The learned District Court Judge took the view that s. 39 of the Judiciary Act applied to give federal jurisdiction only to the State courts existing at the date when the section came into operation and to give them federal jurisdiction only within the limits then existing of the State jurisdiction of such courts; any variation of such limits made by any subsequent State law must be disregarded in ascertaining the extent of the federal jurisdiction invested by s. 39 (2). It will be seen that the question of interpretation really is whether s. 39 is ambulatory in its meaning and application. Although there is no actual decision so interpreting it, in this Court s. 39 has always been regarded as ambulatory and consequently as operating upon State courts whether constituted before or after the commencement of the Judiciary Act 1903 and upon State jurisdiction according to the definition thereof under State law in force from time to time. The view that has been tacitly accepted is that the expression "within the limits of their several jurisdictions" refers to the limits imposed by the relevant State law in operation from time to time whether enacted before or after the commencement of the Judiciary Act 1903. There is nothing in the language of s. 39 to prevent the provision receiving an ambulatory effect and the known purpose of the provision could hardly be achieved unless it received such an effect or was repeatedly re-enacted at frequent intervals. Although there is no direct decision of the Court giving s. 39 this operation, on two occasions it has been so interpreted by individual judges of the Court. In his dissenting judgment in Le Mesurier v. Connor [1] , Isaacs J. stated most emphatically that this was the received meaning of the provision. His Honour's observations occur in the course of a passage invoking s. 39 in order to illustrate the particular view he was advancing. The fact that the majority of the Court were not in accord with the conclusion his Honour reached does not detract from the weight to be given to his Honour's statement, made in giving the illustration, of the common understanding of s. 39. The material part of what Isaacs J. said is this: - "And as the provision in sec. 39 is a standing provision constantly speaking in the present (see Halsbury's Laws of England, vol. 27, p. 208, andCraies on Statute Law, 4th ed. (1936), at p. 29), the identification of a given State Court depends on the circumstances as they exist at the moment when jurisdiction is exercised. Prior to that event, and perhaps since the passing of the Act, new Courts may have come into existence, old Courts have been abolished or remodelled, jurisdiction extended or restricted, and it would be impossible to say that in 1903, when that Act was passed, the State Courts pointed to by sec. 39 were all in effect enumerated and inalterable. Never in the whole history of this Court has it even been suggested that a State Court exercising Federal jurisdiction under sec. 39 must be one of the Courts identifiable on 25th August 1903 or with its jurisdiction in all respects as then identifiable" [1] .