This volume, first published in 1982, is a collection of original essays written to honour Professor W. Arthur Lewis, 1979 co-winner of the Nobel Prize in economics. The authors, an international group of distinguished scholars, address a varied set of specific issues reflecting Professor Lewis’ research interests, covering topics which include: technological change in agriculture, analyses of unemployment and income distribution, the role of government policy in the development process, the historical record of development, and the relationship between developed and developing nations.