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This article presents an overview of the Hemerdon China Clay Works, 6 miles north-east of Plymouth (Devon), active from c.1860 to 1942. Based on research commissioned in advance of an extension to Headon West Quarry, it describes the development of the clay works and the methods of clay extraction and processing. Archaeological survey recorded a broad range of structures, features, earthworks and artefacts. They included the remains of an engine house of c.1907, two large masonry bases (probably associated with the flat rod system that transferred power from the engine) and a rocker beam. The article also describes a group of mica drags and settling tanks built c.1907. Combining this evidence with that gleaned from documentary sources, notably the large-scale Ordnance Survey mapping, an exceptionally detailed narrative has been constructed of the work's development through time. It has a relevance beyond the particular, and will help the future interpretation and management of the china clay extraction sites that are so characteristic of the region.  相似文献   
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The Capetian apanages have traditionally been studied from the perspective of the developing national monarchy. This approach is anachronistic; its premises are drawn from a later century, and even within the Capetian period it groups together with little differentiation the attitudes and intentions of five generations of kings.The context for the early Capetian apanages is the successional customs of the nobility, which the kings knew well from having seen them practised by their baronial neighbors. The determining concepts behind these measures were not those of the crown and the royal domain, but rather the societal ones by which, through the succession, the individual members of the family were ordered in relation to the family's lands.Only in the last quarter of the thirteenth and the first quarter of the fourteenth centuries did the kings and the Parlement impose the series of rulings which molded Capetian practice into a distinctively royal pattern. For most of the period under consideration, the territorial kingdom was treated as an aggregate of separable holdings, most of which were the private inheritance of the ruling family.  相似文献   
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