Each ordinance shall be introduced in written or printed form, and shall not contain more than one subject, which shall be clearly stated in the title; but general appropriation ordinances may contain the various subjects and acts for which moneys are to be appropriated.
   Before passage, each ordinance shall be read by title only at two meetings of the commission not less than one week apart. Provided, however, that upon request by two commissioners such ordinance shall be read in its entirety. Emergency ordinances need only be read once before passage and such reading shall be by title only. Provided, however, that such an emergency ordinance, upon request by one commissioner, shall be read in its entirety once before passage. (Amended 11-8-77.)