Various reasons were assigned in the orders nisi for these contentions, which it is unnecessary to set forth at length. The attack upon the Act itself - the subject of the first ground of the orders to review - was based upon the American constitutional doctrine that "no legislative body can delegate to another department of the Government, or to any other authority, the power, either generally or specially, to enact laws. The reason is found in the very existence of its own powers. This high prerogative has been entrusted to its own wisdom, judgment, and patriotism, and not to those of other persons, and it will act ultra vires if it undertakes to delegate the trust, instead of executing it" (Cooley, Principles of Constitutional Law, 3rd ed., p. 111). Even in America, this principle does not preclude conferring local powers of government upon local authorities, nor the giving to the Territories a general authority to legislate on their own affairs (ibid., p. 111). It was denied that the Transport Workers Act 1928-1929 impinged upon the doctrine, because in that Act the Parliament confined the regulating power to certain specific matters within the ambit of the trade and commerce power, and accordingly merely exercised its own legislative power within that ambit, and did not delegate any part of it. Assuming, however, that the Act does impinge upon the doctrine, still such a restriction has never been implied in English law from the division of powers between the several departments of government. As Higgins J. said in Baxter v Ah Way[1], "the Federal Parliament has, within its ambit, full power to frame its laws in any fashion, using any agent, any agency, any machinery that in its wisdom it thinks fit, for the peace, order, and good government" of the Commonwealth. And the decisions of this Court have been uniformly to the same effect (Roche v Kronheimer[2] and cases there cited). It does not follow that, because the Constitution does not permit the judicial power of the Commonwealth to be vested in any tribunal other than the High Court and other Federal Courts, therefore the granting or conferring of regulative powers upon bodies other than Parliament itself is prohibited. Legislative power is very different in character from judicial power: the general authority of the Parliament of the Commonwealth to make laws upon specific subjects at discretion bears no resemblance to the judicial power. Indeed, unless this view is correct, and if there has been a delegation of legislative power, the judgments in the Huddart Parker Case[3] and in Dignan's Case[4] overlooked an obvious point, and the cases were wrongly decided.