'Global' knowledge was constructed, communicated and contested during the long nineteenth century in numerous ways and places. This book focuses on the life-geographies, material practices and varied contributions to knowledge, be they medical or botanical, cartographic or cultural, of actors whose lives crisscrossed an increasingly connected world. Integrating detailed archival research with broader thematic and conceptual reflection, the individual case studies use local specificity to shed light on global structures and processes, revealing the latter to be lived and experienced phenomena...