In case the duly elected Mayor is absent from the City or is by any reason incapacitated to serve as Mayor at any regular or special meeting of Council, or if he is in anyway incapacitated to serve in a judicial capacity in trying any violation of the Codified Ordinances or other ordinance of the City, the City Clerk shall serve as Mayor during the absence or incapacity.  (1967 Code Sec. 2-34)