Correlating archaeological and palaeoenvironmental records using a Bayesian approach: a case study from Sutton Common,South Yorkshire,England

This paper presents a case study aimed at correlating archaeological ‘events’ (obtained from radiocarbon measurements and dendrochronology) from the site of Sutton Common with a radiocarbon-dated pollen sequence obtained from a palaeochannel deposit adjacent to the area of the main archaeological activity. It demonstrates the use of a Bayesian approach to quantifying whether the timing of palynological ‘events’ interpreted as reflecting anthropogenic impacts are likely to be associated with archaeological ‘events’. The results suggest that Bronze Age activity in the form of a mortuary enclosure and associated cremation burials are probably not contemporary with the palynological evidence for disturbance to the oak–hazel woodland in this period. Subsequent evidence for local woodland clearance and agriculture is estimated to precede the construction of the large Iron Age enclosure in 372 BC, with increases in ‘anthropogenic indicators’ following this ‘event’. The construction of the site does not appear to have had a pronounced impact on the local vegetation, with hazel the only woody taxon to show clear reductions. Despite the use of a substantial number of oak timbers in the enclosure palisade, percentages of oak remain remarkably stable. Later farming activity on the site probably post-dates the end of activity in the enclosures. The value of the methodology is discussed in relation to quantifiable and robust correlations of archaeological and palaeoenvironmental narratives of landscape and human activity.     

A systematic approach to the recovery and identification of starches from carbonised deposits on ceramic vessels

Starch granules are being successfully recovered from an increasing range of artefacts. Here we present the recovery of starches from carbonised ceramic ‘foodcrusts’ from late Mesolithic–early Neolithic residues at the site of Neustadt in northern Germany. A method for investigating background loading of residues with contaminant starches is proposed by comparing interior ‘foodcrusts’ versus exterior ‘sooting’, for the purposes of eliminating samples with insignificant quantities of grains from subsequent identification procedures. The classification of starches to plant taxon is traditionally achieved by manual observations and measurement of nominal and ratio morphological variables. Here, we present a method for the automated classification of granules, using software developed in-house. The results show that when multiple granules are considered, the species selected as modern reference examples can be classified to high levels of specificity. When applied to the archaeological samples we show that wild plant resources persist in importance across the transition to agriculture, with high proportions of granule forms consistent with acorn (Quercus sp.) occurring in all samples. Hazelnut (Corylus avellana) types are less well-represented suggesting it was not an important food in the context of pottery, and may have been over-represented in the repertoire of hunter–gatherer resources. Cereals are not represented in any of the samples, supporting the notion that their adoption may have been a slow process, occurring more gradually than for other domesticated foods, or that they were not initially processed in ceramic vessels.     

Thomas Fitzherbert's reason of state

Thomas Fitzherbert's two-part Treatise concerning Policy and Religion (1606, 1610) was a rebuttal of unidentified Machiavellians, statists or politikes and their politics and policies. The work was apparently still well-regarded in the following century. Fitzherbert's objections to ‘statism’ were principally religious, and he himself thought the providentialist case against it unanswerable. But for those who did not share his convictions, he attempted to undermine Machiavellism on its own ground. Like both ‘Machiavellians’ and their opponents, he argued by inference from historical examples, but with a particularly copious knowledge of historians ancient, medieval and modern to draw on. Equally, however, he deployed the principles of speculative (principally Aristotelian) ‘political science,’ as well as theology and jurisprudence, to demonstrate that the kind of knowledge that Machiavellians required to guarantee the success of their ‘reason of state’ policies was simply unobtainable. A particularly striking strategy (perhaps modelled on that of his mentor and friend Robert Persons) was Fitzherbert's attempt to demonstrate, on the Machiavellians’ own premises, that they advocated policies which were very likely to fail, and would be visited with divine punishments sooner as well as later, whereas policies that were compatible with faith and morals were also much more likely to succeed, even judged in purely human and ‘statist’ terms.     

