The 'Mardi Gras' Shipwreck: Results of a Deep-Water Excavation, Gulf of Mexico, USA

The 'Mardi Gras' Shipwreck is the remains of an early-19th-century sailing vessel lost in approximately 1220 m of water in the Gulf of Mexico. A recent archaeological investigation documented the wreck and recovered several artefacts, including glassware, ceramics, navigational instruments, a cannon, and a stove. Analyses of these artefacts and the surviving hull have led to preliminary conclusions on the nature of the vessel and its crew.
© 2009 The Authors     

Iron Age hydraulic plaster from Tell es-Safi/Gath,Israel

Hydraulic plasters or mortars prior to the Roman period are rare. Here, we report the identification and characterization of 3000 year old (Iron Age) hydraulic plaster surfaces from the site of Tell es-Safi/Gath. This site, located in central Israel, was occupied almost continuously from prehistoric through modern times, and is identified as the Canaanite and Philistine city of Gath. A survey using an on-site Fourier transform infrared spectrometer (FTIR) identified the presence of amorphous silicates, in addition to calcite, in each of two superimposed plaster layers. This suite of minerals is characteristic of hydraulic plaster. An in-depth characterization of the plasters using FTIR, acid dissolution, X-ray fluorescence (XRF), X-ray powder diffractometry (pXRD), heating experiments and scanning electron microscopy (SEM) coupled with energy dispersive spectroscopy (SEM–EDS), shows that special silicate-containing minerals were brought from some distance to the site in order to produce these plaster surfaces. We therefore conclude that the plasters were deliberately produced, and were not the result of a fortuitous addition of local silicate minerals. A layer of around 150 μm thick enriched in carbonate hydroxylapatite was found in both plaster surfaces, and the same mineral was identified by infrared spectrometry in the surrounding sediments. This suggests that organic materials were used on these surfaces. These surfaces are among the oldest hydraulic plasters known.     

Bureaucratic Domination of Hunter-Gatherer Societies: A Study of the San in Botswana

Social science analysis of hunter-gatherer societies has highlighted their economic and cultural subordination to neighbouring peoples. This article shows that, at least in the case of the San in Botswana, state bureaucratic domination is becoming the determining factor in social change. The authors provide evidence of bureaucratic domination with respect to settlement of the San, the establishment of headmanship, extension of social services and environmental legislation. In this new environment, hunter-gatherer self-determination requires the creation of effective political organizations to counter the bureaucratic state. Some San groups in Botswana are already reacting to the expanding presence of the state by dramatically increasing their involvement in various aspects of Botswana's electoral politics. While the outcome of the San political challenge to the state is still in doubt, the authors conclude that San settlement is a precondition for political change in spite of the serious cultural sacrifice involved.     

The Houston Advanced Research Center (HARC): A Private Initiative for Industrial Development

The private sector can create unique institutions that help to achieve industrial and economic goals. To demonstrate this growth model, the Houston Advanced Research Centre (HARC) was created as a private non-profit organization, part of a new town development north of Houston, Texas. Over its 17-year history, HARC has successfully linked university, industry and governmental research in this framework. During this time, four strategies have been tested: large or sensitive R&D projects, strong links with member universities, efforts to bring technology to the marketplace, and policy analysis and advice. Of these, the latter three are today's successes as HARC has become a more responsive, service-oriented organization. Also, sustainable development has emerged as a unifying theme, reflecting part of the organization's initial legacy from its founder, George P. Mitchell. The Woodlands has grown around HARC as a place to live for over 50,000 people, a growing job base, and realization of the initial "research forest" concept with more than 100 firms and 4,500 employees.