My submission is that it is doubtful in That manner and in what matters the Privy Council has been exercising jurisdiction. If there were no pre-existing law, but the Privy Council was exercising jurisdiction only as a matter of practice, those jurisdictions must be taken away from the Privy Council and conferred on the Federal Court. Much of the Constitution of England is by way of conventions, so that we have to see that the jurisdiction of our Federal Court may be foolproof and is no less expensive than that of the Privy Council.