Mycobacterium leprae genotype amplified from an archaeological case of lepromatous leprosy in Central Asia

We have amplified Mycobacterium leprae DNA from the skeleton of an adult human female exhibiting signs of lepromatous leprosy (LL). The remains were excavated from the site of Devkesken 6 on the Ustyurt plateau of Uzbekistan and date to between the 1st and 4th centuries AD. Recovered DNA was fragmented but of sufficient quality and quantity to allow a series of biomolecular genotyping methods to be applied. These methods included variable nucleotide tandem repeat (VNTR) typing of two microsatellite and one minisatellite regions and also single-nucleotide polymorphism (SNP) typing for nine informative loci.Genotyping showed that the causative strain of M. leprae exhibited a SNP-type 3 profile, characteristic of cases associated geographically with Europe and North Africa. Further SNP sub-typing was performed and the data obtained from the Uzbek leper was compared with the same loci amplified from a case of LL recovered from Blackfriars, Ipswich, UK dating to between the 13th and 16th centuries AD. Unique group 3 subtypes were found in both the Uzbek case and Ipswich 1914. These appear to be ancestral to recent type 3 strains. Mycolic acid analysis confirmed the presence of M. leprae in the Uzbek samples. Phylogenetically informative SNPs and other polymorphic loci will contribute to the study of human migrations, as well as the origin and spread of leprosy.     

Obsidian provenance for prehistoric complexes in the Amur River basin (Russian Far East)

The sources of high quality volcanic glass (obsidian) for archaeological complexes in the Amur River basin of the Russian Far East have been established, based on geochemical analyses by neutron activation and X-ray fluorescence of both ‘geological’ (primary sources) and ‘archaeological’ (artifacts from the Neolithic and Early Iron Age cultural complexes) specimens. A major obsidian source identified as the Obluchie Plateau, located in the middle course of the Amur River, was found to be responsible for supplying the entire middle and lower parts of the Amur River basin during prehistory. The source has been carefully studied and sampled for the first time. Minor use of three other sources was established for the lower part of the Amur River basin. Obsidian from the Basaltic Plateau source, located in the neighboring Primorye (Maritime) Province, was found at two sites of the Initial Neolithic (dated to ca. 11,000–12,500 BP). At two other sites from the same time period, obsidian from a still unknown source called “Samarga” was established. At the Suchu Island site of the Early Neolithic (dated to ca. 7200–8600 BP), obsidian from the ‘remote’ source of Shirataki (Shirataki-A sub-source) on Hokkaido Island (Japan) was identified. The range of obsidian transport in the Amur River basin was from 50 to 750 km within the basin, and from 550 to 850 km in relation to the ‘remote’ sources at the Basaltic Plateau and Shirataki-A located outside the Amur River valley. The long-distance transport/exchange of obsidian in the Amur River basin in prehistory has now been securely established.     

Bronze Age landscape dynamics: spatially detailed pollen analysis from a ceremonial complex

The late Neolithic and early Bronze Age are periods marked by the construction of conspicuous concentrations of ‘ritual’ complexes, used for funerary rituals, seasonal gatherings and communal activities. Understanding the environmental context of monuments may provide detailed insights into relationships between the physical environment and the activities undertaken at individual monuments. Raised burial mounds (barrows) are generally assumed to have been constructed in open landscapes (the so-called ‘landscape openness’ hypothesis) thus rendering them highly visible in the surrounding landscape. This paper seeks to test to what extent vegetation (and in particular openness) around a dense concentration of barrows was actively managed, using three pollen sequences in close spatial juxtaposition to the archaeology. The local vegetation histories, supported by radiocarbon dating, demonstrate spatial differences in vegetation pattern both during the time of monument construction and use (c. 2000–1500 cal BC) and during subsequent periods. They do not support the ‘landscape openness’ hypothesis. This suggests that there is no single ‘blueprint’ for vegetation structure on and around these types of monument complexes. There is no evidence for major restructuring of the landscape during the early Bronze Age. The data describe a major transformation of the vegetation around 1500 cal BC (the Middle Bronze Age) in an area not known for archaeology of this date. This serves to emphasize the role of palaeoecology in augmenting the archaeological record of landscape re-organisation and transformation in prehistory.     

