Outposts of science; the knowledge trade and the expansion of scientific community in post-Civil War America

By the second half of the nineteenth century, local and regional voluntary societies were among the most widespread, accessible, and familiar public scientific institutions in America. Collectively, they made up an institutional network that converted individuals' private interest in science into a public activity. They played an essential role in the dissemination of scientific information, the growth of a scientifically literate population, and the extension of public support for science in the decades after the Civil War. This essay delineates and maps the spread of these societies throughout the country, as well as the flow of scientific information both among societies and between a society and its regional hinterland. Using the Davenport [Iowa] Academy of Natural Sciences as an example, it demonstrates how local societies were embedded in a national scientific community and mediated between it and local scientific enthusiasts, to the benefit of both.