Dana Arnold is Professor of Architectural History at the University of Southampton and Director of the Centre for Studies in Architecture and Urbanism. She is series editor of New Interventions in Art History, Blackwell Companions to Art History, and Blackwell Anthologies in Art History. Her recent publications include The Metropolis and its Image (Blackwell, 1999), Re-presenting the Metropolis (2000), Reading Architectural History (2002), and Very Short Introduction to Art History (2003). Margaret Iversen is Professor of Art History and Theory at the University of Essex. She is author of Alois Reigl: Art History and Theory (1993) and Mary Kelly (with Homi Bhabha and Douglass Crimp, 1997). She has published several essays on psychoanalytic art theory, many of which will be collected in the forthcoming volume, Art Beyond the Pleasure Principle.