Light railways and the rural–urban continuum: technology, space and society in late nineteenth-century Belgium

Combining the literature on ‘city systems’ and its intermediary spatial categories with the discourse on ‘socio-technical’ hybrids, this article examines whether the early rural–urban condition in Belgium was the planned spatial outcome of infrastructure policy. More specifically, it analyzes the dialectic between the conception of light railways and the geographies of power, tracing its impact on the spatial organization of the territory. In 1911 the British sociologist Seebohm Rowntree stated that Belgium had gone further than any country in supplying its working class with gardens. The dense Belgian railway network encouraged workers to commute between land and labour, travelling from their homes in the healthy countryside to work in urban factories and mines. Despite the agricultural crisis and accelerating industrialization in nineteenth-century Belgium, infrastructure policy had resulted in a peculiar territorial balance between city and countryside by transforming agricultural labourers and farmers into industrial workers without forcing them to leave their ancestral villages. Rather than nostalgically clinging to a disappearing countryside, the government harnessed the modern technology par excellence, combining rails, steam and state management, to safeguard the country as well as to facilitate modern dynamic. Countryside preservation and accelerating industrialization were reconciled in a reshaped configuration that rendered the countryside and its inhabitants simultaneously rural and urban, traditional and modern. As most literature situates the genesis of rural–urban landscapes after the First and Second World War, this article on late-nineteenth-century Belgium adds a further facet to the recently growing international research on hybrid territories within the fields of urbanism and geography.     

Networks and Neolithisation: sourcing obsidian from Körtik Tepe (SE Anatolia)

This paper details the use of obsidian sourcing to reconstruct networks of interaction (or ‘communities of practice’) amongst populations of south-eastern Anatolia and the Near East in the context of ‘Neolithisation’ during the late 11th–early 10th millennia BC. EDXRF was used to elementally characterise 120 artefacts of Epi-Palaeolithic – Pre-Pottery Neolithic A date from Körtik Tepe in south-eastern Anatolia. Four eastern Anatolian sources are represented, mainly Bingöl A/B and Nemrut Da?, plus the first evidence for the use of Mu? obsidian. When the source data is integrated with the artefacts' techno-typological attributes it is possible to locate the assemblage within an Upper Tigris tradition (with some interesting local differences), which stands in stark contrast to contemporary practices in northern Mesopotamia and the Levant. These local and regional distinctions support recent views of the Neolithic being much more heterogeneous, with a ‘mosaic’ of community-specific/local traditions of subsistence practices, raw material choices and lithic technologies during the Younger Dryas–Early Holocene.     

Conventions of climate change: constructions of danger and the dispossession of the atmosphere

Climate change has emerged as one of the key issues of the early years of the twenty-first century, bringing together concerns about human relations to nature, the responsibility of rich nations to poorer, the links from local activities to global conditions, and the obligations of present to future generations. This paper focuses on three key ‘narratives’ that are enshrined in international climate policy – asserting that ‘dangerous climate change’ is to be avoided; that the responsibility for climate change is common but differentiated; and that the market (in the form of carbon trading) is the best way to reduce the danger. The goal of the paper is to analyse the origins of these narratives, the power relations they reflect and promote, and some of the concepts and images used to support them, including those of climate determinism, climate stabilisation, ‘burning embers’, ‘tipping points’, Global Warming Potentials, targets and timetables, and carbon credits. I argue that by choosing the market solution of trading carbon we have created a new and surreal commodity, unfairly allocated pollution rights to nation states based on 1990 emission levels, and established a new set north–south relations and carbon transactions in the name of sustainable development.     

From legalism to symbolism: anti-mobility and national identity in Israel, 1948–1958

The paper traces the historical roots of anti-mobility discourse in Israel and examines the changing policies and practices geared towards the prevention of mass Jewish departure during its first decade of statehood. It identifies two distinct phases in the battle waged against international mobility, under the headings of ‘Legalism’ (1948–1953) and ‘Symbolism’ (1954–1958). While the former was led by official agencies of the young state and required the passing of laws and other administrative decrees, the latter was mainly a society-led campaign of ad-hoc symbolic practices by groups seeking to de-legitimize international mobility and emigration in particular. Despite their qualitative differences, both were instrumental to the national identity formation project in postindependence Israel, assisting in the construction and maintenance of (physical and cultural) boundaries between Jews in Israel and others – both Diaspora Jews and non-Jews.     

