THE ORIGIN,DESTRUCTION AND RESTORATION OF COLOUR IN EGYPTIAN TRAVERTINE*

Travertine was one of ancient Egypt's most popular ornamental stones. Upon prolonged exposure to sunlight, the rock's translucent brownish calcite is bleached to nearly white. Ultraviolet and gamma irradiation experiments were undertaken to investigate the source of the brownish colour and the process by which it fades. It was found that the coloration results from the activation of colour centres by natural radioactivity within the rock, and that these colour centres are deactivated by the ultraviolet component of sunlight. The results also demonstrate that the original brownish colour of sun‐bleached, travertine objects can be restored by artificial gamma irradiation.     

Pangs of nascent nationalism from the nationless state? Euro coins and undocumented migrants in Malta since 2004†

ABSTRACT. This paper examines recent manifestations of the emergence of national identity amongst the citizens of Malta, now the smallest member state of the European Union. In this search, discrete events and ‘things’ are examined as symbolic paraphernalia, empirical phenomena that provide insights to overarching narratives about identity, nationalism and integration. The discussion and eventual decision on the choice of euro coin faces in Malta is proposed as one that illustrates a process of ‘nascent nationalism’. Meanwhile, the arrival of boatloads of undocumented migrants on Malta's shores has also encouraged the evolution of a secular, national character in Malta. Such episodes, and others, ultimately reflect a need for symbols of national unity that remain largely absent in this ‘nationless state’ which continues to be gripped by a bipolar partisanship that spares almost no one.     

Fixed links and the engagement of islandness: reviewing the impact of the Confederation Bridge

Islands are the challenging targets of a global pursuit in the closing of gaps, their distinct geography so far having seemingly eluded and mocked both human ingenuity and terra firma. This article seeks to deconstruct the concept of the bridge as more than just a value-free symbol of inexorable technological progress, and uses islands as the reference point to flesh out such an argument. Bridges impact on the subtle balance between the characteristic 'local–global' nature of an island identity; such an impact is multi-faceted, complex and case-specific. These ideas are applied to the specific case of the Confederation Bridge, the 14-km structure linking Prince Edward Island to New Brunswick, and which celebrated its tenth anniversary in June 2007.