Fluid Boundaries : this is the third of a series of three sessions which will challenge and explore the traditional notion of rigid boundaries between different forms of the religious life between circa 400 and 1500. Focussing on the period between c. 1100 and 1300, papers in this session will investigate the permeable and fluid nature of these boundaries in three different ways. The first paper (Micol Long and Johan Belaen : "The normative framework of intra-monastic transfer in the long twelfth century") addresses the normative framework which regulated the transfer of monks between monasteries; the second (Stephane Lecouteux : "Monastic networks (11th-15th centuries): watertight and partitioned structures?") shows how monastic networks fostered the circulation of monks and manuscripts, and the third (Cristina Andenna : "Fluid Perceptions: Contemporary Approaches to New Forms of Religious Life in the Twelfth and Thirteenth Centuries") address contemporary perceptions of new forms of religious life in the twelfth and thirteenth century".