New experimental evidence on the relation between percussion flaking and flake variation

Controlled experiments in percussion flaking allowed for objective analysis of relationships between variables of flake production and those variables which are attributes of the final result. The independent variables, those controlled by the flintknapper in the production of stone tools, include force and angle of blow, platform thickness and exterior platform angle. The dependent variables are those attributes of the flakes which are often used in current lithic analyses and include interior platform angle, length, thickness and flake termination. The results clearly show that exterior platform angle is highly significant for understanding many aspects of flake production. These and other relationships between the independent and dependent variables are also discussed.     

Introducing a new experimental design for controlled studies of flake formation: results for exterior platform angle,platform depth,angle of blow,velocity, and force

Potential variables that underlie variation in flake size, and in some instances shape, are investigated in a newly designed experiment. This new design, which utilizes glass cores molded to a specific shape, results in flakes that are identical to archaeological ones. Variation in exterior platform angle, platform depth and angle of blow all directly affect flake size, and in the case of exterior platform angle, flake shape as well (in spite of constant core surface morphology). In treating velocity and force independently, neither is found to affect flake size or shape. These results have implications for understanding different strategies that flintknappers may employ to control the size of their flake products.     

The relative effects of core surface morphology on flake shape and other attributes

It is long been thought that many flake attributes, including both size and shape, are largely due to the morphology of a core’s flaking surface, yet this has never been tested under strictly controlled conditions. Using molded glass cores with surface morphologies that highly resemble prehistoric ones, this experiment demonstrates that while core surface morphology does exhibit some influence on flake size and shape, a high degree of variation in flakes produced with the same core surface morphology shows that the effects of other independent variables, such as exterior platform angle and platform depth, have an even stronger effect. A major implication of these results is that current approaches to reconstruct prehistoric knapping strategies are overlooking significant sources of variation.     

Necrocapitalism in the Gig Economy: The Case of Platform Food Couriers in Australia

Although recent deaths of multiple couriers on the road have raised awareness of the dangers of on-demand food delivery, there remains limited government regulation of the industry in many jurisdictions. In this article, we argue that the labour conditions of platform couriers in Australia constitute a case of necrocapitalism (Banerjee), a contemporary form of accumulation through which organisational structures harness the power of debilitation and death for economic gain. After contextualising food delivery within the Australian gig economy, our analysis underscores how necropower operates through courier labour. We illustrate three dimensions: how this form of labour entails corporeal risks and harms; how these harms are heightened by platform infrastructures; and how strategic regulatory inaction maintains necropolitical orders. The article concludes with a reflection on how this contemporary example of necrocapitalism illuminates intersecting vectors of domination underpinning the logics and practices of platform governance.     

Investigating foetal and perinatal mortality in prehistoric skeletal samples: a case study from a 3000-year-old Pacific Island cemetery site

The Teouma skeletal sample from Vanuatu represents one of the few truly colonising populations in the Pacific Islands. Therefore, investigating the factors that may have affected foetal/infant mortality in this population is potentially important for understanding the success of settlement in this region of the world. We investigate whether stable isotope analyses of carbon and nitrogen in conjunction with skeletal ageing techniques, can aid in identifying whether the subadults from Teouma died before or after birth in an attempt to understand the potential threats to foetal and infant survival. Multiple skeletal ageing methods using diaphyseal lengths were used to age the young subadults (n = 7). Using regression-based skeletal ageing methods, four of the individuals were aged at around full-term gestation (37–42 weeks gestation), while the remaining three individuals died preterm. The isotope analyses did not assist in identifying the individuals that survived post-birth because none of the subadults displayed the 2–3‰ trophic increase in δ¹⁵N values expected for a breastfed infant, probably as a result of their young age. However, all of the foetal/perinatal individuals exhibited higher δ¹⁵N values in their bone collagen compared with the adult females of the sample, with two of the individuals demonstrating unusually high δ¹⁵N values. The δ¹³C values of the foetuses/perinates did not exhibit the same variation. We explore a number of possible explanations for this elevation of perinatal/foetal δ¹⁵N values and tentatively suggest that this is a result of in utero stress as a consequence of chronic maternal ill-health. The osteological and palaeodemographic evidence supports the assertion that females, foetuses and perinates were susceptible to environmental stress within this colonising population, resulting in early death of the perinatal individuals in addition to early terminations of pregnancy or premature birth possibly caused by infectious and/or metabolic diseases.     