Interrogating post-democratization: Reclaiming egalitarian political spaces

There is now an emerging body of thought on the dynamics of de-politicization, the ‘disappearance of the political’, the erosion of democracy and of the public sphere, and the contested emergence of a post-political or post-democratic socio-spatial configuration. I situate and explore this alleged ‘post-democratization’ in light of recent post-Althusserian political thought. I proceed in four steps. First, I discuss the contested configurations of this post-politicization and the processes of post-democratization. In a second part, I propose a series of theoretical and political arguments that help frame the evacuation of the properly political from the spaces of post-democratic policy negotiation. This diagnostic is related to a particular interpretation of the distinction between ‘the political’ and ‘polic(e)y/‘politics’. In a third part, I argue how emancipatory–democratic politics can be reclaimed around notions of equality, and freedom. In the concluding part, perspectives for re-vitalising the political possibilities of a spatialized emancipatory project are presented. The crux of the argument unfolds the tension between politics, which is always specific, particular, and ‘local’ on the one hand and the universal procedure of the democratic political that operates under the signifiers of equality and freedom on the other.     

Blind tests in microscopic residue analysis: comments on Wadley et al. (2004)

In this comment, we critique a recent paper by Wadley, Lombard and Williamson entitled ‘The first residue analysis blind tests: results and lessons learnt’ (Journal of Archaeological Science 31 (2004) 1491–1501) as a means of assessing the role and utility of such blind tests. We find that apart from not being the first residue analysis blind tests, the tests conducted by Wadley et al. exhibit problems at each stage of experimental design. Most of the issues identified can be attributed to loss of experimental control, including lack of documentation of residues prior to blind testing and contamination of their samples. We suggest possible means of avoiding these issues in future microscopic residue analysis blind tests.     

On the spatial and technological organisation of hafting modifications in the North African Middle Stone Age

Aterian stone tools represent one of the clearest indications of technological regionalisation in the North African Middle Stone Age. Found in association with Homo sapiens skeletal remains and more recently with symbolic material culture, the Aterian is widely thought to reflect modern human identity and cognition. As a lithic industry, the Aterian has been primarily defined by the presence of stemmed or tanged tools, but there has been little quantitative study of the relationship between tangs and other forms of hafting modifications, such as shouldering and basal thinning. Understanding the diversity of these features and their relationships with one another will clarify the organisation and adaptations of North African populations during Marine Isotope Stage 5 (MIS 5, ∼130–70,000 years ago), a critical timespan for modern human dispersal. This paper presents the results of a stepped analysis of fifteen Aterian and other non-Aterian assemblages from the same spatial and temporal bracket in North Africa. Using Correspondence Analyses together with a suite of other statistics, the results indicate that tanging represents a widely applied strategy of hafting a variety of different tools. On the other hand, basal thinning is specifically correlated with lightweight, highly retouched points. The distribution of these features appears to reflect geographical proximity and shared environments, rather than articulating with traditional named industries. This in turn suggests that a continued focus on tangs to differentiate an ‘Aterian’ from other, contemporary North African MSA industries may be obfuscating regional-scale patterns of technological diversity.     

Conversing with the minority: relations among Christian,Jewish, and Muslim women in the high middle ages

This essay introduces a special issue of the Journal of Medieval History on the topic of ‘Conversing with the minority: relations among Christian, Jewish, and Muslim Women in the High Middle Ages’. Despite the fact that both interfaith relations and women's history are now well established subdisciplines within the field of medieval studies, the question of how medieval women themselves established cross-sectarian relations has rarely been explored. Documenting women's history is almost always problematic because of limited source materials, but this essay suggests that much can be learned by looking at areas where Christian, Jewish, and Muslim women shared certain facets of their lives: either by reason of social relations tied to religion and ethnicity (money-lending being a common bond between Jewish and Christian women, slavery between Christian women and Muslims) or by reason of events that connected them due to their shared sex and gender (childbirth, caring for the dead, even cosmetics). By actively looking for ‘spaces’ where women would be found, we can begin to hear the dialogues that passed among women across religious lines.     

An improved OSL chronology for the Still Bay layers at Blombos Cave,South Africa: further tests of single-grain dating procedures and a re-evaluation of the timing of the Still Bay industry across southern Africa

