Use of vegetative remains in the identification of dyeplants from waterlogged 9th–10th century AD deposits at York

Vegetative remains of four dyeplants (Rubia tinctorum L., Genista tinctoria L., Diphasium complanatum (L.) Rothm. and Isatis tinctoria L.) found in 9th–10th century deposits at York, are described in detail. A fifth species (Reseda luteola L.), so far only found as seeds, is also described.     

Charcoal reflectance measurements: implications for structural characterization and assessment of diagenetic alteration

Charcoal is a valuable source of archaeological and palaeoenvironmental proxy data. However growing evidence suggests that production conditions can strongly influence post-depositional alteration of charcoal. Consequently, both reconstruction of production temperature and understanding of the potential for diagenetic alteration are of great interest. Here, we use mean random reflectance (Ro_mean) in conjunction with other chemical characterization methods to address these questions. Ro_mean was obtained for a suite of modern analogue charcoal, produced under controlled conditions, and for a series of natural charcoal samples, obtained from archaeological and palaeoenvironmental deposits. Ro_mean proves to be a robust measure to assess formation temperature for samples produced at 400 °C and above, even after exposure to highly oxidizing conditions. Ro_mean is also useful for samples formed between 300 °C and 400 °C. However, if an assemblage of charcoals has been exposed to oxidizing conditions, lower temperature charcoals may be preferentially lost. It is apparent that charcoal produced at lower temperatures is more highly susceptible to chemical oxidation, and that there is a continuum in charcoal degradation potential, dependant upon fuel material and production conditions.     

Escape into the City: Everyday Practices of Commoning and the Production of Urban Space in Dublin

In Dublin there are many needs and desires which are not met, or excluded, by the pattern of high rent, the commodification of social/cultural life, and the regulation of public space. Against this dynamic, Dublin has seen a number of experiments in urban commoning: people collectively finding ways of opening up space in order to do what they want. This might be as simple as wanting a space to work, to make food or to show films. Rather than trying to change this situation by appealing to existing institutions, these new urban commons are characterized by particular groups of people devising practical ways of escaping the forms of “enclosure” which limit what can happen in the city. This article takes a “militant research” approach to explore the potentials and limitations of these experiments in urban production and organization.     

Alkali extraction of archaeological and geological charcoal: evidence for diagenetic degradation and formation of humic acids

Charcoal forms a crucial source of archaeological and palaeoenvironmental data, providing a record of cultural activities, past climatic conditions and a means of chronological control via radiocarbon (¹⁴C) dating. Key to this is the perceived resistance of charcoal to post-depositional alteration, however recent research has highlighted the possibility for alteration and degradation of charcoal in the environment. An important aspect of such diagenesis is the potential for addition of exogenous “humic acids’ (HAs), to affect the accuracy of archaeological and palaeoenvironmental reconstructions based upon chemical analyses of HA-containing charcoal. However the release of significant quantities of HA from apparently pristine charcoals raises the question whether some HA could be derived via diagenetic alteration of charcoal itself. Here we address this question through comparison of freshly produced charcoal with samples from archaeological and geological sites exposed to environmental conditions for millennia using elemental (C/H/O) and isotopic (δ¹³C) measurements, Fourier Transform Infrared Spectroscopy (FTIR) and proton Liquid-State Nuclear Magnetic Resonance (¹H NMR). The results of analyses show that the presence of highly carboxylated and aromatic alkali-extractable HA in charcoal from depositional environments can often be attributable to the effects of post-depositional processes, and that these substances can represent the products of post-depositional diagenetic alteration in charcoal.     

Love & loss in the 1960s

Roland Barthes observed that though there is a ‘lover's discourse’ shared by all those who are in love, it is a discourse ignored or disparaged by ‘surrounding languages’. Concerned that the discourse of heritage may participate in this closure against the ‘in love’ experience, I begin to explore ways the field of heritage studies might start speaking this language. Specifically, I ponder the ways that a young Chinese woman in the film Days of being wild, following the breakup of a love affair, becomes locked in a landscape of lost love that is populated with objects sticky with affect, objects which although they transmit painful affects nevertheless bind her by a dynamic that Lauren Berlant terms ‘cruel optimism’. I then turn to imagine the way a Balinese house compound gateway might, in a similar way, have become impregnated with affects relating to victims of the 1965–1966 killings in Bali and how, for those left behind, it might assume the ability to ‘presence’ a lost one. Archaeology and heritage studies have great potential to foster empathy with the experience of past others, but this calls for a sophisticated understanding of how objects become imbued with affect and how they transmit it.     

New record of Warendja wakefieldi (Vombatidae; Marsupialia) from Wombeyan Caves,New South Wales

Transverse sections of Chirodipterus australis and Griphognathus whitei are used to demonstrate the histological structures of the rostral and symphysial tubuli in Devonian lungfish. The walls of the tubuli are composed of bony tissue indistinguishable from the cancellar bone found in dermal bone. It has many spaces and perforations, and is contiguous in places with the cancellar bone of the external dermal bone. The walls of lateral-line canals have the same histological structure as the walls of the tubuli; they also intercommunicate with them. The tubuli and the lateral-line canals open to the surface through large perforations on the external surface. In Griphognathus the walls of the tubes under the external dermal bone have two layers: the outer one is dense bone, but the inner one has the appearance of calcified fibrous connective tissue of the kind associated with the tissue surrounding the lateral-line canals in living lungfish. The tubuli are closely related to the pore-canal system via canals that penetrate the dermal bone; this same relationship has been observed in Dipnorhynchus and Speonesydrion. The intimate connection between the tubuli and the lateral-line system suggests that they were formed by the sinking of neuromasts into and under the external dermal bone, with their walls surrounded by cancellar bone.     

House of Lords Committee Accommodation and Its Use: Restoration and Renewal in the 19th and 20th Centuries*

Following the 1834 fire, the work of house of lords committees continued virtually without interruption, at first in temporary accommodation and, from 1846, in rooms in the new palace designed by Charles Barry. This article charts the history of house of lords committee activity and the varied use of its accommodation at Westminster from 1834 to the present. Major committee work immediately following the fire included an inquiry into prison reform. Barry's accommodation was scantily fitted out, and quickly needed technical and other adaptations. Committees themselves changed too, with the heaviest phase of private bill activity needed for the creation of the railways tailing off by the late 1860s. Following a low point in committee activity between 1940 and 1970 committee work has developed in fits and starts from 1971 onwards. The further expansion of committees following the Jellicoe committee report of 1992 was accommodated by the reform of private bill procedure, which helped free up committee rooms, and in October 2009, the establishment of the Supreme Court meant that the law lords no longer sat judicially in the large committee rooms 1 and 2. Since 2012, however, the further expansion of committee activity has not been matched by an increase in its accommodation.