Fred W. Riggs is one of the very few scholars who contributed immensely to the emergence of comparative public administration and in depth understanding of public administration in these post-colonial countries. He was born in china 1917. He was the first chairman of the comparative public Administration group and got PhD award in 1948 from Colombia University. The best book written by him is ’’ Administration in Developing Countries: The theory of Prismatic society (1961)’’. He was well known for his studies specially ‘Fused-Prismatic –Diffracted model’. The main thrust of his model is that western Models are relatively less relevant to the developing countries, which have unique environment contexts-social structures, economic life, cultural practices, political symbols, allocation of power, division of labour , etc, Riggs analyzed interaction between the administration system and its environment in prismatic societies. His Prismatic Sala model represents a tradition or developing society and ‘Sala’ is the administrative sub-system of it.