This paper presents a series of new single-grain optically stimulated luminescence (OSL) ages for the Still Bay at Blombos Cave, South Africa, and compares them to previously published OSL, thermoluminescence (TL) and electron-spin resonance (ESR) ages for this site. Details are provided about the measurement and analytical procedures, including a discussion of the characteristics of the OSL signals of individual quartz grains. This forms the basis for further investigations into the sensitivity of the equivalent dose (D_e) estimates to a range of different analytical approaches, including changes in the size of the test dose, the choice of signal integration interval, the subtraction of an appropriate background, and isolation of the most light-sensitive (‘fast’) component of quartz OSL. We also report the results of an inter-operator test of D_e determination using seven new samples from Blombos Cave, and demonstrate the reproducibility of results obtained for two samples that had been dated previously at another laboratory and were measured and analysed again in this study. Together, these tests validate the robustness of the Blombos Cave single-grain OSL age estimates to a variety of alternative OSL dating procedures. We have incorporated, for the first time, these ages for Blombos Cave into a data set of all single-grain OSL ages for Still Bay and Howieson's Poort sites across southern Africa, and have used a statistical model to re-evaluate the timing and duration of the Still Bay industry. We calculate the most plausible start and end dates of the Still Bay as 72.2 ka and 71.3 ka, respectively – amounting to a duration of 0.9 ka – and estimate (with conventional 95% confidence) that this industry began no earlier than 75.5 ka, ended no later than 67.8 ka and lasted no longer than 6.6 ka.     

The development of the longbow in late medieval England and ‘technological determinism’

Traditional understandings of the development of the medieval English longbow and its role in the fourteenth-century ‘infantry revolution’ have recently been challenged by historians. This article responds to the revisionists, arguing based on archaeological, iconographic and textual evidence that the proper longbow was a weapon of extraordinary power, and was qualitatively different from – and more effective than – the shorter self-bows that were the norm in England (and western Europe generally) before the fourteenth century. It is further argued that acknowledging the importance of the weapon as a necessary element of any credible explanation of English military successes in the era of the Hundred Years War does not constitute ‘technological determinism’.     

Human refugia in Australia during the Last Glacial Maximum and Terminal Pleistocene: a geospatial analysis of the 25–12 ka Australian archaeological record

A number of models, developed primarily in the 1980s, propose that Aboriginal Australian populations contracted to refugia – well-watered ranges and major riverine systems – in response to climatic instability, most notably around the Last Glacial Maximum (LGM) (∼23–18 ka). We evaluate these models using a comprehensive continent-wide dataset of archaeological radiocarbon ages and geospatial techniques. Calibrated median radiocarbon ages are allocated to over-lapping time slices, and then K-means cluster analysis and cluster centroid and point dispersal pattern analysis are used to define Minimum Bounding Rectangles (MBR) representing human demographic patterns. Exploring data between 25 and 12 ka, we find a refugia-type hunter-gatherer response during the LGM (∼23–18 ka) and again during the Antarctic Cold Reversal (ACR) (∼14.5–12.5 ka), with expansion in the intervening period. Several refugia persist between 25 and 12 ka, including (by Interim Biogeographic Regionalisation for Australia areas) Gulf Plains/Einasleigh Uplands, Brigalow Belt South, Murray Darling Depression, and Tasmanian Central Highlands. Others appear sporadically through the same period. These include South Eastern Highlands, NSW South Western Slopes, Sydney Basin, Warren, Murchison, Gascoyne, Central and Northern Kimberley, Ord Victoria Plain, Arnhem Plateau, MacDonnell Ranges and Central Ranges. The Pilbara may also have been a refugium during the LGM, but geospatial results are problematic for this region. Areas devoid of human activity (‘barriers’) include the main desert regions, especially in the south and west of the continent, although some of these may be the result of an absence of archaeological fieldwork. Point dispersal pattern analysis indicates a reduction in occupied territory of nearly 80% during the LGM. A reduction of close to 50% was also evident during the ACR. A large number of the refugia were in close proximity to glaciated areas during the LGM, and probably benefitted from increased summer snowmelt along the major river systems. The remaining refugia are likely the result of a range of local environmental and resource factors. We identify areas for future research, including a focus on regional studies to determine possible cryptic or idiosyncratic refugia emerging in phlyogeographic studies.     

