The Rolt Memorial Lecture 2018: Science and Engineering at War in Orkney

Initially conceived as a contribution to a conference which was to have been based in Caithness and was to have included a visit to Orkney, this paper examines the scientific and technological background to some of the wartime remains associated with the defence of Scapa Flow, the Royal Navy’s principal fleet anchorage in home waters in World Wars I and II. Summarising the surviving evidence of selected aspects of vessel-related, marine and aerial science and engineering around Scapa Flow, it is prefaced by a short account of Tom Rolt’s own wartime career, and concludes with a comparative appreciation of his place in the pantheon of literary engineers.     

Shifting Bordering and Rescue Practices in the Central Mediterranean Sea,October 2013–October 2015

This counter‐mapping project illustrates the areas of intervention of different operations geared toward rescue and enforcement between 2013 and 2015, including the Italian Navy's “Mare Nostrum” search and rescue mission, the EU border agency Frontex's “Triton” enforcement operation, the humanitarian interventions of commercial vessels, and the action of civil‐society rescue vessels such as those operated by Médecins Sans Frontières (MSF—Doctors Without Borders). The project offers a spatial understanding of the Mediterranean border‐scape, the practices of rescue and enforcement that occur within it, and the risk of sea‐crossing at this particular moment. Through these maps, the Central Mediterranean Sea emerges as a striking laboratory from which novel legal arrangements, surveillance technologies, and institutional assemblages converge.     

First discovery of ancient soft‐stone (chlorite) vessel production in Arabia: Aqir al‐Shamoos (Oman)

Soft‐stone vessels are a prominent feature of ancient culture throughout south‐east Arabia and the Gulf. Chlorite and steatite occur naturally in the al‐Hajar Mountains of the United Arab Emirates (UAE) and Oman; but until now, apart from the discovery of a few unfinished pieces, ancient production of soft‐stone vessels had yet to be documented in Arabia. This paper reports the discovery and preliminary analysis of soft‐stone vessel production at the site of Aqir al‐Shamoos. At this small and secluded mountain village, a range of soft‐stone vessels that are well known in the south‐east Arabian Iron Age were produced on a scale far beyond what was needed for local consumption.     

Compositional study of bronze vessels from the Derveni tombs of central Macedonia of the fourth century bce using energy‐dispersive micro‐X‐ray fluorescence (EDμXRF) spectrometry

The chemical composition of 61 copper alloy vessels was studied non‐invasively by energy‐dispersive micro‐X‐ray fluorescence (EDμXRF) spectrometry. The vessels were found in five tombs (A, B, D, Z and H) at Derveni in central Macedonia, Greece, which belong to the cemetery of the ancient city of Lete. The tombs are dated to the last quarter of the fourth century bce . The opulence of the numerous grave offerings denotes the high social status of the deceased within Macedonian society. The material under study was divided into two main groups according to their appearance and use. The first group included 44 vessels with a golden appearance for use in banquets; the second group consisted of 17 dark vessels for domestic use. The aim of this research was to study the vessels' technology according to their chemical composition. Both golden and dark vessels consisted of a binary Cu‐Sn alloy and a slight amount of impurities (Fe, Ni, Zn, Pb, As, Co, Sb, Ag, Ti). It is probable that during construction the ancient metalsmiths were taking into account criteria such as the desired appearance, cost of metals, future use and physical properties such as resistance to corrosion. Banquet vessels had a consistent chemical composition in all their different parts compared with those for domestic use. The only chemical element used systemically for alloying purposes, except Sn, was Pb in order to improve the castability of the bases and handles of the vessels. The study provides additional information about the metalworking of bronzes in central Macedonia in the fourth century bce, as well as about the access Macedonian metalworkers had at the time to the raw materials for such use.     

The conservation and management of historic urban space

In practice, the care of historic urban space is dominated by planning professionals whose bias is towards the broad remit of the conservation of the built heritage; it remains the exception for other professions to take an active role in the protection of spatial elements of the historic townscape. Neither do these areas enjoy the same degree of statutory protection as their built counterpart, even though they may have played an equally important role in the evolution of our towns and are an integral part of the urban form. This study is the first stage of the author's on‐going research into the value of historic space within the modern urban environment and the level of protection afforded it by the planning system. The results of this pilot study are used to suggest a professional and statutory framework, based upon inter‐disciplinary co‐operation, from which the full value of townscapes may be safeguarded in the future.     

