Middle class mores : Beaufort's bastards -- Breeding true : processing a new elite -- The political economy of natural history -- Homologous networks of exchange : the intersubjective infrastructure of scientific exchange -- Categorizing experience : space and time in nineteenth-century natural history -- The Pacific Railway survey : the subject in the panoramic mode -- Storied pasts -- The plot thickens : the political economic dimensions of biological stories -- Wandering and narrative -- Wandering and inheritance in light of the sensory-motor complex -- Writing, goods, and memory -- Industrial perspectives : Luther Burbank -- Record keeping : a post-hermeneutic means for charting the space of flows.