Stability in the South Pacific surface marine C reservoir over the last 750 years. Evidence from American Samoa, the southern Cook Islands and the Marquesas

Although minor climatic and sea-level changes have been documented for the South Pacific during the late Holocene, our understanding of the consequent impact of these changes on the marine ¹⁴C reservoir, and therefore the ¹⁴C content of shellfish, is limited. Ultimately, this has implications for documenting the chronology of human movement and adaptation in this region. In this paper we compare marine reservoir (ΔR) data obtained from tightly controlled archaeological proveniences with known-age, pre-AD 1950 shells from the southern Cook Islands, American Samoa, and Marquesas Islands. Results indicate that there has been no significant change in the near-shore marine reservoir in these three locations over the last ca. 750 years. Furthermore, known-age, pre-AD 1950 shell samples provide more precise ΔR values for use in sample calibration than archaeological paired shell/charcoal samples. This is attributed in part to the limitations of assigning provenance and age to material from archaeological sites. On the basis of these results we conclude that the known-age, pre-AD 1950 shell derived ΔR values can be used to calibrate shell ¹⁴C results from deposits of late Holocene age.     

Diffusion and kinetic control of weathering layer development

The formation of porous weathering rinds (layers of chemical alteration) on the exterior of rocks is a consequence of dissolution and precipitation of minerals occurring at the mineral–fluid interface within the pores. The speed at which the developed rind advances is controlled by both kinetic reaction rates and the transport of reaction products away from the pore spaces into the outside fluid. We show, using both reaction‐diffusion theory and numerics, that under diffusion limitations, the weathering rate depends on the size and curvature of the sample. This leads to a relationship between rind thickness, δ, and age, t. As the rind thickens, the result in three dimensions differs substantially from the one‐dimensional result of . We describe the conditions under which the one‐dimensional and diffusion‐limited approximations apply and how they evolve as the rock weathers. Under chemical kinetic limitations, the rind advances at a constant rate, dδ/dt = v. We defend the application of a spherical approximation to irregular non‐spherical rocks and apply our results to field observations reported in the literature to show consistency with established methods. Finally, we argue that the variability in size, as well as in mineralogy, over ensembles of grains contributes to heterogeneous weathering rates. We demonstrate that this heterogeneity can contribute to the aging, or gradual decrease with time, of weathering rates previously observed in laboratory and field measurements.     

The end and renewal of ideology in Central Europe and in Hungary

Society has to be understood as a process of fast changes (revolutions) and slow transformations (reformism). This is what has been happening in Central Europe, where the big changes of 1989–1990 were preceded by several small social, political and ideological transformations. When analysing Central European societies, one should also remember that there is an ‘official’ society and a ‘hidden’ society.In addition, the relation of state and civil society is deformed since in most cases the civil sphere is repressed and undeveloped due to the predominance of the ‘official state’. In such societies, you cannot find real hegemony but only dominance, which is practiced by the state not only in the sphere of economy, society and culture, but also in and through ideology.The essence of modern totalitarian society cannot be understood without addressing the permanent existence of unofficial, ‘civil’ ideologies penetrating the ‘hidden’ society at the same time as the ‘official’ ideology. Apart from the slow transformation of ideologies and the crisis of ‘official’ ideology, the strengthening of ‘hidden’ ideology is also required for revolutionary changes. This is how a historically new situation with new ideologies can come into being, in clear contrast to the renewal of old ideologles, which generates a mixture of the old and the new. A look at what happened in Central Europe, but particularly Hungary, should clarify the point.     

