Comparison of four ballistic and thrusting target materials: An experimental and Bayesian approach using static testing of stone and steel arrow tips

Researchers use a variety of target materials, and sometimes combinations of materials, in their archaeological experiments to examine thrust-spear or projectile penetration, impact angle, durability, and other issues involving prehistoric hunting weaponry. This variety of target materials is beneficial to archaeological science in several ways, but it may also hinder the comparison of results because many of these target materials do not necessarily share similar physical properties. Here, we assess the penetration properties of four different target materials—store-bought meat, clay, and two types of gelatin—via static penetration tests of a modern broadhead-tipped arrow and a stone-tipped projectile attached to an Instron Universal Materials Tester. Our analyses of load-deflection curves, peak load, and work energy demonstrate how the four target materials are similar in some ways but different in others, which suggests that researchers may strategically employ one or several depending on the question asked or hypothesis tested.     

Model migrants?: Sikh activism and race relations organisations in Britain

Race relations organisations in Britain hailed Sikhs as models of peaceful integration during volatile political debates about the immigration of Commonwealth peoples during the 1960s and early 1970s. But Sikh campaigns to protect the sanctity of turban-wearing challenged this symbiotic relationship. This article explores how motorcycle helmet laws provoked a campaign to protect the Sikh turban and allowed diasporic Sikhs to articulate their concerns about British integration and race relations expertise during the mid-1970s. Sikh campaigners linked restrictions on turban-wearing to concerns about race relations legislation, equal employment policy, and their rights as British residents. In assessing the fluctuating relationship between Sikh activists and race relations authorities, it reveals the fractures in pluralist integrationist ideologies that continued to prioritise British cultural authority. The evidence here also demonstrates that this moment provided British Sikh communities with an unprecedented opportunity for national solidarity and diasporic community-building.     

The Role of Functional Efficiency in the Decline of North America’s Copper Culture (8000–3000 BP): an Experimental,Ecological, and Evolutionary Approach

The copper-using cultures of North America’s Archaic Period (10,000–3000 BP) have long been an archaeological enigma. For millennia, Middle and Late Archaic hunter-gatherers (8000–3000 BP) around the Upper Great Lakes region made utilitarian implements out of copper, only for these items to decline in prominence and frequency as populations grew and social complexity increased during the Archaic to Woodland Transition. From a cultural evolutionary perspective, the trajectory of North America’s copper usage presents a conundrum, as it is generally assumed that “superior” tools, i.e., metals, will replace inferior ones, i.e., stone. For well over a century, scholars have pondered the reason for the demise of copper technology that was once a wide-spread phenomenon. To address this question, an extensive archaeological experimental program was conducted which compared replica copper tools (spear points, knife blades, and awls) to analogous ones made of stone or bone to assess whether relative functional efficiency contributed to the decline of utilitarian copper implements. Here, the results of this three-part research program are presented in concert with population dynamics and ecological change to paint a broader picture of the complex interrelationships between the social, ecological, and technological spheres of past human behaviors. The synthesis of these approaches reveals that functional explanations—derived from experimental archaeology placed in an evolutionary framework—can shed much light on the trajectory of metal use in the North American Great Lakes.

     

Description and Thermoluminescence (Tl) Dating of An Alleged Hopewell Mobiliary Clay Human Figurine from Hopeton Earthworks,Ross County,Ohio

During a reorganization of the collections at Kent State University (KSU), a fired-clay human figurine was discovered. Beyond the fact that KSU obtained the specimen from a collector, and the alleged origin was the Ohio Hopewell site of Hopeton Earthworks, information on the specimen’s provenience and chain of custody was lacking or ambiguous. To determine whether the artifact was consistent in style and age with Hopewell, we conducted a comparative study, as well as a direct chronometric assessment using thermoluminescence (TL) dating. The comparative study was equivocal: The figurine possessed some attributes consistent with Hopewell, but other features were not consistent or missing. TL dating revealed an age of 4590?±?270, exceeding the Hopewell period by over 2,000 years. These results suggest two mutually exclusive hypotheses, neither of which is relevant to Hopewell: Either the figurine is one of the earliest examples of ceramic technology in eastern North America or it is a “fake,” perhaps from the Old World, and the object entered the KSU collections under pretense. More broadly, we suggest that archaeologists take a much more circumspect approach to collector-acquired objects and perform their due diligence in verifying the stories associated with them, even if that means increased use of destructive testing procedures.     

The Architects of Integration: Research,Public Policy,and the Institute of Race Relations in Post-imperial Britain

ABSTRACT

This article traces the evolution of the field of race relations by exploring the thinking of Philip Mason, a former agent of the Indian Civil Service who built a second career as the elder statesman of this emerging discipline in Britain. Mason led the well-funded Institute of Race Relations, an independent organisation that brought together academics, public policy analysts, and journalists to address concerns about the integration of black and Asian migrants in Britain from the 1950s. Mason brought his imperial expertise to bear on the new discipline, and imagined the new subject in light of a wide range of shifting international concerns: imperial race relations, the decline of the British Empire, the Cold War, and the persistence of racially-divided states like South Africa and the United States. To address these anxieties, race relations experts suggested that race relations studies should be comparative across several different imperial and post-colonial locales, building towards a master project that would provide suggestions on mollifying racial tensions across the globe. Using the United States as a key referent, Mason and others ushered in a transitional era, moving the discipline from a paternalistic and superior approach to formerly colonised subjects to articulations of liberal inclusion and cultural integration. Tracing the life of the Institute, and Mason's influence on policy and subsequent anti-racist organisations, reveals how the early assumptions of the field positioned Britain's integration problem as temporary, indeterminate, and aided by the imperial, post-imperial, and transatlantic similarities they examined.