All moneys provided for the funds of the Police Pension and Retirement System, by appropriation by the city, or contribution by police officers, shall be paid over to and received by the City Treasurer for the use and benefit of the Police Pension and Retirement System, to be disbursed as provided by law and this article, and the additional duties this imposed on the City Treasurer shall be and comprise additional duties for which he or she shall be liable under his or her oath as City Treasurer.
(`90 Code, § 1-41)