The Sources of Justin on Macedonia to the Death of Philip

In this article I am making what is, as far as I know, the first systematic analysis of Justin books 7, 8 and 9. The method is that which I employed in analysing the sources of Diodorus 16 in CQ 31 (1937), 79ff. and 32 (1938), 137ff. Previous scholars had looked for similarities between the fragments of ancient historians and details in the text of Diodorus, and they had taken any such similarity as proof of a particular source being followed. They had carried their method to extremes: A. Momigliano, for instance, had concluded that Diodorus changed his source 12 times within 23 chapters, and R. Laqueur 18 times within 4 chapters in book 16. My system was to define separable Groups of narrative on the basis of fullness, accuracy, military and political detail, and attitude to the general theme, and to see how far any one Group could be attributed to an ancient author. I begin, therefore, with separable Groups of narrative.