‘Birds,bogs and forestry’ revisited: The significance of the flow country controversy

This paper evaluates the significance of the battle between forest and conservation interests in the Flow Country of northern Scotland during the late 1980s. It summarises the key arguments for and against afforestation as they were presented at the time, and reviews their validity in the light of subsequent developments. Commercial afforestation was claimed to be an economically valuable land use in a region with few alternatives, whereas conservationists presented the Flow Country as a wetland habitat of international significance. The controversy had far‐reaching consequences both for forest practice and nature conservation in Scotland and the UK. The break‐up of the Nature Conservancy Council and the remit given to Scottish Natural Heritage, the negative public perception of commercial forestry, the adoption of multiple objective forest management, Indicative Forest Strategies, and the participatory philosophy in conservation, can all be wholly or partly traced to the controversy. Ultimately, the controversy is shown to have had positive outcomes both for conservation and forest practice.     

Provenance of Red‐Figure Pottery of the Classical Period Excavated at Olympia

Neutron activation analysis (NAA) has been applied to a set of red‐figure pottery fragments excavated in Olympia, in Elis: (a) to determine the provenance of these vases, since this is difficult by archaeological means, and the vessels might be local Elean or Attic, Corinthian or Italian products; and (b) to determine the characteristic elemental pattern of the clay paste prepared by the potters of this Elean region. Included for comparison are several Corinthian sherds excavated in Kyme, Italy, that are archaeologically classified as exports from Corinthia to Italy, and fragments of local Italian Corinthian imitations. The majority of the red‐figure vases were made locally in the north‐western Peloponnese and show the elemental pattern termed OlyA, which is represented in many vases and clay samples from this region that were known previously. It is not very different from the well‐known pattern of the north‐eastern Peloponnese (Argolid/Corinth) termed MYBE (Mycenae/Berbati), but can be separated by its lower Cs, Rb and K concentrations, as proven by many sherds from the Argolid and wasters from Berbati. Only a few red‐figure vessels are imports from Attica, but none come from Italy.     

The Depositional Contexts of the Ships from Thonis‐Heracleion,Egypt

Over 70 ancient vessels have been discovered by the Institut Européen d'Archéologie Sous‐Marine in the port‐city of Thonis‐Heracleion, Egypt. These were deposited both individually and in groups from the 8th to the 2nd century BC. This paper investigates the contexts of these vessels to suggest that a variety of explanations—shipwrecking, ritual deposition, abandonment, and structural reuse—account for their deposition. It also seeks to place these events within the changing landscape of Thonis‐Heracleion to understand the agency behind many of the decisions about what to do with old ships and boats at the end of their use‐life.     

ANALYSIS OF FIRST MILLENNIUM bc GLASS VESSELS AND BEADS FROM THE PICHVNARI NECROPOLIS,GEORGIA*

The Pichvnari necropolis on the Black Sea coast of Georgia lies in an area known in the late first millennium as ‘Colchis’, on part of the trade route leading to the Orient. The burials of the necropolis date to the late fifth century bc and frequently contain grave goods, including extremely well‐preserved polychrome glass beads and core‐formed vessels. This paper presents a study of these vessels both stylistically and archaeologically and using SEM–WDS and LA–ICPMS. It reveals that the vessels have compositional differences that may point to multiple manufacturing sites. One of the vessels appears stylistically unique and may exhibit one of the earliest uses of manganese as a decolorizer. Major and minor element data for the vessels suggest that they may belong to the same ‘Levantine’ group as many Roman glass objects, suggesting that a source of sand on the coast of the Levant could have been used in their production. The beads clearly show glass with both natron‐ and plant ash‐based flux with distinct rare earth compositions, showing multiple sites of production, some of which were probably either in the Middle East or the Indian subcontinent.     

Molecular evidence for the mixing of Meat,Fish and Vegetables in Anglo‐Saxon coarseware from Hamwic,UK

Absorbed lipid residues from 24 seventh‐ to ninth‐century coarseware potsherds from the major Anglo‐Saxon trading centre of Hamwic (Southampton, UK) were analysed by gas chromatography – mass spectrometry (GC–MS) in order to reconstruct the dietary habits of its population. The results show that the vessels were used for preparing ruminant fats and leafy vegetables. In addition, evidence was found for a minor contribution of aquatic foods. Beeswax was found once and most probably relates to a sealing function or to honey. Remarkable features were: (i) the isomeric mixture of octadecenoic acid (C_18:1 Δ^{7,8,9,10,11,12,13,14,15,16}) and 8‐ to 16‐hydroxyoctadecanoic acid, and (ii) the co‐occurrence of C_17:1, C_19:1 and isoprenoid fatty acids. These features were proposed as biomarkers for ruminant and aquatic food sources, respectively. Furthermore, the carbonyl position distribution in mid‐chain ketones was used to identify mixtures of animal‐ and plant‐derived ketones. The paper highlights the difficulty in interpreting complex lipid signatures that show a mixture of various foods, as observed in the majority of the samples. This was linked to the preparation of stews or the recycling of vessels. The results are considered alongside ceramic usewear data and existing data relating to environmental remains recovered from the Hamwic excavations.     

