Note: For charter provisions as to authority of city as to rates for services rendered under franchises, etc., see Charter, Art. III, § 2, subsection 17. As to public service department generally, see Charter, Art. XXII, § 1. As to authority of council to provide for subordinate officers, employees, etc., see Charter, Art. XXII, § 2. As to powers and duties of public service department generally, see Charter, Art. X, § 6. As to public service sinking fund, see Charter, Art. XI, § 21. As to public service surplus fund, see Charter, Art. XI, § 22.