Using the concept of genre de vie: French geographers and colonial Algeria, c.1880-1949

By the mid-twentieth century, French geographers had produced substantial works of research aiming to classify genres de vie. They had broken with the idea that nomadic and sedentary genres de vie were the successive stages of a universal history of human societies, and argued instead that they were the result of human adaptations to specific natural environments. Within this new conceptual framework, nomadism was thus understood as a form of highly evolved genre de vie responding to the particular characteristics of the steppe. But if pastoral nomadism was the best possible adaptation to the dry steppe zone, on what natural basis could the extension of European sedentary agriculture be justified? Scientific answers to this question were of strategic importance in Algeria which was the most important colony of settlement in the French empire and in fact often considered as a part of France. Through the analysis of a corpus of works published by institutionally recognized geographers concerning Algeria and Algeria’s indigenous genres de vie (including doctoral theses, articles in the Annales de Géographie and literary reviews), the paper attempts to show how the concept of the ‘adaptation of mankind’ to the natural environment, when applied to Algeria, generated a series of intractable divides and deep contradictions. This in turn requires us to reconsider the idea that in French geography, the neo-Lamarckian concept of natural determinism systematically supported a distinction between so-called ‘European’ and ‘Native’ populations. By examining precisely the scientific usages of the concept of genre de vie in the colonial and imperial situation, the paper will attempt to reveal how the academic debates of the time were shaped by competing views of the civilizing mission of French colonialism in Algeria.     

Application of lipid biomarker analysis to evaluate the function of ‘slab-lined pits’ in Arctic Norway

Gas chromatography–mass spectrometry (GC–MS) and bulk carbon isotope determinations have been performed on samples (‘cemented organic residues’, charcoal, sediment and fire-cracked rock) excavated from 12 slab-lined pits from various locations in Arctic Norway to test the premise that these archaeological features were used for the extraction of oil from the blubber of marine mammals, such as seal, whale and walrus. A wide range of lipid compound classes were detected especially in the cemented organic residues and in the charcoal samples. The presence of long-chain unsaturated and isoprenoid fatty acids together with oxidation and thermal alteration products of unsaturated acids such as dicarboxylic acids, dihydroxyfatty acids and ω-(o-alkylphenyl)alkanoic acids suggests that these features were used for marine oil extraction at elevated temperatures. Notably the location of the hydroxyl groups in the dihydroxyfatty acids provides a record of the positional isomer of the precursor fatty acid and allows confirmation that 11-docosenoic (cetoleic) acid, the most abundant C_22:1 isomer in marine oil, was a major component of the original lipid. Further information was provided by the presence of long-chain fatty acyl moieties in surviving triacylglycerols and the presence of cholesterol. A fungal metabolite, mycose (trehalose), was found in all samples apart from a fire-cracked rock and points to microbiological activity in the pits. Bulk isotope analysis conducted on the ‘cemented organic residues’ is consistent with modern reference samples of blubber and oil from seal and whale. These data provide clear analytical evidence of the function of slab-lined pits in the archaeological record and suggest widespread exploitation of marine mammals for producing oil for heating, lighting and myriad other uses in the past.     

‘Taken captive by the mystery of the Great River’: towards an historical geography of British geography and Atlantic slavery

By examining the case of James MacQueen (1778–1870), this paper initiates a research agenda that contributes to what David N. Livingstone has argued remains the most pressing task for historians of geography: to write ‘the historical geography of geography’. Born in Scotland in 1778, MacQueen was one of the many ‘arm-chair’ geographers whose efforts at synthesising contemporary and historical sources were a significant feature of the encounter between Europe and the rest of the world. Indeed, although he never visited Africa, his speculations about the course and termination of the River Niger turned out to be broadly correct. What makes MacQueen a particularly significant figure was the original source of his theory: enslaved Africans in a Caribbean plantation-colony. In this light, a remark that MacQueen's imagination was ‘taken captive by the mystery of the Great River’ carries a dark double-meaning, because ‘captive’ knowledge was the very source of MacQueen's interest in African geography. Beginning with MacQueen's time in Grenada, the paper explores a series of personal relations, textual traces and West African ethno-histories to reveal how his geographical knowledge and expertise were bound up with Atlantic slavery. This shows not only how the colonial economy, centred on the Caribbean, underwrote the production of geographical knowledge about Africa, but also how British geographical discourse and practice might be probed for traces of Atlantic slavery and enslaved African lives. More generally, the case of James MacQueen illuminates a broader field of relationships between Atlantic slavery, West African exploration, and the development of modern British geography in the late eighteenth and first half of the nineteenth centuries. Examining these relationships is key to writing a ‘historical geography of British geography and Atlantic slavery’ and contributes to postcolonial histories of the discipline by revealing the tangled relationships that bound geography and slavery, knowledge and subjugation, that which ‘captivates’ and those held ‘captive’.