Provided, That if any Commissioner, or any Officer who is removed from Office as aforesaid, is at the Commencement of this Act entitled to receive, in addition to the Salary of his Office, any Superannuation Allowance in respect of any former Employment in the Civil Service of the Crown, he shall be entitled to continue to receive, in addition to such Annuity as aforesaid, the Amount of Superannuation Allowance which he is at the Commencement of this Act so entitled to receive, and no more.