‘Faites le mien desir’: studious persuasion and baronial desire in Jordan Fantosme's Chronicle

This article examines the remarkable ‘changes and transpositions’ of form found in Jordan Fantosme's Chronicle, an important Anglo-Norman estoire recounting the rebellion against Henry II in 1173–74. By reading these literary changes as accommodations of circumstances and persons, they can be used to locate the Chronicle in very specific historical and social contexts. Jordan, clerk of the bishop of Winchester and master of the city's grammar schools, places himself, both socially and discursively, within a community of administrative barons, who are very carefully remembered in the Chronicle as a coherent social affinity, or foedus amicitiae, both alienated from and seeking solidarity with the king. These conditions explain the Chronicle's central rhetorical impulses: to chastise the king, sometimes bitterly, and to persuade him to ‘love, cherish … and reward’ these specific barons. To achieve these rhetorical desires, Jordan draws upon the resources of contemporary literary education to imagine and perform persuasion. The Chronicle is thus a powerful illustration of John Baldwin's account of the ‘interpenetration’ of studium et regnum, institutional learning and political administration, in twelfth-century England. Because the Chronicle has in the past been understood as a panegyric, or even propaganda, for a royalist cause, this baronial reading represents a major re-assessment of its sociabilities and purposes.     

Correcting Europe's political economy: The virtuous eclecticism of Georg Ludwig Schmid

The article provides an analysis of Georg Ludwig Schmid's ‘Reflexions sur l’Agriculture’, which was published as the first essay in the first issue of the publications of the Oeconomical Society of Berne, founded in 1759. Schmid connected the agricultural improvement movement of the time to the logic of international power competition that caused the 7 Years’ War and wished to preserve political economy as agronomy for the cause of peace and virtuous economic progress. In his essay on commerce and luxury, he devised a patriotic political economy based on the notion of a marche naturelle, or a natural progress of opulence, which enabled statesmen and political economists to separate the productive from the pathological features of economic development, healthy and necessary growth from luxury. Adam Smith deployed a similar model in the Wealth of Nations but argued that Europe's retrograde development was so fundamental and comprehensive that it made it impossible to use this kind of natural progress model on its own as a meaningful guide for comprehensive economic and political reform.     

‘Elementary aesthetics’, hedonist ethics: The philosophical foundations of Feuerbach's late works

In contrast to the conventional view of Ludwig Feuerbach as a left-wing Young Hegelian, this article argues that his primary contribution to philosophy is to be found in his later ethics, the basis of which may be discerned in his earlier writings. Over and above recent work on Feuerbach's aesthetics, his relation to Herder, and the relationship between aesthetics and ‘theological politics’ in his thought, Feuerbach's philosophy can re-evaluated, in relation to Epicurus and the French libertin tradition, as articulating an ethics of hedonism. In The Essence of Christianity (1841), the Nachlass fragment ‘Elementary Aesthetics’ (1843), and his Principles of the Philosophy of the Future (1843) Feuerbach moves towards the vitalist materialist position that culminates in his (proto-Nietzschean) insight in ‘Against the Dualism of Body and Soul, Flesh and Spirit’ (1846) into the world as an ‘aesthetic phenomenon’, thus laying the foundations for his recognition of the centrality of sensuous pleasure to the ethical life.     

Warrior geopolitics: Gladiator, Black Hawk Down and The Kingdom Of Heaven

The “war on terror” and remilitarization of political anxiety in the aftermath of September 11th in the West, is both facilitated and challenged by representations of geopolitical danger and the supposed necessity for warriors to fight wars in distant lands. Ridley Scott's three movies, Gladiator, Black Hawk Down and most recently The Kingdom of Heaven explore the morality and identity of warriors. They do so in exotic landscapes and settings that emphasize the confrontation with danger as external and frequently unknowable; political violence is presented as something that has both simple and very complicated geographies. The public discussion of the necessity for warfare and “intervention” in Western states is enmeshed in discourses of moralities, rights and “just war”. The professional Western warrior, whether a special forces operative or garrison soldier in peacekeeping mode, is a key figure of the post September 11th era, physically securing the West, and simultaneously securing its identity as the repository of virtue against barbaric threats to civilization. These themes are key to Ridley Scott's work. Analyzing them in terms of the warrior, empire and the particular geographies of combat adds a specifically military dimension to the critical geopolitical literature on war and representation.     

