Salvage excavations on the verges of the A344 at Stonehenge resulted in the recovery of large, well stratified groups of prehistoric artefacts. In 1968, a complete section across the Avenue earthwork was recorded, and material obtained for a radiocarbon determination. In 1979 and 1980, the two ditches of the Avenue were again sectioned. Detailed recording of find provenances from both these and the Heelstone ditches permitted a fuller understanding of the erosion and filling processes. In 1979, part of a pit that had held a previously unknown standing stone was excavated. A geophysical survey of the Avenue suggests that further pits may be present along its course. A unique deposit of prehistoric stoneworking debitage was sectioned in 1980. It is suggested that this debitage, representing the opportunistic use of megalith shaping debris, accumulated within a structure inhabited at the time the major stone monument was being erected. The discovery of these rock fragments has prompted an important new study of the petrology at Stonehenge, and a discussion of stoneworking around the site is included. The paper concludes with an appraisal of the chronology of Stonehenge and an introduction to the comprehensive excavation archive.
Excavated sites referable to the earlier first millennium B.C. are rare in the south-west peninsula. Although Dartmoor and Bodmin Moor exhibit well preserved Bronze Age landscapes, most of the upland settlements are attributed to the second millennium and there are few which on present evidence fall within the succeeding centuries (Silvester 1979). Beyond the granite moors, pottery from Kent's Cavern, Torquay and the Mount Batten peninsula, near Plymouth, suggest sporadic occupation, while radiocarbon dates from Killibury in Cornwall imply activity prior to the construction of the hillfort (Miles 1977, 111). Yet such is the imbalance of archaeological activity in the region that even in well worked areas such as west Cornwall, few sites of relevant date can be readily identified. In Devon, other than on Dartmoor and Exmoor, the limestone plateaux around Torbay provide the only surface evidence of open settlements. A small proportion of the modern fields and woods on the limestone preserve groups of clearance cairns and rubble banks of varying complexity; many of these are undoubtedly medieval in date, but in two locations at Dainton, also known as Miltor Mator Common (SX 859668), and Walls Hill, Torquay (SX 935651), there are the unobtrusive remains of rectangular field systems. The former consisted of a minimum of perhaps ten fields, averaging just over 0·4 ha. in area, and randomly spaced cairns, most of which are presumably contemporary (fig. 1). Part of Walls Hill is covered by dense ashwood scrub, a recurring feature of the limestone plateaux, but on the cliff top are the vestiges of nine fields which are generally of smaller size than those at Dainton. That these sites survive is fortuitous but perhaps not surprising; the soil on the plateau is well-drained but normally less than 0·3 m in depth (Clayden, 1971, 122). Loose rock occurs frequently and occasional outcrops add to the problems of agricultural use. Consequently the limestone hills tend to be given over to permanent pasture and are ploughed only rarely.
Restless legs syndrome (RLS) is a common pediatric condition that often goes undiagnosed. The genetics and pathophysiology of this sensorimotor condition are still not well understood. RLS can affect any part of the body, but the thighs and calves are the most commonly affected. Because of unpleasant sensations caused by RLS, these patients experience sleep disturbance and its consequences. The diagnosis of RLS is a clinical one. RLS occurs at a higher frequency and the symptoms are more severe in patients with iron deficiency; therefore, correcting iron deficiency improves the symptoms. Both pharmacologic and nonpharmacologic interventions can be effective in the treatment of children with RLS. However, in contrast to adults with RLS, most children with RLS are not treated with pharmacologic agents because the symptoms are not as severe as they are in adults. [ Pediatr Ann . 2018;47(12):e504–e506.]
