The Date of the Plano-Convex Flint-Knife in England and Wales

1932 ◽  
Vol 12 (2) ◽  
pp. 158-162 ◽  
Author(s):  
J. Grahame D. Clark

The type here discussed is a common feature of most collections of surface flints from this country, but little serious study has been devoted to it ; and though it has frequently been found in datable associations, no one seems to have attached it to any particular culture. Collectors in East Anglia have long called specimens of the type ‘slugs ’, a term unfortunately employed in other areas, for instance Sussex, to describe flint fabricators. In view of this confusion the author suggests the use of the term ‘plano-convex-knife ’ which accurately describes the section of the implement. The type is characterized by pressure or scale flaking on the slightly convex upper face, the under surface retaining the flake surface, usually with the bulb and sometimes with the striking platform intact. As a general rule the flake from which the knife is made shows a distinct curve in its longitudinal axis. As a result of the fine pressure technique employed, the convex surface of the implement commonly gives a glossy or soapy feel to the touch. In the finer and more typical specimens the whole of this upper surface shows the characteristic secondary flaking, though in some cases the central area of the flake is allowed to retain its primary character. In plan the commonest form is elongated oval of varying width (nos. 1 and 2), which is in a few examples (e.g. one from Bishop's Burton, barr. CCLV) serrated round the entire edge save for the buttend. The point is normally obtuse, if not rounded, and in a few cases (no. 3) is trimmed to a scraping edge. Finally we have to note rather a distinct variety with a straight chisel-like extremity (no. 4) from which flakes have been removed in the main line of the implement. This particular specimen has lateral notches as though for hafting.

Author(s):  
Richard Glover

This chapter is divided into two parts. The first part discusses the law on witness competence and compatibility. The general rule of law in England and Wales is that all witnesses, including children, are competent (able to give evidence) and witnesses are also compellable (liable to be required to give evidence subject to sanction for contempt). Particular rules apply to children and persons under disability, the accused in a criminal case, and spouses and civil partners. The second part deals with oaths and affirmations, covering the requirement of sworn evidence; the effect of oaths and affirmations; and exceptions to the requirement of sworn evidence.


2020 ◽  
Vol 187 (7) ◽  
pp. e47-e47
Author(s):  
Jo Hardstaff ◽  
Hannah Hunt ◽  
Laura Tugwell ◽  
Carole Thomas ◽  
Laila Elattar ◽  
...  

BackgroundBovine viral diarrhoea (BVD) is a production disease commonly found in British cattle herds. Species other than cattle have been shown to be infected with the virus, thereby providing a potential source of infection for livestock. This study surveyed serum samples taken from 596 culled wild deer from England and Wales, between 2009 and 2010, for the presence of BVD antibodies.Methods596 samples were tested with the SVANOVIR BVDV p80-Ab ELISA and a subset of 64 were tested with the IDEXX BVDV p80-Ab ELISA. ELISA results were confirmed using serum neutralisation tests.Results2/596 samples (0.35 per cent) tested positive for BVD antibodies using the Svanova test and one of these tested positive and the other inconclusive using the IDEXX test; both were confirmed positive with serum neutralisation tests. These were both red deer stags, one from Devon and the other from East Anglia.ConclusionsThe results indicate that it is unlikely that BVD virus is widely circulating within the wild deer population and particularly unlikely that persistently infected deer are present in the populations surveyed. These results suggest that wild deer are unlikely to be a significant reservoir of BVD infection in cattle.


2003 ◽  
Vol 140 (6) ◽  
pp. 627-647 ◽  
Author(s):  
N. J. SOPER ◽  
N. H. WOODCOCK

Illite crystallinity data from the Silurian slate belts of England and Wales indicate anchizone to low epizone metamorphism during the Acadian deformation in late Early Devonian time. This metamorphic grade implies a substantial overburden, now eroded, of Lower Devonian non-marine sediments of the Old Red Sandstone (ORS) magnafacies. A minimum 3.5 km pre-tectonic thickness of ‘lost’ ORS is estimated in the southern Lake District and comparable thicknesses in North Wales and East Anglia. Tectonically driven subsidence of the underlying Avalonian crust is required to accommodate such thicknesses of non-marine sediment. One proposed mechanism is flexure of the Avalonian footwall during convergence that continued from Iapetus closure in the Silurian until Acadian cleavage formation in the Emsian. The evidence for this model in the critical area of northwest England is reviewed and found to be unconvincing. An alternative model is developed following a recent suggestion that the Early Devonian was a period not of continued convergence but of orogen-wide sinistral transtension. Transtensional accommodation of the lost ORS is evidenced by Early Devonian extensional faults, by synchronous lamprophyric magmatism, and by compatibility with previously diagnosed sediment provenance patterns. A summary of Siluro-Devonian tectonostratigraphy for Britain south of the Highland Border emphasizes that, unlike the Scottish Highlands, this area was not affected by the Scandian Orogeny, but was by the Acadian. An important period of sinistral transtension in the Early Devonian (c.420–400 Ma) was common to both regions. This was a time of high heat flow, lamprophyric and more evolved magmatism, and major southward sediment transport, involving mainly recycled metamorphic detritus from the Highlands and from contemporaneous volcanicity. Old Red Sandstone, deposited in coalescing transtensional basins over much of Britain from the Midland Valley to the Welsh Borders, was largely removed and recycled southward during Acadian inversion.


The Geologist ◽  
1858 ◽  
Vol 1 (4) ◽  
pp. 138-142
Author(s):  
John Morris

The Palæozoic System comprises the earliest fossil-bearing strata. These have collectively a great thickness, and are of various mineral characters, being argillaceous, arenaceous, and calcareous, generally indurated, and occasionally metamorphosed.As a general rule, these strata appear in the western and north-western districts of Britain, and, to a considerable extent, in the mari-time districts of Ireland. The rocks of this system contain the chief metaliferous workings, as in Cornwall, North Wales, Cumberland, Scotland, &c. The upper portion, namely, the Carboniferous, affords the chief source of our lead-ores which occur in the limestone of Derbyshire, Flintshire, and Cumberland; and the associated shales and sandstones, forming the Coal-Measures, contain the well-known extensive deposits of fossil fuel and iron-ore.The palæozoic strata are numerous enough and sufficiently distinct among themselves to form several series. The first or lower of these comprises the Cambrian and Silurian; the middle is the Devonian; and the uppermost includes the Carboniferous and Permian.The lower portion of the palæozoic system has two great groups of rocks; the lower one is named Cambrian by the Rev. Professor Sedgwick,—from its great extent in Wales;—the other is called Silurian by Sir Roderick Murchison, on account of the typical strata of this group having been worked out by him in the country once inhabited by the Silures,—the border-counties of England and Wales, where the group is extensively developed.


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