Radiocarbon dating of marine shell samples. The marine radiocarbon reservoir effect of coastal waters off Atlantic Iberia during Late Neolithic and Chalcolithic Periods

Radiocarbon dates on marine shells have not been used as extensively as charcoal or bone dates for the setting up of absolute chronologies because interpreting these dates is complicated by the marine radiocarbon reservoir effect. Nevertheless marine shellfish were used widely at least during the Holocene and their shells are abundant and usually well preserved in archaeological deposits located near shorelines. Consequently prior research concerning the oceanographic conditions and the marine radiocarbon reservoir effect of a particular coastal area is needed in order to set up reliable chronologies for that region. Values of regional marine radiocarbon reservoir effect – ΔR – of coastal waters off Atlantic Iberia, some of its variability along the Holocene and its correlation with the upwelling phenomenon were determined during previous research. More data related to the ΔR values for western Portuguese coastal waters during the Late Neolithic and the Chalcolithic, a time interval badly sampled in previous research, were recently obtained. These values can be compared with ΔR values already determined for the Gulf of Cadiz. Besides the importance of these values for a better knowledge of the palaeoceanography and palaeoclimatology of Atlantic Iberia, from now on archaeologists can set up reliable chronologies for Late Neolithic and Chalcolithic contexts using marine shell samples of that origin for radiocarbon dating.     

The religious politics of prophecy: Or, Richard Brothers's Revealed Knowledge confuted

The messianic messages delivered to Londoners by the self-styled prophet, Richard Brothers, were regarded by many sceptical observers and pamphleteers as eccentric or, worse still, the embarrassing utterances of someone wishing to reprise the political turmoil of a by-gone era marred by religious ‘fanaticism’. This article shows the extent to which Brothers's messages, as set down in his Revealed Knowledge of the Prophecies and Times (1794–1795), were absolutely central to the religious politics and culture of the 1790s—or what one contemporary critic mockingly referred to as the ‘age of prophecy’. Brothers's prophecies came to the attention of the British government, which culminated in his arrest for treasonable practices in March 1795 when he became a cause célèbre, before being confined to an asylum for eleven years. He was deemed a criminal lunatic but, as this article seeks to demonstrate, his ‘prophetic imagination’ arose out of the same rich theological, political and cultural context that spurred ‘radicals’ like Tom Paine, whilst inspiring poets and artists such as William Blake. If the content of his prophecies were regarded by contemporary sceptics for having no validity, it remains true to say that Richard Brothers, as an educated gentleman and naval officer, dramatically altered 18th-century expectations and perceptions of what prophets were and the nature of prophecy itself.     

Stable carbon and nitrogen isotope variations in tooth dentine serial sections from Wharram Percy

Here we report δ¹³C and δ¹⁵N measurements of serial sections of human deciduous and permanent tooth dentine from archaeological samples taken from the medieval village site of Wharram Percy, Yorkshire, UK. We found a pattern of enrichment, for both δ¹³C and δ¹⁵N, where the tooth crown was greater than the cervical part of the root, which in turn was greater than the apical portion of the root and the associated rib collagen values. This pattern reflects a decrease in the consumption of isotopically enriched breast milk and the introduction of less enriched weaning foods in the diet. The (mean±SD) difference between the deciduous second molar crowns and corresponding rib samples from the same individuals after 2 years of age was 1.2±0.4‰ for δ¹³C and 3.2±0.8‰ for δ¹⁵N. The δ¹⁵N values are as predicted, but as there were no C₄plants at Wharram Percy, this 1.2‰ enrichment in δ¹³C represents clear evidence of a carbon trophic level effect in collagen from breastfeeding infants. Carbon and nitrogen results also show that the infant diet among those who died in infancy did not differ from those who survived into childhood. This study demonstrates the promise of using dentine serial sections to study the temporal relationships of breastfeeding, weaning, and dietary patterns of single individuals.     

Application of magnetic susceptibility on polished stone tools from Western Hungary and the Eastern part of the Czech Republic (Central Europe)

A non-destructive method – magnetic susceptibility (MS, κ) measurement – was used to characterize about 360 Neolithic, Copper and Bronze age polished stone tools of the Miháldy collection (Laczkó Dezső Museum, Veszprém, Hungary), composed of artefacts from three Neolithic (Moravian Painted Ware) workshops around a source of greenschist at Želešice near Brno (Moravia, Czech Republic) and semifinished artefacts from workshops at Neolithic mines in the Jizerské hory Mts. (Bohemia, Czech Republic); in addition, rock reference samples collected from the possible provenance areas and rock outcrops in the Czech Republic, Slovakia and Hungary were analysed as comparative material with the same method. We elaborated a model experience to control the thickness correction factor (TCF) following Williams-Thorpe et al. (2000).Among various stone raw materials of polished artefacts we found basaltic rocks and greenschists-metabasites as the most common.     

