Demonstrating intellectual migration, the first colloquium was held in Cambridge in the spring of 2004, and the second in Bologna in the fall. The 13 papers consider how the migration of scientists and scholars, especially in response to political upheavals and major wars, impacts the movement of ideas. Among their topics are German nationals in revolutionary France 1791-1800, the diffusion of economic ideas and the formation of the market tradition during the 19th century, and Paul Feyerabend and the forgotten Third Vienna Circle. Science History Publications USA is a division of Watson Publishing International. Annotation ©2009 Book News, Inc., Portland, OR (booknews.com)