In Fall 1939, as war engulfed Europe, the author of one of the most influential texts on genetics and evolution, Theodosius Dobzhansky, wrote a letter to curator of insects at the United States National Museum, Edward Albert Chapin. Dobzhansky wished to know what Chapin thought about his pursuing some taxonomic work on an old fascination of his: lady-bird beetles. This paper examines the resulting correspondence as a window into Dobzhansky’s attitude toward taxonomy, the different pressures on geneticists and taxonomists when (...) wrestling with how to name species, the relation between biological theory and taxonomic practice, and how claims regarding human races may have motivated Dobzhansky’s continued interest in the work of beetle taxonomists. In doing so, this article builds on the work of Paul Farber and others to highlight the importance of including museums, taxonomy, and the naturalist tradition within the history of twentieth-century biology. (shrink)

This essay explores the intersection of race science and plant taxonomy in the creation of evolutionary taxonomies (phylogenies) of populations of Zea mays, also known as maize or corn. Following recent work in the history and sociology of race, it analyzes maize taxonomy as technology. Through an analysis of successive attempts to classify diverse maize varieties, especially those originating in Mexico, it shows that taxonomy created possibilities for researchers to intervene in commercial agriculture, state development projects, biological conservation, and domestic (...) and international politics and policy. It further underscores that the modern science of maize taxonomy was distinct but never inseparable from assessments of maize’s human cultivators. Attending to particularities of this relationship is crucial, because it reveals the application of maize taxonomy as a technology for ordering human diversity and intervening in human lives, as well as managing the impressive diversity of Zea mays. (shrink)

When radiocarbon dating techniques were applied to archaeological material in the 1950s they were hailed as a revolution. At last archaeologists could construct absolute chronologies anchored in temporal data backed by immutable laws of physics. This would make it possible to mobilize archaeological data across regions and time-periods on a global scale, rendering obsolete the local and relative chronologies on which archaeologists had long relied. As profound as the impact of 14C dating has been, it has had a long and (...) tortuous history now described as proceeding through three revolutions, each of which addresses distinct challenges of capturing, processing and packaging radiogenic data for use in resolving chronological puzzles with which archaeologists has long wrestled. In practice, mobilizing radiogenic data for archaeological use is a hard-won achievement; it involves multiple transformations that, at each step of the way, depend upon a diverse array of technical expertise and background knowledge. I focus on strategies of triangulation and traceability that establish the integrity of these data and their relevance as anchors for evidential reasoning in archaeology. (shrink)