invalid. But the Court held the invalid provisions were not inseverable, and that the entire Act was not vitiated. Two other cases were argued with that of the Australian National Airways Pty. Ltd., suits the plaintiffs in which conducted air services with Territories. They argued unsuccessfully that the provisions of the Act relating to airline services with Territories were not justified by S. 122 of the Constitution. If the argument had been accepted, it would have been necessary to say whether those provisions were inseverable or the whole Act fell with them.
The plaintiff Australian National Airways Pty. Ltd., not being content with the declarations it obtained declaring three specific provisions bad as contrary to S. 92, desires to appeal to the Privy Council, but recognizes that, in SO far as the case depends upon the interpretation of S. 51 (i.), the decision may be considered to be one upon a question as to the limits inter se of the constitutional powers of the Commonwealth and the States. The plaintiff is prepared to contend that this is not so, but rather than depend upon the contention, would prefer, not unnaturally, to be armed with a certificate under S. 74.
The settled interpretation of the crucial words of S. 74, which are of course transcribed in SS. 38A and 40A of the Judiciary Act, is that they cover any decision upon the extent of a paramount power of the Commonwealth, paramount over the concurrent powers of the States. The reason is that the advance, by interpre- tation, of a paramount power of the Commonwealth, would mean that the area of State legislative power which is absolute would recede, absolute in the sense that its exercise is not liable to be defeated or rendered inoperative by an inconsistent exercise of Com- monwealth legislative power. Correspondingly, any reduction of a paramount power of the Commonwealth would mean an increase of the area of State power, the exercise of which is free from possible