6. "The Commonwealth" shall mean the Commonwealth of Australia as established under this Act.
"The States" shall mean such of the colonies of New South Wales, New Zealand, Queensland, Tasmania, Victoria, Western Australia, and South Australia, including the northern territory of South Australia, as for the time being are parts of the Commonwealth, and such colonies or territories as may be admitted into or established by the Commonwealth as States; and each of such parts of the Commonwealth shall be called "a State".
"Original States" shall mean such States as are parts of the Commonwealth at its establishment.