21.(1) The totalisator tax payable under section 15 shall be recoverable as a public demand from the racing club conducting the meeting, and any portion of such tax which is not so recovered shall also be recoverable as a public demand from the stewards of the race-meeting jointly and severally. (2) All monies which a licensed bookmaker is liable to make over to the prescribed officer under section 19 shall be recoverable from the licensed bookmaker as a public demand.