Information Processing and Policy Dynamics

In this article, we trace the evolution of punctuated equilibrium theories of the policy process to the development of a full theory of government information processing. Noting that punctuated equilibrium is one realization of a larger theory of government information processing, we outline a research agenda for the study of agenda setting, policy dynamics, and information flows in the policy process. In doing so, we relate the study of government information processing to such important features of American government as inter-institutional dynamics and delegation in the policy process.     

The origins of two purportedly pre-Columbian Mexican crystal skulls

The well-known life-size rock crystal skull in the British Museum was purchased in 1897 as an example of genuine pre-Columbian workmanship, but its authenticity has been the subject of increasing speculation since the 1930s. This paper is concerned with the history, technology and material of the skull and another larger white quartz skull, donated recently to the Smithsonian Institution. Manufacturing techniques were investigated, using scanning electron microscopy to examine tool marks on the artefacts, and compared with Mesoamerican material from secure contexts. A Mixtec rock crystal goblet and a group of Aztec/Mixtec rock crystal beads show no evidence of lapidary wheels. They were probably worked with stone and wood tools charged with abrasives, some of which may have been as hard as corundum. Textual evidence for Mexican lapidary techniques during the early colonial period, supported by limited archaeological evidence, also indicates a technology without the wheel, probably based on natural tool materials. In contrast, the two skulls under consideration were carved with rotary wheels. The British Museum skull was worked with hard abrasives such as corundum or diamond, whereas X-ray diffraction revealed traces of carborundum (SiC), a hard modern synthetic abrasive, on the Smithsonian skull. Investigation of fluid and solid inclusions in the quartz of the British Museum skull, using microscopy and Raman spectroscopy, shows that the material formed in a mesothermal metamorphic environment equivalent to greenschist facies. This suggests that the quartz was obtained from Brazil or Madagascar, areas far outside pre-Columbian trade networks. Recent archival research revealed that the British Museum skull was rejected as a modern artefact by the Museo Nacional de Mexico in 1885, when offered for sale by the collector and dealer, Eugène Boban. These findings led to the conclusion that the British Museum skull was worked in Europe during the nineteenth century. The Smithsonian Institution skull was probably manufactured shortly before it was bought in Mexico City in 1960; large blocks of white quartz would have been available from deposits in Mexico and the USA.     

An analytical study, using inductively coupled plasma (ICP) spectrometry, of samian and colour-coated wares from the Roman town at Colchester together with related continental samian wares

Over 200 sherds of samian and colour-coated pottery of late 2nd or early 3rd century date have been analysed by inductively coupled plasma (ICP) emission spectrometry. Most of this material was excavated at Colchester, England; the remainder is related East Gaulish material. Some clay samples were also analysed. The material divides, after multivariate statistical analysis, into 11 clusters. These accord well with known archaeological evidence and suggest assignments of origin where these are uncertain. In particular, the archaeological evidence for a link between Colchester and the Sinzig potters is supported.     

Towards a Socialised Archaeology of Ceramics in Great Lakes Africa

This paper presents results of recent research in Kenya and Uganda on ceramics from the first and early to mid second millennia ad. Whereas previous research has tended to emphasise the role of ceramics as chronological tools, or as an index of past ethno-linguistic identity, this paper will emphasise the role of ceramics as functioning tools. Combining archive and published data with new results from fieldwork, the evidence presented here demonstrates continuity of settlement in the Victoria Nyanza region between first millennium Urewe users and second millennium Transitional Urewe and Entebbe ceramics, and the emergence of specialist lacustrine communities. The changing nature of ceramics over this time span is compared with evidence from historical linguistics to suggest a shift in social authority from the family home to the wider community in the second millennium, and the growing influence of economic wealth or individual leadership.     

Scholarly Publication and WAC: The Need for a Critical Response

This paper is a response to recent critiques of the World Archaeological Congress (WAC), including its Global Libraries Program. WAC should take greater leadership in addressing the current unequal state of international scholarly publication. Scholars from the global south disproportionately have more difficulty obtaining published works and fewer venues to publish their own research. This paper calls WAC to encourage and support local and non-English publications, open access works and journals, commons-based licensing, and e-repositories.