This volume contains a selection of the more important and influential of Professor F. W. Walbank's occasional papers. Published over a period of fifty years, they cover a wide range of classical subjects. Three deal with the role of nationality in the Greco-Roman world and with the constitutional character of Greek federal states. Others are concerned with problems of third- and second-century Roman history. Eight papers treat the antecedents of so-called 'tragic history', speeches in ancient historians, and several aspects of Polybius' work. Finally, the selection includes Professor Walbank's detailed discussion of the chronology of Ptolemy IV's death and the accession of Ptolemy Epiphanes. A full bibliography of the author's publications concludes the volume.