Page 90 THE EXCAVATIONS 92 EARLIER PREHISTORIC ACTIVITY 104 THE IRON AGE SETTLEMENT 104 LATE IRON AGE AND ROMANO-BRITISH SETTLEMENT 117 MEDIEVAL AND LATER ACTIVITY 124 THE FINDS 124 APPENDIX: INDEX TO MICROFICHE 133 The report on partial rescue excavations of the Collfryn enclosure between 1980-81 presents a summary of the first large-scale investigation of one of the numerous semi-defensive cropmark and earthwork enclosure sites in the upper Severn valley in mid-Wales. Earlier prehistoric activity of an ephemeral nature is represented by a scattering of Mesolithic and Late Neolithic or early Bronze Age flintwork, and by a pit containing sherds of several different Beaker vessels. The first enclosed settlement, constructed in about the 3rd century be probably consisted of three widely-spaced concentric ditches, associated with banks of simple dump construction, having a single gated entranceway on the downhill side. It covered an area of about 2.5 ha and appears to have been of a relatively high social status, and appropriate in size for a single extended-family group. This was subsequently reduced in about the ist century be to a double-ditched enclosure, by the recutting of the original inner ditch and the cutting of a new ditch immediately outside it. The habitation area between the 3 rd and ist centuries be probably focused on timber buildings in the central enclosure of about 0.4 ha, whose gradually evolving pattern appears to have comprised between 3-4 roundhouses and 4-5 four-posters at any one time. Little excavation was undertaken between the outer ditches of the first phase settlement, but these are assumed to have been used as stock enclosures. A mixed 1 The Clwyd-Powys Archaeological Trust, 7a Church Street, Welshpool, Powys, SYii 7DL 89 THE PREHISTORIC SOCIETY farming economy is suggested by cattle, sheep/goat and pig remains, and remains of glume wheats, barley and oats. Industries included small-scale iron and bronze-working. The Iron Age settlement was essentially aceramic, although there are significant quantities of a coarse, oxidized ceramic probably representing salt traded from production centres in the Cheshire Plain. The entranceway was remodelled in about the late ist or early 2nd, century AD by means of a timber-lined passage linked to a new gate on the line of the inner bank. There is equivocal evidence of continued occupation within the inner enclosure continuing until at least the mid-^th century AD, possibly at a comparatively low social level, associated with domestic structures of uncertain form sited on earlier roundhouse platforms, and including some four-posters and possible six-posters. Drainage ditches were dug across parts of the site during the Medieval and post-Medieval periods, which were associated with various structures, including a corn-drying kiln inserted into the inner enclosure bank in the 15th century.
Vibrations in laboratories always cause great annoyance, a n d frequently either prevent the employment of sensitive instruments altogether or necessitate the installation of elaborate and mechanically unstable suspensions.T h e purpose of this study was t o work out a method €or determining the relative value of different devices and materials in absorbing vibration. A review of the available literature showed t h a t very little had been published on vibration in buildings. Some very careful and valuable work has been done by Prof. E. E. Hall,% of the University of California, in buildings in San Francisco and Berkeley.L 1 FIG. 1-SIMPLE PENDULUM FOR RECORDING HORIZONTAL VIBKATIONS Deutsch3 has done work in New York City, and a few descriptions of instruments for measuring vibration have appeared in t h e engineering magazines. With few exceptions the instruments which have been described for the measurement of vibration are constructed on the principle of the seismograph.s A pendulum of some type constitutes the fixed mass in the measurement of the horizontal component of the vibration a n d a weighted helical spring in t h e measurement of the vertical. T h e apparatus which was used for obtaining records of horizontal vibration is shown in Fig. I . It con-' sisted of a simple pendulum weighing about 2 5 lbs., and having a period of vibration of approximately one second. A very light aluminium recording needle was connected t o this pendulum in such a way as t o give about a 20-fold magnification on t h e record sheet. For vertical vibration we used t h e apparatus shown in Fig. 2, consisting of a helical steel spring, No. 14 wire, about three-fourths inch in diameter and 1 2 in. long when unstretched, and loaded with a lead bob weighing about 3 lbs. T h e bob was constrained t o movement in one vertical plane by knife edges. Vertical motion relative t o the bob was transformed into horizontal by a system of very light aluminium levers
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.
hi@scite.ai
10624 S. Eastern Ave., Ste. A-614
Henderson, NV 89052, USA
Copyright © 2024 scite LLC. All rights reserved.
Made with 💙 for researchers
Part of the Research Solutions Family.