Judiciary Act 1903
SECT 15 – Exercise of jurisdiction
The jurisdiction of the High Court may, subject to the provisions of this Act, be exercised by any one or more Justices sitting in open Court.
SECT 39B – Original jurisdiction of Federal Court of Australia
SECT 80 – Common law to govern
So far as the laws of the Commonwealth are not applicable or so far as their provisions are insufficient to carry them into effect, or to provide adequate remedies or punishment, the common law in Australia as modified by the Constitution and by the statute law in force in the State or Territory in which the Court in which the jurisdiction is exercised is held shall, so far as it is applicable and not inconsistent with the Constitution and the laws of the Commonwealth, govern all Courts exercising federal jurisdiction in the exercise of their jurisdiction in civil and criminal matters.