AN ORDINANCE AMENDING THE PROVISO OF SECTION 1 OF ORDINANCE NO. 6514, RELATIVE TO THE PRESCRIPTION OF A MAYOR'S PERMIT AND A MUNICIPAL LICENSE FOR THE OPERATION OF CARGO OR DELIVERT TRUCKS AND SERVICE VEHICLES, BY INSERTING THE WORD "NOT" BETWEEN THE WORDS "SHALL" AND "APPLY" IN THE SAID PROVISO AND BY ADDING THE PHRASE "AS CERTIFIED BY THE OFFICE OF THE MAYOR" AT THE END THEREOF.