The fossilized primate skull known as the Taungs Baby, discovered in South Africa, was put forward in 1925 as a controversial ‘missing link’ between humans and apes. This essay examines the controversy generated by the fossil, with a focus on practice and the circulation of material objects. Viewing the Taungs story from this perspective provides a new outlook on debates, one that suggests that attention to the importance of place, particularly the ways that specific localities shape scientific practices, is crucial (...) to understanding such controversies. During the 1920s, the fossil itself did not move or circulate from its South African location, a fact that raised methodological concerns in understanding its significance and drew immense criticism from a range of experts. Examining the criticisms regarding the fossil’s failure to circulate draws attention to the importance of centers of accumulation in the analysis of hominid fossils. Diverging from existing histories that primarily emphasize the role of theory in paleoanthropological debates, then, this article argues that scientific practice played an important role in the Taungs fossil controversy. Examining this dimension of the debates has broader implications for revealing the underlying imperial assumptions that guided hominid paleontology during the early twentieth century. (shrink)

Comparison between different animal species is omnipresent in the history of science and medicine but rarely subject to focussed historical analysis. The articles in the “Working Across Species” topical collection address this deficit by looking directly at the practical and epistemic work of cross-species comparison. Drawn from papers presented at a Wellcome-Trust-funded workshop in 2016, these papers investigate various ways that comparison has been made persuasive and successful, in multiple locations, by diverse disciplines, over the course of two centuries. They (...) explore the many different animal features that have been considered to be comparable, and the ways that animals have shaped science and medicine through the use of comparison. Authors demonstrate that comparison between species often transcended the range of practices typically employed with experimental animal models, where standardised practises and apparatus were applied to standardised bodies to produce generalizable, objective data; instead, comparison across species has often engaged diverse groups of non-standard species, made use of subjective inferences about phenomena that cannot be directly observed, and inspired analogies that linked physiological and behavioural characteristics with the apparent affective state of non-human animals. Moreover, such comparative practices have also provided unusually fruitful opportunities for collaborative connections between different research traditions and disciplines. (shrink)

Beginning in the mid-1930s the comparative physiologists Laurence Irving and Per Fredrik Scholander pioneered the study of diving mammals, particularly harbor seals. Although resting on earlier work dating back to the late nineteenth century, their research was distinctive in several ways. In contrast to medically oriented physiology, the approaches of Irving and Scholander were strongly influenced by natural history, zoology, ecology, and evolutionary biology. Diving mammals, they argued, shared the cardiopulmonary physiology of terrestrial mammals, but evolution had modified these basic (...) adaptive processes in extreme ways. In particular, seals’ remarkable ability to hold breath, lower metabolism, produce energy anaerobically, and resist asphyxiation, provided a sharp contrast with terrestrial mammals, including humans. This diving physiology was an extreme elaboration of a general regulatory mechanism that allowed seals and other diving mammals to remain active underwater for extended periods. The decrease in heart rate referred to as bradycardia or the “diving reflex” was highly developed in diving mammals, but also found in less developed form in many other organisms faced by asphyxia. It therefore served as a kind of “master switch” for lowering metabolism in diving, hibernation, parturition, drowning, and other physiological responses involving lack of oxygen. Studying bradycardia unified a wide diversity of physiological phenomena, while also providing a context for contrasting the physiological responses of various species, including humans. Conducted in the laboratory and the field, this research served as a bridge between a comparative physiological ecology focused on non-human species and a human-centered general physiology. (shrink)