14.—(1) The Taxing Master may, in the discharge of his functions with respect to the taxation of costs—
(a)take an account of any dealings in money made in connection with the payment of the costs being taxed, if the Court so directs;
(b)require any party represented jointly with any other party in any proceedings before him to be separately represented;
(c)examine any witness in those proceedings;
(d)direct the production of any document which may be relevant in connection with those proceedings;
(e)request any master to transmit to him any books, papers or documents relating to the cause or matter and to certify any proceedings before such master the costs of which may be comprised in the bill of costs under taxation.
(2) Where the taxation of costs relates to a solicitor's bill of costs to his own client in respect of any contentious business, the Taxing Master shall ascertain the credits, if any, to which the client is entitled and for this purpose the solicitor shall, at the time of lodging his bill of costs for taxation, annex thereto or indorse thereon a certificate in the form prescribed by the Taxing Master, signed by him, showing what money has been received by him or his firm from any person and the manner in which such money has been dealt with.