The election of Solon as Archon in Athens at the beginning of the 6th century BC brought about significant revisions to both the sacrificial calendar and the code of civil laws. Dr Valdés Guía's work represents a detailed analysis of the background and implementation of Solon's major reforms that were to put an end to the stasis of the City, by means of a fresh definition of the internal and external frontiers of the polis, at a crucial moment in Athens' consolidation as a city-state.