UC Berkeley

Historians of science have long recognized that agricultural institutions helped shape the first generation of geneticists, but the importance of academic biology to scientific agriculture has remained largely unexplored. This dissertation charts the relationship between evolutionary thought and industrial agriculture from Charles Darwin's research program of the nineteenth century through the development of professional genetics in the first quarter of the twentieth century. It does this by focusing on a single topic that was important simultaneously to evolutionary thinkers as a conceptual challenge and to agriculturalists as a technique for modifying organism populations: the intensive inbreeding of livestock and crops.

Chapter One traces zoological inbreeding and botanical self-fertilization in Darwin's research from his articles published in The gardeners' chronicle in the 1840s and 1850s through his The effects of cross and self fertilisation in the vegetable kingdom of 1876. In doing so, it demonstrates how Darwin metaphorically linked natural selection to methodical selection in order to authorize the naturalist to become an experimental evolutionist. It also explores the potential of Darwin's program as an ideology for actors intent on transforming the political economy of agriculture.

Chapter Two moves away from scholarly discussions of evolution to consider how intensive inbreeding was pioneered as a method for modifying crops by the Bureau of Plant Industry of the U.S. Department of Agriculture between 1897 and 1907, the decade following William Jennings Bryan's loss to William McKinley in the election of 1896. By analyzing both Robert Bakewell's livestock inbreeding system of the eighteenth century and Archibald Shamel's Connecticut River tobacco self-fertilization program of the early twentieth, the chapter explains the political economy of intensive inbreeding. It concludes by exploring the broader context of the experiments devoted to livestock inbreeding that George Rommel initiated at the Bureau of Animal Industry of the U.S. Department of Agriculture in the early 1900s.

Chapter Three combines the intellectual history of Chapter One with the political and economic history of Chapter Two by illustrating how the research program of experimental evolution that Darwin formulated in the nineteenth century mapped onto the large-scale industrial agriculture projects of the USDA between 1903 and 1925. The chapter follows ideas on inbreeding as they moved across various academic and professional communities, paying particular attention to institutional arrangements like the American Breeders' Association and the Bussey Institution of Harvard University that facilitated these transfers. It also examines various inbred organism populations that became prototypes for industrial production and the scientists who became their shepherds: the Wistar rats of Helen Dean King, the hybrid corn of Edward Murray East and Donald Forsha Jones, and the guinea pigs of Sewall Wright.