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In Histories of Dirt Stephanie Newell traces the ways in which urban spaces and urban dwellers come to be regarded as dirty, as exemplified in colonial and postcolonial Lagos. Newell conceives dirt as an interpretive category that facilitates moral, sanitary, economic, and aesthetic evaluations of other cultures under the rubric of uncleanliness. She examines a number of texts ranging from newspaper articles by elite Lagosians to colonial travel writing, public health films, and urban planning to show how understandings of dirt came to structure colonial governance. Seeing Lagosians as sources of contagion and dirt, British colonizers used racist ideologies and discourses of dirt to justify racial segregation and public health policies. Newell also explores possibilities for non-Eurocentric methods for identifying African urbanites’ own values and opinions by foregrounding the voices of contemporary Lagosians through interviews and focus groups in which their responses to public health issues reflect local aesthetic tastes and values. In excavating the shifting role of dirt in structuring social and political life in Lagos, Newell provides new understandings of colonial and postcolonial urban history in West Africa.

We regularly touch and handle media devices. At the same time, media devices such as body scanners, car seat pressure sensors, and smart phones scan and touch us. In Horn, Henning Schmidgen reflects on the bidirectional nature of touch and the ways in which surfaces constitute sites of mediation between interior and exterior. Schmidgen uses the concept of "horn"—whether manifested as a rhinoceros horn or a musical instrument—to stand for both natural substances and artificial objects as spaces of tactility. He enters into creative dialogue with artists, scientists, and philosophers, ranging from Salvador Dalí, William Kentridge, and Rebecca Horn to Sigmund Freud, Walter Benjamin, and Marshall McLuhan, who plumb the complex interplay between tactility and technological and biological surfaces. Whether analyzing how Dalí conceived of images as tactile entities during his “rhinoceros phase” or examining the problem of tactility in Thomas Pynchon’s The Crying of Lot 49, Schmidgen reconfigures understandings of the dynamic phenomena of touch in media.