EXPERIMENTAL EVIDENCE FOR THE PROCESSING OF MARINE ANIMAL PRODUCTS AND OTHER COMMODITIES CONTAINING POLYUNSATURATED FATTY ACIDS IN POTTERY VESSELS*

ω‐(o‐Alkylphenyl)alkanoic acids are known to form in vitro from triunsaturated fatty acids following protracted heating. These compounds have recently been identified in absorbed lipid extracts obtained from archaeological pottery vessels, providing a potentially valuable new class of indicator for the processing of commodities, such as marine oils, which contain high abundances of polyunsaturated fatty acids. Experiments were conducted to assess whether ω‐(o‐alkylphenyl)alkanoic acids form when pure compounds and complex triacylglycerol mixtures are heated with a fired clay. The results demonstrate that ω‐(o‐alkylphenyl)alkanoic acids are only produced following heating of unsaturated fatty acids (tri‐, di‐ and monounsaturated species) or complex unsaturated fatty acyl lipids at around 270°C. Heating saturated fatty acyl lipids does not yield ω‐(o‐alkylphenyl)alkanoic acids. Thus, when searching for evidence for the processing of marine derived animal fats in archaeological pottery vessels, it is essential that: ω‐(o‐alkylphenyl)alkanoic acids of carbon length C₁₈ and C₂₀ should be present, ideally with C₂₂ also detectable (if only in trace abundances), together with at least one of the three isoprenoid fatty acids (phytanic, pristanic or 4,8,12‐tetramethyltridecanoic acid).     

The Achill Yawl: vernacular boats in historical context on Achill Island,Ireland

Achill yawls, originally introduced to Ireland as ships' boats aboard Norwegian merchantmen, developed into distinct working vessels along Achill Island's shores during the 19th century. These boats were subsequently modified for recreational racing in the mid‐20th century. Despite changes to their design, they are often nostalgically viewed as traditional symbols of an Achill islander identity, though their popularity may have been prompted by late‐19th‐century British legislation. The authors take an ethnographic approach in interpreting Achill yawls over time, contextualizing their social functions through an exploration of primary historical and photographic archives, extant vessels, and interviews with Achill islanders. © 2010 The Authors     

And Now They Are Gone: documenting the last sailing lighter of Nevis,West Indies

The island of Nevis in the eastern Caribbean was until recently home to a unique traditional‐built sailing lighter. The last two working vessels were hauled out for the last time only in 2001. The lighters of Nevis have a rich history and were built without plans, conforming to traditional proportions and practices. One of these vessels was carefully documented by the author in the grounds of the Horatio Nelson Museum in Charlestown before it completely succumbed to the elements. The vessels have since deteriorated and are gone. The maritime legacy of Nevis and the lighters are described. © 2012 The Author     

NON‐DESTRUCTIVE ANALYSIS OF ‘ORIGINAL’ SONG DYNASTY GUAN WARES AND LATER IMITATIONS FROM THE PALACE MUSEUM COLLECTIONS,BEIJING

Fifty‐eight porcelain samples in Guan ware style from the collections of the Palace Museum in Beijing were analysed using non‐destructive ED‐XRF. These included 40 vessels that were traditionally ascribed as Guan wares of the Song Dynasty, and 18 vessels traditionally ascribed as imitation Guan wares, made during the Ming and Qing Dynasties. The purposes of this study were: (1) to cross‐check the traditional identification of these wares with the new classification based on their chemical compositions; and (2) to carry out a provenance study of the authentic Song Guan wares—that is, to compare the chemical compositions of the authentic Song Guan wares with those of the shards unearthed from the known Guan ware kilns of the Song Dynasty. This study shows that: (1) the chemical compositions of the glaze are significantly different between the Song Guan wares and the imitation wares—among the 58 wares tested, seven are likely to have been misidentified by the traditional method; and (2) the glaze compositions of the authentic Song Guan wares themselves are not homogeneous, and they can be divided into three groups. The provenance of these groups was briefly investigated.     

