Section 251. Saving clause

Nothing  contained  in this chapter shall be
  construed to repeal any statute of the state or ordinance of the city or
  rule or regulation of the board of health,  not  inconsistent  with  the
  provisions  of this chapter, and the same shall remain in full force and
  effect, when not inconsistent with the provisions of this chapter, to be
  construed and operated in harmony with its provisions. The powers  which
  are  conferred  and  the  duties  which  are imposed upon any officer or
  department of the city under any statute  of  the  state,  or  any  city
  ordinance  which  is  in  force at the time of the taking effect of this
  chapter shall, if  such  office  or  department  be  abolished  by  this
  chapter, be thereafter exercised and discharged by the officer, board or
  department  upon whom is imposed corresponding or like functions, powers
  and duties under the provisions of this chapter. Where any contract  has
  been  entered into by the city prior to the time of the taking effect of
  this chapter, or any bond or undertaking has been given to or  in  favor
  of  the city, which contains provisions that the same may be enforced by
  some officer, board or department therein named, but by  the  provisions
  of  this  chapter  such  office,  board or department is abolished, such
  contracts, bonds and undertakings shall not in any manner  be  impaired,
  but  shall  continue  in  full  force,  and the powers conferred and the
  duties imposed with reference to the same upon  the  officer,  board  or
  department  which  has been abolished, shall thereafter be exercised and
  discharged by the officer, board or department upon whom is conferred or
  imposed like powers, functions or duties under the  provisions  of  this
  chapter.  The  park  commission,  in  any  city,  which at the time this
  chapter takes effect, has jurisdiction of its park system, is  continued
  in  office  notwithstanding the provisions of this chapter, with all the
  powers and subject to all the duties, conferred and  imposed  upon  such
  commission by law.