AN ORDINANCE AMENDING ORDINANCE NO. 6461, RELATIVE TO THE ACCEPTANCE BY THE CITY OF MANILA OF THE OFFER OF THE MANILA SECURITY AND PROTECTIVE AGENCY BY PROVIDING THAT THE SECURITY SERVICE TO BE EXTENDED BY THE SAID AGENCY SHALL BE FOR SCHOOLS, LIBRARIES, HEALTH CENTERS AND OTHER CITY OWNED BUILDINGS, INSTEAD FOR CITY HALL AND CITY COURT BUILDINGS.