Recent British research on prehistoric territorial boundaries

The British Isles are very rich, compared to the rest of Europe, in prehistoric boundary earthworks. There are difficulties in deducing prehistoric territories from them, mainly because of the incompleteness of other evidence of settlement patterns. Fortunately, in the past two decades there have been major advances in territorial studies, in particular, of the pattern defined by the reaves (long walls) on Dartmoor in Southwest England and in the Anglo-Saxon pattern in Southern England defined by boundaries in legal documents (charters). These studies enable some general principles of early land divisions to be deduced, particularly the relations of boundaries to the natural features of the terrain. These principles can be applied to the study of other early boundary earthworks, and, in some cases, reasonable deductions on the nature of the prehistoric estates can be made. The paper concludes with a discussion of major problems, namely, the dating of earthworks, the continuity of boundaries between prehistoric and historic eras, the functions of boundary markers, their chronological development, and their social implications.     

故宫博物院旧藏漆器文物中漆灰材质的科学研究

漆灰的修复是漆器文物修复工作的重要组成部分。为揭示故宫博物院旧藏漆器3种典型漆灰的材料构成及特点,以及为漆器修复工作提供科技支持,研究结合X射线荧光光谱、微区X射线衍射、红外光谱、纤维显微镜观测、热裂解-气相色谱/质谱联用等技术,综合分析了3种典型漆灰所含无机及有机原材料。研究结果表明：明代古梅花蕉叶式琴漆灰所用无机材料是动物角灰或骨灰及少量黏土,胶结材料则由中国大漆及少量植物油组成;清代黑漆描金大宝座漆灰的无机材料为含有方解石的黏土,胶结材料为熟桐油、猪血的混合物,此外,样品中还含有麻类纤维,为宝座木胎与漆灰层之间所裱麻布,宝座漆灰不但能提供平整髹漆表面,而且还对麻布有加固定型作用;清代黑漆地填金字张廷玉书圣训天伦对联漆灰的无机材料为黏土,胶结材料则为熟桐油、猪血的混合物。研究所用分析方法体系可实现漆灰原材料,特别是有机胶结材料的准确识别。3种典型漆灰的选材特点与中国古代漆器,特别是明清时期家具、器物制作用料传统相吻合,研究结果可直接应用于漆器文物修复方案的制定。     

A Neolithic dugout from a multi-period site near St Albans, Herts, England

In December 1988 rescue excavations on a multi-period gravel site 5 km south-east of St Albans revealed the charred remains of a probable logboat containing cremated human and animal remains. Radiocarbon dating indicated a date in the early 4th millennium BC. The site continued to be used sporadically until the Late Iron Age, and there is some indication that it may have continued to have a ritual significance. The excavation also recorded one (possibly two) Early Saxon sunken floor huts, and ovens and ditches associated with medieval Parkbury.     

中国古建筑中几种石灰类材料的物理力学特性研究

为探讨适宜于岩土文物保护加固的石灰类材料,对中国古建筑中几种石灰类材料及欧洲水硬石灰的化学组成和物理力学特性进行对比研究。研究表明烧料礓石、烧阿嘎土、欧洲水硬石灰NHL5及改性捶灰的化学组成主要是气硬性胶凝材料石灰CaO(或Ca(OH)2)和水硬性胶凝材料β-硅酸钙(β-CS)及铝硅酸钙(CAS),并且这些材料的结石体具有大的孔隙率及非常小的收缩变形性等特点,适宜于岩土文物的保护加固。除此之外,石灰、糯米灰浆、蛎灰、传统捶灰的主要化学组成为石灰CaO(或Ca(OH)2),实验研究结果显示,浆液的凝固速度慢,弹性波速小且上升速率慢,结石体虽然孔隙率大,但强度在短期内较低,易产生收缩变形,不适宜用于短时间内有强度要求的岩土文物保护加固,所以有必要对蛎灰和传统捶灰做进一步的改性研究,以便更广泛地应用于岩土文物的保护加固中。     

洛阳市西工区八一路东周车马坑

2004年10月,洛阳市文物工作队在洛阳市西工区八一路发现和清理了一座车马坑,坑内残存二车一马,出土了陶、铜、铅、玉、蚌等质地的遗物27件套。依据出土器物的形制特征,该车马坑的年代应为春秋晚期。     

Analyses of Early Medieval Stained Window Glass From the Monastery of Baume‐Les‐Messieurs (Jura,France)

The collection of early medieval window glass found in the abbey of Baume‐les‐Messieurs (Jura, France) is exceptional because it dates to the end of the eighth century, and due to the number of fragments as well as their state of conservation. Different colours and forms have been identified. These pieces are a rare opportunity to address the glass craft, its recipes and techniques for a phase of its history that has remained little known. Analyses in PIXE–PIGE prove that, in addition to fragments from two soda glass items, the pieces are made from wood‐ash glass. Most of them probably came from the same production and the raw material is present in the region. At this early stage of wood‐ash glass production, the glassmakers had mastered the glass as well as the colour processes.     

