Methods of oxidation that have been used to prepare perchlorates and periodates, as well as some new methods, were used in attempts to prepare perbromates;These methods included the use of some of the best oxidizing agents known: fluorine chlorine ozone peroxydixulfates, peroxides, superoxides, and anodic oxidation. In some experiments, silver and cobalt catalysts were used;Heating potassium chlorate with sodium bromate gave high yields of perchlorates, so bromates were heated with a number of compounds which decompose and furnish atomic oxygen;Methods of analysis which apply to the other perhalates were used in attempting to detect perbromates;Microscopic examination was made, in many instances, using organic spot test reagents in an attempt to detect the presence of the perbromate ion;No evidence of the formation of perbromates was obtained in any of the experiments conducted.