The Commissioners for the Reduction of the National Debt, if they think fit, with the approval of the Commissioners of Her Majesty's Treasury, may from time to time out of any money in their hands under the Act of the session of the twenty-sixth and twenty-seventh years of Her Majesty (chapter eighty-seven), "to consolidate and amend the laws relating to savings banks," or under the Act of the session of the twenty-fourth and twenty-fifth years of Her Majesty (chapter fourteen), " to grant additional facilities " for depositing small savings at interest with the security of the " Government for due repayment thereof," or under both those Acts, advance to the Commissioners, with such guarantee as is by this Act authorized (but not otherwise), the whole or any part or parts of the money which by this Act the Commissioners are authorized to raise.