The functional dimensions of earth oven cooking: An analysis of an accidently burned maize roast at the C. W. Cooper site in West-central Illinois

Abstract

Despite the prevalence of earth ovens, a subclass of pit features used for cooking, there is little consensus regarding how these cooking features were used or about the foodstuffs that were prepared in them. To provide a more detailed understanding of earth oven cooking in the archaeological record, we analyze the archaeobotanical contents, stratigraphy, and morphology of a cooking pit recently excavated at C. W. Cooper, an early Mississippian (a.d. 1150–1200) site in west-central Illinois in order to contribute to research on late Prehistoric foodways. Filled with nearly 100 ears of maize, this earth oven presents the opportunity to document the process of undertaking a maize roast. The volume of maize and its presence within a dense concentration of cooking, processing, and storage facilities allows us to consider the communal nature of outdoor earth oven cooking in the 12th century Central Illinois Valley and the socioeconomic dimensions of commensal politics more broadly during the Precolumbian era.     

Shades of blue – cobalt-copper coloured blue glass from New Kingdom Egypt and the Mycenaean world: a matter of production or colourant source?

Cobalt blue glass has long now been recognised as characterised by a distinct compositional signature within the typical compositional range of Late Bronze Age glass. More recently, a copper-rich variation of cobalt blue glass has been seen throughout Egypt and the Mycenaean world. This paper discusses and defines this glass type based on trace elemental data, examines whether this lighter-shaded cobalt blue glass is a natural or an anthropogenic variant of cobalt blue glass, and identifies its likely production in Egypt. It investigates the role of this type of glass, particularly with regard to the distribution pattern and the significance of its prevalence in the Mycenaean mainland and the Aegean.     

Potash - a key raw material of glass batch for Bohemian glasses from 14th-17th centuries?

The aim of this work is to verify or refute hypothesis of existence of basic/universal glass batch: quartz sand: potash: limestone, at a ratio of 2: 1: 1 used in Bohemian glass production since the middle ages onwards and to simulate the preparation of a potassium glass type with the composition used in medieval Bohemia. The chemical composition of Bohemian glass, which incorporated in the proposed glass batch for glassmaking on a laboratory scale, was evaluated by (a) findings directly related to glassmaking (samples from glasswork in Moldava dating back to the 15th century) and (b) information from publications.Experimentally produced glasses for the present paper were prepared from raw materials such as ash, leached ash, potash, limestone and quartz sand. The plant raw materials (spruce, beech and bracken ashes, raw and refined potash) were treated and prepared by methods similar to the production procedures used in the pre-industrial era.The main contrast was found in the CaO/K₂O weight ratio, which was determined in glasses that were characteristic of given periods. While this ratio was often below 1 in glasses of the 15th century, it reached values above 1 in glasses at the turn of the 16th-17th centuries. This result may indicate that the composition of the glass batch had changed.The results of the present study reject the current scholarly work dealing with glass batch composition during the 14th-17th centuries and confirm that glass produced in some Bohemian medieval glassworks could have been melted from a batch that included plant ash, making the use of limestone unnecessary. The traditional suggestion of the exact ratios of raw materials, often cited in historical literature, seems to be impossible. The glassmakers had to react to the variable composition of the raw materials, especially plant ash.     

郑州市董寨遗址发掘简报

董寨村位于郑州市西北部 ,陇海铁路以北 ,桐柏路以西。在 2 0世纪 50年代 ,这里曾发现有西周时期的陶窑和房基① 。现在这里已为城区。 2 0 0 0年初 ,在配合郑州市中原区董寨村委会住宅楼工程中 ,于董寨村西北、郑州工程机械厂东南墙外 1 0 0米处 ,(图一 )发现西周时期灰坑 3个 ,编号0 0ＺＤＨ1—Ｈ3,出土一批陶器。现将发掘情况简报如下。图一　郑州市董寨遗址位置图 (1∶4 810 0 )一、遗　迹仅有灰坑 3个。由于地表被扰严重 ,Ｈ2、Ｈ3仅存灰坑底部。灰坑形制分为圆形(Ｈ2、Ｈ3)、长方形 (Ｈ1 )两种。Ｈ2 ,圆形 ,圜底 ,口径 3 5米 ,深 2米…