Section 3. the Suburban Metropolitan Planning Commission Shall Be

appointed by the Governor of the State of Pennsylvania, and shall consist of fifteen members, who may or may not hold other public office, whether for profit or otherwise, of whom twelve shall be residents of the district involved, and three shall be residents of the said city of the first class, five members to be appointed to serve for one year, five for two years, five for three years; then, thereafter, each appointment to be for three years.

An appointment to fill a casual vacancy shall be for the unexpired portion of the term. Nine shall constitute a quorum.

The Suburban Metropolitan Planning Commission shall make and alter rules and regulations for its own organization and procedure, consistent with the laws of the Commonwealth. From its own members it shall choose a chairman and vice-chairman. Each member shall serve without compensation. On or before January tenth of each and every year, the Commission shall make to the mayor of each city, to councils of each borough, to the commissioners of each first class township, and to the supervisors of each second class township, within the Suburban Metropolitan District, to the mayor of the said city of the first class, and to the Governor of the State of Pennsylvania, a report of its transactions and recommendations. The Commission may employ a secretary, engineers, and other experts and persons, whose salaries and wages, as well as all the other necessary expenses of the Commission and members thereof, shall be provided for as hereinafter set forth.