TECHNOLOGICAL STUDY OF PTOLEMAIC – EARLY ROMAN FAIENCE FROM MEMPHIS,EGYPT*

Fourteen fragments of faience vessels from the Ptolemaic/Roman period found at the Egyptian site of Memphis, near Cairo, were analysed by SEM. The fragments included high‐relief polychrome vessels, which are first produced in numbers in this period. Analysis allowed the composition and microstructure of the vessels to be assessed and conclusions drawn as to the raw materials of manufacture. Combining this information with archaeological evidence from excavation of the kilns and associated finds, it was possible to reconstruct the production technology of the vessels.     

The Altai Road: Visions of Development across the Russian–Chinese Border

The Altai Republic is a poor mountainous region of Russia squeezed between Kazakstan, China and Mongolia. A project to build a road connecting Russia with China through the Altai has been conceived within a quadripartite regional co‐operation project, supported by Western development organizations. Yet while at the Chinese side of the border road construction went ahead, in Russia, a coalition of globally connected ecologists, romantic ‘Eurasianists’, nostalgic conservationists and anti‐Chinese xenophobes turned the road into a political hot potato. This case study, in which production and investment are the focus on the Chinese side and environmental protection is key on the Russian side of the border, shows the inadequacy of approaches that pit global capital/international (read: Western) organizations against local (read: non‐Western) resistance or adaptation. China's entry into the politics of international development may be a setback for development critics who have helped engineer a ‘cultural turn’ in institutions such as the World Bank.     

Standards of self‐determination and standards of minority‐rights in the post‐communist era: a historical perspective

Abstract. In the recent Yugoslav crisis, the decisions of the international community sparked off a sharp debate on the recognition of self‐determination claims, reminiscent of the debates in the aftermath of the First World War. This article compares and contrasts the principles and practices of the international community in these two periods. It draws a parallel between the simultaneous strengthening of self‐determination norms and minority protection norms, first at Versailles and then in the midst of the recent Balkan crisis. Though the processes showed many similarities, there was one crucial difference: by the time of the Balkan crisis, the international community had come to regard minority autonomies as the most appropriate form of protection for compact minorities in new nation‐states born of ethnic separatism. While in the Versailles system minority protection norms were meant as compensations for the denial of self‐determination, in the Balkan crisis the autonomies were regarded as the highest form of minority protection, which in turn increased the perceived risk of minority separatism in new states. It is in this context that the article presents the debate over the traditional and more recent approaches to the ‘unit question’, which has haunted scholars and policy‐makers ever since the concept of self‐determination emerged as an international norm.     

PLAIN POTTERY AND SOCIAL LANDSCAPES: REINTERPRETING THE SIGNIFICANCE OF CERAMIC PROVENANCE IN THE NEOLITHIC

This paper focuses on plain, stylistically unvaried pottery from three Late Neolithic sites from the Mondego Plateau, Portugal, and investigates ceramic production and exchange among small‐scale prehistoric societies by means of thin‐section petrography and chemical analysis (INAA). The results show that the majority of the pottery was made with widely available, granite‐derived sedimentary clays, but petrographic differences between fabrics indicate collection at multiple locations within these deposits. Variation in chemical composition is consistent with site‐specific sourcing areas, while comparison with data from earlier sites in the Mondego and surrounding mountains suggests that such sources were geographically restricted within the plateau. In contrast, the small percentage of vessels produced with residual clays of metamorphic and intermediate igneous origin, which outcrop over 10 km and 30 km from the archaeological sites, demonstrates that plain pottery did circulate during the Neolithic beyond the funerary sphere. This is the product of the routines of mobility and social networks of Neolithic groups across the wider landscape, which involved the exchange of ‘mundane’ vessels. Finally, the study demonstrates that micro‐regional provenance studies can provide significant insights into prehistoric social landscapes if the data are interrogated beyond simplistic classifications of local and non‐local.     

ANOTHER ONE BITES THE DUST: QUALITY CONTROL AND FIRING TECHNOLOGY IN THE PRODUCTION OF MEDIEVAL GREYWARE CERAMICS IN CATALONIA,SPAIN

The following study sheds new light on the quality control procedures of ancient potters by comparing cooking vessels exported from the medieval kiln‐site of Cabrera d'Anoia (Barcelona) with ‘wasters' that were discarded at source. The firing temperature of examined sherds indicates that only pots subjected to a maximum temperature of 800–850°C were offered for sale. The potters at Cabrera d'Anoia appear to have been fully aware of the optimal balance between thermal and physical shock resistance of vessels fired within this range and strived to control firing in order to achieve better products than that of competing workshops.