INTERNATIONAL ASSOCIATION OF FIREFIGHTERS, LOCAL 747, as the representative of its members employed by the City of St. Petersburg, and ex rel. Robert JAMES, Kenneth Graham and Fred Hagan, Appellants, v. Fred BRYSON et al., individually, and as the Civil Service Commission of the City of St. Petersburg, Florida, a municipal corporation, and Lois Moore, individually, and as Chief Examiner of the Civil Service Commission of the City of St. Petersburg, Florida, Appellees, 255 So. 2d 717