MELBOURNE CIVIC IMPROVEMENT BOARD, an agency of the former City of Melbourne, John B. Yeisley, Orren H. Cross, James Adsit, M. H. Arbogast, Harding C. Bailey, individually and as duly appointed members of the Melbourne Civic Improvement Board, Appellants, v. CITY OF MELBOURNE, a municipal corporation, Appellee, 242 So. 2d 513