Commonwealth Act - AN ACT TO DESIGNATE DISTRICT ENGINEERS OF PROVINCES WHOSE CAPITALS HAVE BEEN CONVERTED INTO CITIES, CITY ENGINEERS EX OFFICIO WITH ADDITIONAL COMPENSATION, PLACING ALL CITY ENGINEERS, INCLUDING THAT OF THE CITY OF MANILA,. UNDER THE SUPERVISION AND CONTROL OF THE DIRECTOR OF PUBLIC WORKS, FIXING THE SALARY OF THE CITY ENGINEER OF MANILA, AND PROVIDING FOR THE APPOINTMENT OF ASSISTANT ENGINEERS, SUPERINTENDENTS, AND OTHER EMPLOYEES OF CHARTERED CITIES.