Taxonomic, anatomical, and spatio-temporal variations in the stable carbon and nitrogen isotopic compositions of plants from an African savanna

Stable carbon (δ¹³C) and nitrogen (δ¹⁵N) isotope ratios are commonly used to reconstruct palaeodiets and palaeoenvironments. The method is based on our knowledge of isotopic patterns in plants, which are subject to taxonomic and environmental variability. While previous researchers have addressed isotopic variability amongst plants, no studies have looked extensively at a broad suite of taxa over multiple temporal scales from within the savanna biome so as to provide baseline data for palaeodietary and palaeoenvironmental studies. Here we document variations in the isotopic compositions of plants collected over two years from the Kruger National Park, South Africa, with respect to species and anatomical differences, and the influences of geological substrate and spatio-temporal shifts in climate. Results show that environmentally-induced carbon isotopic variations in plants within this region are generally smaller than 2‰, which is lower than what has been previously reported for plants compared across multiple habitat-types. These data suggest that δ¹³C differences of 2‰ or more (or 1‰ if the diet is predominantly C₄) between animals from a given area reliably indicate real dietary differences. Plant δ¹⁵N values vary greatly between different microhabitats (by up to 4‰), responding to a range of environmental influences that may, in turn, significantly influence variation in animal δ¹⁵N values.     

Shell-gathering from mangroves and the seasonality of the Southeast Asian Monsoon using high-resolution stable isotopic analysis of the tropical estuarine bivalve (Geloina erosa) from the Great Cave of Niah, Sarawak: methods and reconnaissance of molluscs of early Holocene and modern times

This paper describes a reconnaissance, high-resolution, study of stable isotopes (δ¹⁸O and δ¹³C) from modern shells of the estuarine bivalve Geloina erosa, and those dated to the early Holocene that were harvested by people from mangroves near the Great Cave of Niah on the north coast of Borneo. This reconnaissance study provides high-resolution palaeoclimatic-palaeohydrological information concerning early human activity in the region and the past character of the Southeast Asian Monsoon. Laser ablation continuous flow isotope ratio mass spectrometry (LA-CF-IRMS) on modern shells of Geloina erosa revealed ‘saw-tooth’ stable isotopic profiles that bear a close resemblance to peaks and troughs of trends in recent local rainfall, including the 1998 El Niño drought, highlighting the potential of Geloina erosa for reconstructing seasonality of the Southeast Asian Palaeomonsoon. LA-CF-IRMS analysis of prehistoric shells of Geloina erosa held in the Harrisson Archives of the Sarawak Museum revealed cyclical shifts in δ¹⁸O with similar amplitudes of variation as found in modern shells of Geloina erosa. As at the present day, this probably reflects the changing seasonality of the monsoon rains with shifts to negative δ¹⁸O values during periods of high runoff. Lighter mean δ¹⁸O values of the prehistoric shells, however, may indicate a greater annual surplus of rainfall and possibly consistent with the early Holocene strengthening of the summer monsoon at that time. The similarity of the last growth increment δ¹⁸O of the prehistoric shells to their mean δ¹⁸O profile values suggests that gathering took place during times of moderate runoff.     

A system for classification and description of the horn cores of cattle from archaeological sites

A system is proposed for the classification and sexing of the horn cores of cattle recovered from archaeological sites. The cores are first divided into four groups depending on their length. The terms “small”, “short”, “medium” and “long horned” are given to these groups but bear no relation to the names used for modern breeds of cattle. After differentiation according to length, the sex of the core is designated by visual appraisal of the shape, curvature and angle of attachment of the cores to the frontal bones. It is not claimed that the sex of individual horn cores can always be established but from the sample of 80 cores that we tested by statistical analysis (presented in an appendix) it was evident that the categories based on length and assessment of sex did separate out as expected.